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\n\n \n \n 2023\n \n \n (5)\n \n \n
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\n \n \n\n \n \n \n \n \n Experimental demonstration of a metro area network with terabit-capable sliceable bit-rate-variable transceivers using directly modulated VCSELs and coherent detection.\n \n \n \n\n\n \n Fabrega, J.; Vílchez, F.; Svaluto Moreolo, M.; Martínez, R.; Quispe, A.; Nadal, L.; Casellas, R.; Vilalta, R.; Muñoz, R.; Neumeyr, C.; Lee, S.; Shin, J.; Jung, H.; Mariani, G.; Heuvelmans, R.; Gatto, A.; Parolari, P.; Boffi, P.; Tessema, N.; Calabretta, N.; Larrabeiti, D.; and Fernández-Palacios, J.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 15(3). 2023.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Experimental demonstration of a metro area network with terabit-capable sliceable bit-rate-variable transceivers using directly modulated VCSELs and coherent detection},\n type = {article},\n year = {2023},\n volume = {15},\n id = {5bbdae3f-59b7-3f79-964d-f351e3bf5477},\n created = {2023-05-29T11:52:26.394Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.394Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Disaggregation in optical networks is particularly relevant to be considered for the deployment of 5G services and towards the support of 6G. Particularly in the metro area network (MAN), this is especially crucial, as is the adoption of suitable photonic technologies enabling dense integration to design a sustainable network architecture. Furthermore, to dynamically allocate the ever-increasing traffic, supporting multiterabit capacity, an optimal usage of the available resources by properly exploiting the multiple dimensions (including the spectral and spatial ones), with programmable and adaptive data plane solutions, is key. In this work, we assess the capabilities of a disaggregated MAN that relies on new photonic devices, node architectures, and sliceable bandwidth/bit-rate-variable transceivers, approaching wavelength division multiplexing and space division multiplexing. A hierarchical network topology is attained and the feasibility of a cross-hierarchy optical continuum is demonstrated. In fact, we experimentally demonstrate the successful transmission of multiterabits/second capacity across multiple nodes corresponding to different hierarchy levels that have different implementation schemes and support different technologies. For the top tier hierarchy level nodes, we demonstrate the transmission of up to 8×11 = 88 spatial/spectral channels, for a total capacity of 1.676 Tb/s, employing a node architecture able to handle up to 2560 spatial/spectral channels at different aggregation levels and granularities.},\n bibtype = {article},\n author = {Fabrega, J.M. and Vílchez, F.J. and Svaluto Moreolo, M. and Martínez, R. and Quispe, A. and Nadal, L. and Casellas, R. and Vilalta, R. and Muñoz, R. and Neumeyr, C. and Lee, S.Y. and Shin, J.U. and Jung, H.D. and Mariani, G. and Heuvelmans, R. and Gatto, A. and Parolari, P. and Boffi, P. and Tessema, N.M. and Calabretta, N. and Larrabeiti, D. and Fernández-Palacios, J.P.},\n doi = {10.1364/JOCN.470434},\n journal = {Journal of Optical Communications and Networking},\n number = {3}\n}\n\n Disaggregation in optical networks is particularly relevant to be considered for the deployment of 5G services and towards the support of 6G. Particularly in the metro area network (MAN), this is especially crucial, as is the adoption of suitable photonic technologies enabling dense integration to design a sustainable network architecture. Furthermore, to dynamically allocate the ever-increasing traffic, supporting multiterabit capacity, an optimal usage of the available resources by properly exploiting the multiple dimensions (including the spectral and spatial ones), with programmable and adaptive data plane solutions, is key. In this work, we assess the capabilities of a disaggregated MAN that relies on new photonic devices, node architectures, and sliceable bandwidth/bit-rate-variable transceivers, approaching wavelength division multiplexing and space division multiplexing. A hierarchical network topology is attained and the feasibility of a cross-hierarchy optical continuum is demonstrated. In fact, we experimentally demonstrate the successful transmission of multiterabits/second capacity across multiple nodes corresponding to different hierarchy levels that have different implementation schemes and support different technologies. For the top tier hierarchy level nodes, we demonstrate the transmission of up to 8×11 = 88 spatial/spectral channels, for a total capacity of 1.676 Tb/s, employing a node architecture able to handle up to 2560 spatial/spectral channels at different aggregation levels and granularities.\n
\n\n\n\n \n\n \n \n \n \n \n Integration of the QKD Layer in Fibre Networks Using Multicore Fibres.\n \n \n \n\n\n \n Gagliano, A.; Gatto, A.; Martelli, P.; Boffi, P.; Hayashi, T.; Mecozzi, A.; Antonelli, C.; and Parolari, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2023-July, 2023. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Integration of the QKD Layer in Fibre Networks Using Multicore Fibres},\n type = {inproceedings},\n year = {2023},\n keywords = {multicore fibre,quantum key distribution,quantum network,quantum-classical coexistence},\n volume = {2023-July},\n id = {c6556bca-234f-3b6e-83bb-b2ffeb976a0d},\n created = {2023-10-18T09:55:52.210Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-10-18T09:55:52.210Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Uncoupled multicore fibres (MCFs) are a suitable solution for integrating the quantum communication systems in WDM networks. The performance of the QKD layer is in fact impaired by nonlinear effects generated by the classical channels. MCFs allow a smart management of classical and quantum key carriers coexistence, preserving the secret key rate generation thanks to a proper choice of the wavelength-core allocation plan.},\n bibtype = {inproceedings},\n author = {Gagliano, A. and Gatto, A. and Martelli, P. and Boffi, P. and Hayashi, T. and Mecozzi, A. and Antonelli, C. and Parolari, P.},\n doi = {10.1109/ICTON59386.2023.10207357},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n Uncoupled multicore fibres (MCFs) are a suitable solution for integrating the quantum communication systems in WDM networks. The performance of the QKD layer is in fact impaired by nonlinear effects generated by the classical channels. MCFs allow a smart management of classical and quantum key carriers coexistence, preserving the secret key rate generation thanks to a proper choice of the wavelength-core allocation plan.\n
\n\n\n\n \n\n \n \n \n \n \n Partial Parallelisation of MIMO Processing in Multi-Mode Fiber Transmission.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Luis, R.; Rademacher, G.; Puttnam, B.; Antonelli, C.; Martelli, P.; and Boffi, P.\n\n\n \n\n\n\n In LEOS Summer Topical Meeting, volume 2023-July, 2023. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Partial Parallelisation of MIMO Processing in Multi-Mode Fiber Transmission},\n type = {inproceedings},\n year = {2023},\n keywords = {MIMO,mode division multiplexing,mode group division multiplexing,multi-mode fiber},\n volume = {2023-July},\n id = {1d5e92c5-4341-3d3f-9c54-c11538a3e430},\n created = {2023-10-18T09:55:52.214Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-10-18T09:55:52.214Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We propose partial-MIMO mode group division multiplexing (MGDM) to parallelize MIMO processing of spatial division multiplexing in multi-mode fibers. The digital signal processing required to overcome inter-modal crosstalk, applying mode group-based MIMO, is significantly reduced with respect to a full-MIMO approach, while preserving transmission performance.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Luis, R.S. and Rademacher, G. and Puttnam, B.J. and Antonelli, C. and Martelli, P. and Boffi, P.},\n doi = {10.1109/SUM57928.2023.10224411},\n booktitle = {LEOS Summer Topical Meeting}\n}\n\n We propose partial-MIMO mode group division multiplexing (MGDM) to parallelize MIMO processing of spatial division multiplexing in multi-mode fibers. The digital signal processing required to overcome inter-modal crosstalk, applying mode group-based MIMO, is significantly reduced with respect to a full-MIMO approach, while preserving transmission performance.\n
\n\n\n\n \n\n \n \n \n \n \n Demonstration of Multi-Hop Mode-Group Routing in a Field-Deployed Multi-Mode Fiber Network.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Luis, R.; Rademacher, G.; Puttnam, B.; Emmerich, R.; Schubert, C.; Ferri, G.; Achten, F.; Sillard, P.; Martelli, P.; Di Sciullo, G.; Graziosi, F.; Marotta, A.; Mecozzi, A.; Antonelli, C.; and Boffi, P.\n\n\n \n\n\n\n In 2023 Optical Fiber Communications Conference and Exhibition, OFC 2023 - Proceedings, 2023. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n
\n\n\n@inproceedings{\n title = {Demonstration of Multi-Hop Mode-Group Routing in a Field-Deployed Multi-Mode Fiber Network},\n type = {inproceedings},\n year = {2023},\n id = {c3f32f79-16a8-3133-a5f7-898dbc91f6c6},\n created = {2023-10-18T09:55:52.283Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-10-18T09:55:52.283Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Space-division multiplexing can enhance node flexibility in urban networks by exploiting routing of weakly coupled mode groups. We demonstrate multi-hop Tb/s group routing in different switching scenarios in the deployed 15-mode fiber-ring in L'Aquila, Italy.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Luis, R.S. and Rademacher, G. and Puttnam, B.J. and Emmerich, R. and Schubert, C. and Ferri, G. and Achten, F. and Sillard, P. and Martelli, P. and Di Sciullo, G. and Graziosi, F. and Marotta, A. and Mecozzi, A. and Antonelli, C. and Boffi, P.},\n doi = {10.23919/OFC49934.2023.10116716},\n booktitle = {2023 Optical Fiber Communications Conference and Exhibition, OFC 2023 - Proceedings}\n}\n\n Space-division multiplexing can enhance node flexibility in urban networks by exploiting routing of weakly coupled mode groups. We demonstrate multi-hop Tb/s group routing in different switching scenarios in the deployed 15-mode fiber-ring in L'Aquila, Italy.\n
\n\n\n\n \n\n \n \n \n \n \n Partial MIMO-based Mode Division Multiplexing Transmission over the First Field-Deployed 15-Mode Fiber in Metro Scenario.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Luis, R.; Rademacher, G.; Puttnam, B.; Emmerich, R.; Schubert, C.; Ferri, G.; Achten, F.; Sillard, P.; Martelli, P.; Sciullo, G.; Graziosi, F.; Marotta, A.; Mecozzi, A.; Antonelli, C.; and Boffi, P.\n\n\n \n\n\n\n In 2023 Optical Fiber Communications Conference and Exhibition, OFC 2023 - Proceedings, 2023. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
\n\n\n\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Partial MIMO-based Mode Division Multiplexing Transmission over the First Field-Deployed 15-Mode Fiber in Metro Scenario},\n type = {inproceedings},\n year = {2023},\n id = {8d51a977-4b73-3c2c-8e08-df124dfa33db},\n created = {2023-10-18T09:55:52.325Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-10-18T09:55:52.325Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We assess mode division multiplexing transmission based on partial MIMO equalization over 6.1 km of the first deployed 15-mode fiber in L'Aquila, Italy. We demonstrate more than 13Tb/s throughput with reduced receiver DSP resources.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Luis, R.S. and Rademacher, G. and Puttnam, B.J. and Emmerich, R. and Schubert, C. and Ferri, G. and Achten, F. and Sillard, P. and Martelli, P. and Sciullo, G.D. and Graziosi, F. and Marotta, A. and Mecozzi, A. and Antonelli, C. and Boffi, P.},\n doi = {10.23919/OFC49934.2023.10116440},\n booktitle = {2023 Optical Fiber Communications Conference and Exhibition, OFC 2023 - Proceedings}\n}\n\n We assess mode division multiplexing transmission based on partial MIMO equalization over 6.1 km of the first deployed 15-mode fiber in L'Aquila, Italy. We demonstrate more than 13Tb/s throughput with reduced receiver DSP resources.\n
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\n\n \n \n 2022\n \n \n (7)\n \n \n
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\n \n \n\n \n \n \n \n \n Mode Group Division Multiplexing in 5 Mode-Group FMF Enabling MIMO-Free Solutions.\n \n \n \n\n\n \n Gatto, A.; Martelli, P.; Parolari, P.; Sambo, N.; Castoldi, P.; and Boffi, P.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 34(21). 2022.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
\n
\n\n\n@article{\n title = {Mode Group Division Multiplexing in 5 Mode-Group FMF Enabling MIMO-Free Solutions},\n type = {article},\n year = {2022},\n keywords = {Mode group division multiplexing,few-mode fiber,metropolitan-area network,provisioning,space division multiplexing},\n volume = {34},\n id = {03a7ab85-194e-39a3-bd41-499f152f6030},\n created = {2023-05-29T11:52:26.377Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.377Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We propose mode-group (MG) division multiplexing in a MIMO-free configuration to increase the capacity and the flexibility in reduced-complexity spatial division multiplexed metro networks. We take in account innovative few mode fibers (FMFs) supporting a large number of spatial modes, which allow to select suitable combinations of MGs providing limited crosstalk. Network provisioning in metro rings is investigated starting from experiments with up to 48-Tb/s capacity in a 5 MG FMF employing also a purposely developed quality of transmission tool.},\n bibtype = {article},\n author = {Gatto, A. and Martelli, P. and Parolari, P. and Sambo, N. and Castoldi, P. and Boffi, P.},\n doi = {10.1109/LPT.2022.3205409},\n journal = {IEEE Photonics Technology Letters},\n number = {21}\n}\n\n We propose mode-group (MG) division multiplexing in a MIMO-free configuration to increase the capacity and the flexibility in reduced-complexity spatial division multiplexed metro networks. We take in account innovative few mode fibers (FMFs) supporting a large number of spatial modes, which allow to select suitable combinations of MGs providing limited crosstalk. Network provisioning in metro rings is investigated starting from experiments with up to 48-Tb/s capacity in a 5 MG FMF employing also a purposely developed quality of transmission tool.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of SOA-Based Add-Drop Switch Nodes on High-Capacity Multicarrier Transmission for Metro-Access Networks.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Parolari, P.; Tessema, N.; Prifti, K.; Calabretta, N.; Neumeyr, C.; and Boffi, P.\n\n\n \n\n\n\n Journal of Lightwave Technology, 40(14). 2022.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Impact of SOA-Based Add-Drop Switch Nodes on High-Capacity Multicarrier Transmission for Metro-Access Networks},\n type = {article},\n year = {2022},\n keywords = {Discrete multitone modulation,metropolitan area networks,semiconductor optical amplifier},\n volume = {40},\n id = {265d9fc4-9ddf-388d-bba7-7a674022bc61},\n created = {2023-05-29T11:52:26.471Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.471Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Internet-generated traffic growth is forcing the development of new low-cost solutions in metropolitan area networks (MANs), in particular in the transceiver and network node architectures. Semiconductor optical amplifier (SOA)-based wavelength blockers can be used as fundamental building blocks to add and drop optical channels in the node architecture of several network hierarchical levels. Even if its employment is advantageous in terms of costs and amplification bandwidth, the SOA can operate in a nonlinear regime. This work analyzes the impact of SOA-based node crossing on high-capacity discrete multitone (DMT) signals. In order to properly evaluate the interplay between optical channels and SOA self-gain modulation, both external and direct modulations are considered. Dual-sideband (DSB) and single-sideband (SSB) DMT variants are taken into account, showing no significant difference in the impact of SOA crossing for external modulation of a DFB laser. On the other hand, an important effect of subcarrier suppression arises on DSB DMT direct modulation of a vertical cavity surface emitting laser (VCSEL), less consistent for SSB DMT direct modulation. The analysis allowed to properly choose the bias current for the SOA employed in an experimental setup used to evaluate the transmission performance in a MAN scenario including add-drop lossless switch nodes. The experimental results demonstrate that a target capacity of more than 50 Gb/s per channel can be achieved in a 116-km MAN network composed of an SOA-based metro-access node and two metro-core aggregators, considering the transmission of three 25-GHzspaced DMT channels.},\n bibtype = {article},\n author = {Rapisarda, M. and Gatto, A. and Parolari, P. and Tessema, N. and Prifti, K. and Calabretta, N. and Neumeyr, C. and Boffi, P.},\n doi = {10.1109/JLT.2022.3164333},\n journal = {Journal of Lightwave Technology},\n number = {14}\n}\n\n Internet-generated traffic growth is forcing the development of new low-cost solutions in metropolitan area networks (MANs), in particular in the transceiver and network node architectures. Semiconductor optical amplifier (SOA)-based wavelength blockers can be used as fundamental building blocks to add and drop optical channels in the node architecture of several network hierarchical levels. Even if its employment is advantageous in terms of costs and amplification bandwidth, the SOA can operate in a nonlinear regime. This work analyzes the impact of SOA-based node crossing on high-capacity discrete multitone (DMT) signals. In order to properly evaluate the interplay between optical channels and SOA self-gain modulation, both external and direct modulations are considered. Dual-sideband (DSB) and single-sideband (SSB) DMT variants are taken into account, showing no significant difference in the impact of SOA crossing for external modulation of a DFB laser. On the other hand, an important effect of subcarrier suppression arises on DSB DMT direct modulation of a vertical cavity surface emitting laser (VCSEL), less consistent for SSB DMT direct modulation. The analysis allowed to properly choose the bias current for the SOA employed in an experimental setup used to evaluate the transmission performance in a MAN scenario including add-drop lossless switch nodes. The experimental results demonstrate that a target capacity of more than 50 Gb/s per channel can be achieved in a 116-km MAN network composed of an SOA-based metro-access node and two metro-core aggregators, considering the transmission of three 25-GHzspaced DMT channels.\n
\n\n\n\n \n\n \n \n \n \n \n All-optical aggregation and distribution of traffic in large metropolitan area networks using multi-Tb/s S-BVTs.\n \n \n \n\n\n \n Rapisarda, M.; Hernandez, J.; Gatto, A.; Parolari, P.; Boffi, P.; Svaluto Moreolo, M.; Fabrega, J.; Nadal, L.; Martinez, R.; Lopez, V.; Fernandez-Palacios, J.; Otero, G.; and Larrabeiti, D.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 14(5). 2022.\n \n\n\n\n
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\n\n\n@article{\n title = {All-optical aggregation and distribution of traffic in large metropolitan area networks using multi-Tb/s S-BVTs},\n type = {article},\n year = {2022},\n volume = {14},\n id = {9d6cb02c-1a84-3a37-b4de-91caed081cb0},\n created = {2023-05-29T11:52:26.540Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.540Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Current metropolitan area network architectures are based on a number of hierarchical levels that aggregate traffic toward the core at the IP layer. In this setting, routers are interconnected by means of fixed transceivers operating on a point-to-point basis where the rates of transceivers need to match. This implies a great deal of intermediate transceivers to collect traffic and groom and send it to the core. This paper proposes an alternative scheme based on sliceable bandwidth/bitrate variable transceivers (S-BVTs) where the slice-ability property is exploited to perform the aggregation of traffic from multiple edges n-to-1 rather than 1-to-1. This approach can feature relevant cost reductions through IP offloading at intermediate transit nodes but requires viable optical signal-to-noise ratio (OSNR) margins for all-optical transmission through the network. In this work, we prove through simulation the viability and applicability of this technique in large metro networks with a vertical-cavity-surface-emitting laser-based S-BVT design to target net capacities per channel of 25, 40, and 50 Gb/s. The study reveals that this technology can support most of the paths required for IP offloading after simulation in a semi-synthetic topology modeling a 20-million-inhabitant metropolitan area. Moreover, OSNR margins enable the use of protection paths (secondary disjoint paths) between the target node and the core much longer than primary paths in terms of both the number of intermediate hops and kilometers.},\n bibtype = {article},\n author = {Rapisarda, M. and Hernandez, J.A. and Gatto, A. and Parolari, P. and Boffi, P. and Svaluto Moreolo, M. and Fabrega, J.M. and Nadal, L. and Martinez, R. and Lopez, V. and Fernandez-Palacios, J.-P. and Otero, G. and Larrabeiti, D.},\n doi = {10.1364/JOCN.448115},\n journal = {Journal of Optical Communications and Networking},\n number = {5}\n}\n\n Current metropolitan area network architectures are based on a number of hierarchical levels that aggregate traffic toward the core at the IP layer. In this setting, routers are interconnected by means of fixed transceivers operating on a point-to-point basis where the rates of transceivers need to match. This implies a great deal of intermediate transceivers to collect traffic and groom and send it to the core. This paper proposes an alternative scheme based on sliceable bandwidth/bitrate variable transceivers (S-BVTs) where the slice-ability property is exploited to perform the aggregation of traffic from multiple edges n-to-1 rather than 1-to-1. This approach can feature relevant cost reductions through IP offloading at intermediate transit nodes but requires viable optical signal-to-noise ratio (OSNR) margins for all-optical transmission through the network. In this work, we prove through simulation the viability and applicability of this technique in large metro networks with a vertical-cavity-surface-emitting laser-based S-BVT design to target net capacities per channel of 25, 40, and 50 Gb/s. The study reveals that this technology can support most of the paths required for IP offloading after simulation in a semi-synthetic topology modeling a 20-million-inhabitant metropolitan area. Moreover, OSNR margins enable the use of protection paths (secondary disjoint paths) between the target node and the core much longer than primary paths in terms of both the number of intermediate hops and kilometers.\n
\n\n\n\n \n\n \n \n \n \n \n Mode-Group Division Multiplexing: Transmission, Node Architecture, and Provisioning.\n \n \n \n\n\n \n Boffi, P.; Sambo, N.; Martelli, P.; Parolari, P.; Gatto, A.; Cugini, F.; and Castoldi, P.\n\n\n \n\n\n\n Journal of Lightwave Technology, 40(8). 2022.\n \n\n\n\n
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\n\n\n@article{\n title = {Mode-Group Division Multiplexing: Transmission, Node Architecture, and Provisioning},\n type = {article},\n year = {2022},\n keywords = {FMF,SDM,multi-core,multi-mode},\n volume = {40},\n id = {96b0f869-5fac-34f0-8457-f2a3469e0e79},\n created = {2023-05-29T11:52:26.558Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.558Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Few Mode Fibers (FMF) and Space DivisionMultiplexing (SDM) are an attractive solution to offer high capacity in optical networks. Although transmission along FMF presents several issues mainly due to the cross-talk among modes, the use of Multiple Input Multiple Output (MIMO) coherent receivers permits to limit the impact of such physical impairment. However, the complexity of MIMO is not negligible (especially with a large number of modes) and the spatial modes must cover the same path, thus limiting network flexibility, e.g., routing modes along different paths is not admitted. In this paper we exploit the concept of Mode-Group Division Multiplexing (MGDM) and we investigate the network architecture and provisioning supporting MGDM. Modes are divided in groups: the modes within a group are co-routed and received with a reduced-complexity MIMO receiver, while the different groups can be routed along different paths. Different node architectures supporting MGDM are presented taking in account state-of-the-art components and devices, even commercially available on the market. A quality of transmission (QoT) model is also presented accounting to the inter mode group crosstalk, that cannot be neglected in the reach evaluation. QoT is exploited by a proposed connection provisioning scheme for MGDM. Simulations are carried out in metro/rural network scenarios with different link span lengths. Simulations show high throughput increase while limiting the complexity of receivers.},\n bibtype = {article},\n author = {Boffi, P. and Sambo, N. and Martelli, P. and Parolari, P. and Gatto, A. and Cugini, F. and Castoldi, P.},\n doi = {10.1109/JLT.2021.3135636},\n journal = {Journal of Lightwave Technology},\n number = {8}\n}\n\n Few Mode Fibers (FMF) and Space DivisionMultiplexing (SDM) are an attractive solution to offer high capacity in optical networks. Although transmission along FMF presents several issues mainly due to the cross-talk among modes, the use of Multiple Input Multiple Output (MIMO) coherent receivers permits to limit the impact of such physical impairment. However, the complexity of MIMO is not negligible (especially with a large number of modes) and the spatial modes must cover the same path, thus limiting network flexibility, e.g., routing modes along different paths is not admitted. In this paper we exploit the concept of Mode-Group Division Multiplexing (MGDM) and we investigate the network architecture and provisioning supporting MGDM. Modes are divided in groups: the modes within a group are co-routed and received with a reduced-complexity MIMO receiver, while the different groups can be routed along different paths. Different node architectures supporting MGDM are presented taking in account state-of-the-art components and devices, even commercially available on the market. A quality of transmission (QoT) model is also presented accounting to the inter mode group crosstalk, that cannot be neglected in the reach evaluation. QoT is exploited by a proposed connection provisioning scheme for MGDM. Simulations are carried out in metro/rural network scenarios with different link span lengths. Simulations show high throughput increase while limiting the complexity of receivers.\n
\n\n\n\n \n\n \n \n \n \n \n Coexistence of OTN and VCSEL-based DMT Channels for Multi-Tb/s Transmission in Metropolitan Area Networks.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Lipparini, F.; Morea, R.; Parisi, G.; Parladori, G.; Neumeyr, C.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2022. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Coexistence of OTN and VCSEL-based DMT Channels for Multi-Tb/s Transmission in Metropolitan Area Networks},\n type = {inproceedings},\n year = {2022},\n id = {878a3f19-4018-3335-a50e-e253917a010a},\n created = {2023-05-29T11:52:26.592Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.592Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We demonstrate the coexistence of 100G-200G OTN channels with a novel transmitter technology based on directly modulated VCSELs exploiting DMT. Multi-Tb/s transmission is achieved in links typical of the metro network.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Lipparini, F. and Morea, R. and Parisi, G. and Parladori, G. and Neumeyr, C. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We demonstrate the coexistence of 100G-200G OTN channels with a novel transmitter technology based on directly modulated VCSELs exploiting DMT. Multi-Tb/s transmission is achieved in links typical of the metro network.\n
\n\n\n\n \n\n \n \n \n \n \n Experimental Demonstration of a Metro Area Network with Terabit-capable Sliceable Bitrate Variable Transceiver using Direct Modulated VCSELs and Coherent Detection.\n \n \n \n\n\n \n Fabrega, J.; Vílchez, F.; Moreolo, M.; Martínez, R.; Quispe, A.; Nadal, L.; Casellas, R.; Vilalta, R.; Muñoz, R.; Neumeyr, C.; Lee, S.; Shin, J.; Jung, H.; Mariani, G.; Heuvelmans, R.; Gatto, A.; Parolari, P.; Boffi, P.; Tessema, N.; Calabretta, N.; Larrabeiti, D.; and Fernández-Palacios, J.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2022. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Experimental Demonstration of a Metro Area Network with Terabit-capable Sliceable Bitrate Variable Transceiver using Direct Modulated VCSELs and Coherent Detection},\n type = {inproceedings},\n year = {2022},\n id = {0886c79a-bc21-336f-8334-a8dac45430be},\n created = {2023-05-29T11:52:26.626Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.626Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We experimentally demonstrate a disaggregated metro area network that includes new photonic devices, node architectures, and sliceable bandwidth/bitrate variable transceiver, transmitting up to 8×11=88 spatial/spectral channels for a total capacity of 1.676Tb/s.},\n bibtype = {inproceedings},\n author = {Fabrega, J.M. and Vílchez, F.J. and Moreolo, M.S. and Martínez, R. and Quispe, A. and Nadal, L. and Casellas, R. and Vilalta, R. and Muñoz, R. and Neumeyr, C. and Lee, S.Y. and Shin, J.U. and Jung, H.D. and Mariani, G. and Heuvelmans, R. and Gatto, A. and Parolari, P. and Boffi, P. and Tessema, N.M. and Calabretta, N. and Larrabeiti, D. and Fernández-Palacios, J.P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We experimentally demonstrate a disaggregated metro area network that includes new photonic devices, node architectures, and sliceable bandwidth/bitrate variable transceiver, transmitting up to 8×11=88 spatial/spectral channels for a total capacity of 1.676Tb/s.\n
\n\n\n\n \n\n \n \n \n \n \n Experimental Demonstration of a Metro Area Network with Terabit-capable Sliceable Bitrate Variable Transceiver using Direct Modulated VCSELs and Coherent Detection.\n \n \n \n\n\n \n Fabrega, J.; Vilchez, F.; Moreolo, M.; Martinez, R.; Quispe, A.; Nadal, L.; Casellas, R.; Vilalta, R.; Munoz, R.; Neumeyr, C.; Lee, S.; Shin, J.; Jung, H.; Mariani, G.; Heuvelmans, R.; Gatto, A.; Parolari, P.; Boffi, P.; Tessema, N.; Calabretta, N.; Larrabeiti, D.; and Fernandez-Palacios, J.\n\n\n \n\n\n\n In 2022 Optical Fiber Communications Conference and Exhibition, OFC 2022 - Proceedings, 2022. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Experimental Demonstration of a Metro Area Network with Terabit-capable Sliceable Bitrate Variable Transceiver using Direct Modulated VCSELs and Coherent Detection},\n type = {inproceedings},\n year = {2022},\n id = {62cd439d-64d3-3741-9441-0905431fe7a3},\n created = {2023-05-29T11:52:26.672Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.672Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We experimentally demonstrate a disaggregated metro area network that includes new photonic devices, node architectures, and sliceable bandwidth/bitrate variable transceiver, transmitting up to 8times 11=88 spatial/spectral channels for a total capacity of 1.676Tb/s.},\n bibtype = {inproceedings},\n author = {Fabrega, J.M. and Vilchez, F.J. and Moreolo, M.S. and Martinez, R. and Quispe, A. and Nadal, L. and Casellas, R. and Vilalta, R. and Munoz, R. and Neumeyr, C. and Lee, S.Y. and Shin, J.U. and Jung, H.D. and Mariani, G. and Heuvelmans, R. and Gatto, A. and Parolari, P. and Boffi, P. and Tessema, N.M. and Calabretta, N. and Larrabeiti, D. and Fernandez-Palacios, J.P.},\n booktitle = {2022 Optical Fiber Communications Conference and Exhibition, OFC 2022 - Proceedings}\n}\n\n We experimentally demonstrate a disaggregated metro area network that includes new photonic devices, node architectures, and sliceable bandwidth/bitrate variable transceiver, transmitting up to 8times 11=88 spatial/spectral channels for a total capacity of 1.676Tb/s.\n
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\n \n \n\n \n \n \n \n \n Enabling dynamic all optical IP off-loading at Tb/s rates in large Metro Networks.\n \n \n \n\n\n \n Hernandez, J.; Rapisarda, M.; Gatto, A.; Parolari, P.; Moreolo, M.; Fabrega, J.; Nadal, L.; Martinez, R.; Lopez, V.; Fernandez-Palacios, J.; Boffi, P.; Otero, G.; and Larrabeiti, D.\n\n\n \n\n\n\n In 2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings, 2021. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Enabling dynamic all optical IP off-loading at Tb/s rates in large Metro Networks},\n type = {inproceedings},\n year = {2021},\n id = {089d6deb-ec04-391f-b3c6-0ef346e45469},\n created = {2023-05-29T11:52:26.694Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.694Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Simulation experiments prove the suitability of VCSEL-based S-BVTs to enable IP off-loading in large MAN topologies. Multi-Tb/s capacity is demonstrated in a real MAN for all primary and secondary multi-level direct paths.},\n bibtype = {inproceedings},\n author = {Hernandez, J.A. and Rapisarda, M. and Gatto, A. and Parolari, P. and Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Martinez, R. and Lopez, V. and Fernandez-Palacios, J.P. and Boffi, P. and Otero, G. and Larrabeiti, D.},\n booktitle = {2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings}\n}\n\n Simulation experiments prove the suitability of VCSEL-based S-BVTs to enable IP off-loading in large MAN topologies. Multi-Tb/s capacity is demonstrated in a real MAN for all primary and secondary multi-level direct paths.\n
\n\n\n\n \n\n \n \n \n \n \n Add-Drop Lossless Switch Node in Multi-Hop Multi-Tb/s Metropolitan Area Networks.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Parolari, P.; Tessema, N.; Calabretta, N.; Neumeyr, C.; and Boffi, P.\n\n\n \n\n\n\n In 2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Add-Drop Lossless Switch Node in Multi-Hop Multi-Tb/s Metropolitan Area Networks},\n type = {inproceedings},\n year = {2021},\n id = {2da7e9d5-8d71-3370-acb2-de8236d53870},\n created = {2023-05-29T11:52:26.720Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.720Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The effect of SOA-based MAN node crossing on DMT high-capacity transmission is experimentally evaluated. A capacity of more than 50 Gb/s per channel is demonstrated for a multi-hop multi-channel transmission up to 116 km SSMF.},\n bibtype = {inproceedings},\n author = {Rapisarda, M. and Gatto, A. and Parolari, P. and Tessema, N. and Calabretta, N. and Neumeyr, C. and Boffi, P.},\n booktitle = {2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings}\n}\n\n The effect of SOA-based MAN node crossing on DMT high-capacity transmission is experimentally evaluated. A capacity of more than 50 Gb/s per channel is demonstrated for a multi-hop multi-channel transmission up to 116 km SSMF.\n
\n\n\n\n \n\n \n \n \n \n \n Demonstration of an SDN-enabled VCSEL-based Photonic System for Spectral/Spatial Connectivity in Disaggregated Optical Metro Networks.\n \n \n \n\n\n \n Moreolo, M.; Martinez, R.; Fabrega, J.; Casellas, R.; Vilchez, J.; Nadal, L.; Vilalta, R.; Munoz, R.; Neumeyr, C.; Jung, H.; Shin, J.; Gatto, A.; Parolari, P.; Boffi, P.; Larrabeiti, D.; and Fernandez-Palacios, J.\n\n\n \n\n\n\n In 2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Demonstration of an SDN-enabled VCSEL-based Photonic System for Spectral/Spatial Connectivity in Disaggregated Optical Metro Networks},\n type = {inproceedings},\n year = {2021},\n id = {b5a29228-c897-3f31-8a48-914ada581421},\n created = {2023-05-29T11:52:26.755Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.755Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {This demo showcases an SDN control platform configuring VCSEL-based photonic transceiver and white-box nodes for end-to-end programmability in disaggregated optical metro networks also including the spatial dimension with a polymer switch and 25km 19-core MCF.},\n bibtype = {inproceedings},\n author = {Moreolo, M.S. and Martinez, R. and Fabrega, J.M. and Casellas, R. and Vilchez, J. and Nadal, L. and Vilalta, R. and Munoz, R. and Neumeyr, C. and Jung, H.D. and Shin, J.U. and Gatto, A. and Parolari, P. and Boffi, P. and Larrabeiti, D. and Fernandez-Palacios, J.P.},\n booktitle = {2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings}\n}\n\n This demo showcases an SDN control platform configuring VCSEL-based photonic transceiver and white-box nodes for end-to-end programmability in disaggregated optical metro networks also including the spatial dimension with a polymer switch and 25km 19-core MCF.\n
\n\n\n\n \n\n \n \n \n \n \n Performance Impairments due to Inter-Core Crosstalk Dynamics in a 7-core MCF-based DMT-modulated Link.\n \n \n \n\n\n \n Gatto, A.; Rapisarda, M.; Parolari, P.; Puttnam, B.; Rademacher, G.; Luis, R.; and Boffi, P.\n\n\n \n\n\n\n In 2021 Conference on Lasers and Electro-Optics, CLEO 2021 - Proceedings, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Performance Impairments due to Inter-Core Crosstalk Dynamics in a 7-core MCF-based DMT-modulated Link},\n type = {inproceedings},\n year = {2021},\n id = {b31cd7bf-6d75-3816-96ab-58e22db67ddc},\n created = {2023-05-29T11:52:26.770Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.770Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We investigate inter-core crosstalk impact on DMT-modulated signals in a 7-core fiber with different sources at the same nominal wavelength. We observe beating from relative laser frequency shift leads to time-dependent interference on DMT subcarriers.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Rapisarda, M. and Parolari, P. and Puttnam, B.J. and Rademacher, G. and Luis, R.S. and Boffi, P.},\n booktitle = {2021 Conference on Lasers and Electro-Optics, CLEO 2021 - Proceedings}\n}\n\n We investigate inter-core crosstalk impact on DMT-modulated signals in a 7-core fiber with different sources at the same nominal wavelength. We observe beating from relative laser frequency shift leads to time-dependent interference on DMT subcarriers.\n
\n\n\n\n \n\n \n \n \n \n \n Programmable VCSEL-based photonic system architecture for future agile Tb/s metro networks.\n \n \n \n\n\n \n Moreolo, M.; Fabrega, J.; Nadal, L.; Martinez, R.; Casellas, R.; Vilchez, J.; Munoz, R.; Vilalta, R.; Gatto, A.; Parolari, P.; Boffi, P.; Neumeyr, C.; Larrabeiti, D.; Otero, G.; and Fernandez-Palacios, J.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 13(2). 2021.\n \n\n\n\n
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\n\n\n@article{\n title = {Programmable VCSEL-based photonic system architecture for future agile Tb/s metro networks},\n type = {article},\n year = {2021},\n volume = {13},\n id = {3cd2fb10-4dd2-3afb-9fd5-b73b50913c9c},\n created = {2023-05-29T11:52:26.818Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.818Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {To deal with the challenging requirements of metropolitan area networks (MANs), it is essential to design cost-effective systems that can support high capacity and dynamic adaptation, as well as a synergy of programmability and efficient photonic technologies. This becomes crucial for very large MANs that support 5G, where multihop connections will need to be dynamically established at target capacities beyond Tb/s. Programmability, automation, and modularity of network elements are key desired features. In this work, a modular photonic system, programmable via a software-defined networking platform, designed for dynamic 5G-supportive MANs, is described and analyzed. We consider modular sliceable bandwidth/bit rate variable transceivers (S-BVTs) based on vertical-cavity surface-emitting laser (VCSEL) technology and dense photonic integration. The proposed system and its programmability are experimentally assessed using a VCSEL with 10 GHz bandwidth. The experiments are performed over connections as long as six-hop and 160 km, from low-level aggregation nodes to metro-core nodes, thereby enabling IP off-loading. Furthermore, a numerical model is derived to estimate the performance when adopting higher bandwidth VCSELs (≥18 GHz) and integrated coherent receivers, as targeted in the proposed system. The analysis is performed for both 50 GHz and 25 GHz granularities. In the former case, 50 Gb/s capacity per flow can be supported over the targeted connections, for optical signal-to-noise ratio values above 26 dB. When the granularity is 25 GHz, the filter narrowing effect severely impacts the performance. Nevertheless, 1.2 Tb/s capacity (scalable to higher values if spectral/spatial dimensions are exploited) can be achieved when configuring the S-BVT to enable 40 VCSEL flows. This confirms that the system is promising to support Tb/s connections in future agile MANs.},\n bibtype = {article},\n author = {Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Martinez, R. and Casellas, R. and Vilchez, J. and Munoz, R. and Vilalta, R. and Gatto, A. and Parolari, P. and Boffi, P. and Neumeyr, C. and Larrabeiti, D. and Otero, G. and Fernandez-Palacios, J.P.},\n doi = {10.1364/JOCN.411964},\n journal = {Journal of Optical Communications and Networking},\n number = {2}\n}\n\n To deal with the challenging requirements of metropolitan area networks (MANs), it is essential to design cost-effective systems that can support high capacity and dynamic adaptation, as well as a synergy of programmability and efficient photonic technologies. This becomes crucial for very large MANs that support 5G, where multihop connections will need to be dynamically established at target capacities beyond Tb/s. Programmability, automation, and modularity of network elements are key desired features. In this work, a modular photonic system, programmable via a software-defined networking platform, designed for dynamic 5G-supportive MANs, is described and analyzed. We consider modular sliceable bandwidth/bit rate variable transceivers (S-BVTs) based on vertical-cavity surface-emitting laser (VCSEL) technology and dense photonic integration. The proposed system and its programmability are experimentally assessed using a VCSEL with 10 GHz bandwidth. The experiments are performed over connections as long as six-hop and 160 km, from low-level aggregation nodes to metro-core nodes, thereby enabling IP off-loading. Furthermore, a numerical model is derived to estimate the performance when adopting higher bandwidth VCSELs (≥18 GHz) and integrated coherent receivers, as targeted in the proposed system. The analysis is performed for both 50 GHz and 25 GHz granularities. In the former case, 50 Gb/s capacity per flow can be supported over the targeted connections, for optical signal-to-noise ratio values above 26 dB. When the granularity is 25 GHz, the filter narrowing effect severely impacts the performance. Nevertheless, 1.2 Tb/s capacity (scalable to higher values if spectral/spatial dimensions are exploited) can be achieved when configuring the S-BVT to enable 40 VCSEL flows. This confirms that the system is promising to support Tb/s connections in future agile MANs.\n
\n\n\n\n \n\n \n \n \n \n \n Add-drop lossless switch node in multi-hop multi-Tb/s metropolitan area networks.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Parolari, P.; Tessema, N.; Calabretta, N.; Neumeyr, C.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Add-drop lossless switch node in multi-hop multi-Tb/s metropolitan area networks},\n type = {inproceedings},\n year = {2021},\n id = {0e3911c0-603c-3c77-a5d8-ca3d68b6adb8},\n created = {2023-05-29T11:52:26.822Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.822Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The effect of SOA-based MAN node crossing on DMT high-capacity transmission is experimentally evaluated. A capacity of more than 50 Gb/s per channel is demonstrated for a multi-hop multi-channel transmission up to 116 km SSMF.},\n bibtype = {inproceedings},\n author = {Rapisarda, M. and Gatto, A. and Parolari, P. and Tessema, N. and Calabretta, N. and Neumeyr, C. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n The effect of SOA-based MAN node crossing on DMT high-capacity transmission is experimentally evaluated. A capacity of more than 50 Gb/s per channel is demonstrated for a multi-hop multi-channel transmission up to 116 km SSMF.\n
\n\n\n\n \n\n \n \n \n \n \n Enabling dynamic all optical IP off-loading at Tb/s rates in large metro networks.\n \n \n \n\n\n \n Hernández, J.; Rapisarda, M.; Gatto, A.; Parolari, P.; Moreolo, M.; Fabrega, J.; Nadal, L.; Martínez, R.; López, V.; Fernandez-Palacios, J.; Boffi, P.; Otero, G.; and Larrabeiti, D.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Enabling dynamic all optical IP off-loading at Tb/s rates in large metro networks},\n type = {inproceedings},\n year = {2021},\n id = {9ed89a66-a8f3-34e1-bebe-6c6342150ed0},\n created = {2023-05-29T11:52:26.887Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.887Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Simulation experiments prove the suitability of VCSEL-based S-BVTs to enable IP off-loading in large MAN topologies. Multi-Tb/s capacity is demonstrated in a real MAN for all primary and secondary multi-level direct paths.},\n bibtype = {inproceedings},\n author = {Hernández, J.A. and Rapisarda, M. and Gatto, A. and Parolari, P. and Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Martínez, R. and López, V. and Fernandez-Palacios, J.P. and Boffi, P. and Otero, G. and Larrabeiti, D.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Simulation experiments prove the suitability of VCSEL-based S-BVTs to enable IP off-loading in large MAN topologies. Multi-Tb/s capacity is demonstrated in a real MAN for all primary and secondary multi-level direct paths.\n
\n\n\n\n \n\n \n \n \n \n \n Demonstration of an SDN-enabled VCSEL-based photonic system for spectral/spatial connectivity in disaggregated optical metro networks.\n \n \n \n\n\n \n Moreolo, M.; Martínez, R.; Fabrega, J.; Casellas, R.; Vílchez, J.; Nadal, L.; Vilalta, R.; Muñoz, R.; Neumeyr, C.; Jung, H.; Shin, J.; Gatto, A.; Parolari, P.; Boffi, P.; Larrabeiti, D.; and Fernández-Palacios, J.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Demonstration of an SDN-enabled VCSEL-based photonic system for spectral/spatial connectivity in disaggregated optical metro networks},\n type = {inproceedings},\n year = {2021},\n id = {fd7d33f4-154a-3f15-99fe-e63bb53377b9},\n created = {2023-05-29T11:52:26.892Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.892Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {This demo showcases an SDN control platform configuring VCSEL-based photonic transceiver and white-box nodes for end-to-end programmability in disaggregated optical metro networks also including the spatial dimension with a polymer switch and 25km 19-core MCF.},\n bibtype = {inproceedings},\n author = {Moreolo, M.S. and Martínez, R. and Fabrega, J.M. and Casellas, R. and Vílchez, J. and Nadal, L. and Vilalta, R. and Muñoz, R. and Neumeyr, C. and Jung, H.D. and Shin, J.U. and Gatto, A. and Parolari, P. and Boffi, P. and Larrabeiti, D. and Fernández-Palacios, J.P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n This demo showcases an SDN control platform configuring VCSEL-based photonic transceiver and white-box nodes for end-to-end programmability in disaggregated optical metro networks also including the spatial dimension with a polymer switch and 25km 19-core MCF.\n
\n\n\n\n \n\n \n \n \n \n \n Tb/s Transmission in Sustainable and Flexible Metro Networks using Long-Wavelength VCSELs.\n \n \n \n\n\n \n Boffi, P.; Parolari, P.; Gatto, A.; Rapisarda, M.; Lipparini, F.; Moreolo, M.; Fabrega, J.; Neumeyr, C.; Delrosso, G.; Puttnam, B.; Severi, M.; and Parladori, G.\n\n\n \n\n\n\n In Asia Communications and Photonics Conference, ACP, volume 2021-Octob, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Tb/s Transmission in Sustainable and Flexible Metro Networks using Long-Wavelength VCSELs},\n type = {inproceedings},\n year = {2021},\n volume = {2021-Octob},\n id = {884039fa-2a21-3689-baa3-47ec3871e77e},\n created = {2023-05-29T11:52:26.941Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.941Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Tb/s transmission for future metropolitan networks is demonstrated thanks to an innovative photonic cost-effective and energy-efficient transmitter module integrating multiple directly modulated long-wavelength InP VCSELs targeting more than 50-Gb/s per channel, together with multi-core fiber propagation.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Parolari, P. and Gatto, A. and Rapisarda, M. and Lipparini, F. and Moreolo, M.S. and Fabrega, J.M. and Neumeyr, C. and Delrosso, G. and Puttnam, B. and Severi, M. and Parladori, G.},\n booktitle = {Asia Communications and Photonics Conference, ACP}\n}\n\n Tb/s transmission for future metropolitan networks is demonstrated thanks to an innovative photonic cost-effective and energy-efficient transmitter module integrating multiple directly modulated long-wavelength InP VCSELs targeting more than 50-Gb/s per channel, together with multi-core fiber propagation.\n
\n\n\n\n \n\n \n \n \n \n \n Mode Group Division Multiplexing: Transmission, node architecture, and provisioning.\n \n \n \n\n\n \n Sambo, N.; Martelli, P.; Parolari, P.; Gatto, A.; Cugini, F.; Castoldi, P.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Mode Group Division Multiplexing: Transmission, node architecture, and provisioning},\n type = {inproceedings},\n year = {2021},\n id = {35e6cb69-a669-3f5a-8a64-0d332dae74a8},\n created = {2023-05-29T11:52:26.943Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.943Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {This paper presents Mode Group Division Multiplexing (MGDM), discussing transmission aspects, node architecture, and provisioning.},\n bibtype = {inproceedings},\n author = {Sambo, N. and Martelli, P. and Parolari, P. and Gatto, A. and Cugini, F. and Castoldi, P. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n This paper presents Mode Group Division Multiplexing (MGDM), discussing transmission aspects, node architecture, and provisioning.\n
\n\n\n\n \n\n \n \n \n \n \n SOA-based loss-less switch nodes for Tb/s multicarrier Transmission.\n \n \n \n\n\n \n Parolari, P.; Rapisarda, M.; Gatto, A.; Lipparini, F.; Tessema, N.; Calabretta, N.; Neumeyr, C.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {SOA-based loss-less switch nodes for Tb/s multicarrier Transmission},\n type = {inproceedings},\n year = {2021},\n id = {c0095f94-d4b1-3b13-ba7f-9b2c10060d28},\n created = {2023-05-29T11:52:26.988Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:26.988Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Loss-less nodes based on semiconductor optical amplifiers to enable add/drop functionalities are studied in order to preserve the traffic throughput when adopting high-capacity multicarrier signal formats in metropolitan area networks.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Rapisarda, M. and Gatto, A. and Lipparini, F. and Tessema, N. and Calabretta, N. and Neumeyr, C. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Loss-less nodes based on semiconductor optical amplifiers to enable add/drop functionalities are studied in order to preserve the traffic throughput when adopting high-capacity multicarrier signal formats in metropolitan area networks.\n
\n\n\n\n \n\n \n \n \n \n \n Performance impairments due to inter-core crosstalk dynamics in a 7-core MCF-based DMT-modulated link.\n \n \n \n\n\n \n Gatto, A.; Rapisarda, M.; Parolari, P.; Puttnam, B.; Rademacher, G.; Luís, R.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Performance impairments due to inter-core crosstalk dynamics in a 7-core MCF-based DMT-modulated link},\n type = {inproceedings},\n year = {2021},\n id = {f1160c65-ae0e-3824-b25c-e71256aa72f2},\n created = {2023-05-29T11:52:27.001Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.001Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We investigate inter-core crosstalk impact on DMT-modulated signals in a 7-core fiber with different sources at the same nominal wavelength. We observe beating from relative laser frequency shift leads to time-dependent interference on DMT subcarriers.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Rapisarda, M. and Parolari, P. and Puttnam, B.J. and Rademacher, G. and Luís, R.S. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We investigate inter-core crosstalk impact on DMT-modulated signals in a 7-core fiber with different sources at the same nominal wavelength. We observe beating from relative laser frequency shift leads to time-dependent interference on DMT subcarriers.\n
\n\n\n\n \n\n \n \n \n \n \n SDN-controlled photonic system architectures for Tb/s MAN connectivity.\n \n \n \n\n\n \n Moreolo, M.; Martínez, R.; Fabrega, J.; Casellas, R.; Nadal, L.; Vílchez, F.; Vilalta, R.; Muñoz, R.; Neumeyr, C.; Gatto, A.; Parolari, P.; Boffi, P.; Larrabeiti, D.; Hernandez, J.; and Fernández-Palacios, J.\n\n\n \n\n\n\n In Photonische Netze - 22. ITG-Fachtagung, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {SDN-controlled photonic system architectures for Tb/s MAN connectivity},\n type = {inproceedings},\n year = {2021},\n keywords = {MAN,S-BVT,SDN,VCSEL},\n id = {fae44bec-2ed7-3f3d-be2e-dde3f82af068},\n created = {2023-05-29T11:52:27.046Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.046Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {According to the ever-increasing bandwidth pressure and hyperconnectivity, as particularly experienced during recent times, the metro area network (MAN) is a crucial segment to address the related challenges and requirements efficiently in terms of cost, power consumption and footprint. Recently proposed modular programmable photonic system architectures for enabling Tb/s connectivity in dynamic and agile MANs are presented. Special focus is devoted to S-BVT using vertical cavity surface emitting lasers (VCSELs) characterized by high modulation bandwidth and able to operate at long wavelengths and particularly within the C-band. Spectrum and space dimensions are considered to enable multi-Tb/s capacity. This approach combined with photonic integration, modularity and software defined networking (SDN) allows to obtain scalable architectures for future disaggregated optical metro networks. Programmability aspects and recent results achieved in a real network testbed are reported.},\n bibtype = {inproceedings},\n author = {Moreolo, M.S. and Martínez, R. and Fabrega, J.M. and Casellas, R. and Nadal, L. and Vílchez, F.J. and Vilalta, R. and Muñoz, R. and Neumeyr, C. and Gatto, A. and Parolari, P. and Boffi, P. and Larrabeiti, D. and Hernandez, J.A. and Fernández-Palacios, J.P.},\n booktitle = {Photonische Netze - 22. ITG-Fachtagung}\n}\n\n According to the ever-increasing bandwidth pressure and hyperconnectivity, as particularly experienced during recent times, the metro area network (MAN) is a crucial segment to address the related challenges and requirements efficiently in terms of cost, power consumption and footprint. Recently proposed modular programmable photonic system architectures for enabling Tb/s connectivity in dynamic and agile MANs are presented. Special focus is devoted to S-BVT using vertical cavity surface emitting lasers (VCSELs) characterized by high modulation bandwidth and able to operate at long wavelengths and particularly within the C-band. Spectrum and space dimensions are considered to enable multi-Tb/s capacity. This approach combined with photonic integration, modularity and software defined networking (SDN) allows to obtain scalable architectures for future disaggregated optical metro networks. Programmability aspects and recent results achieved in a real network testbed are reported.\n
\n\n\n\n \n\n \n \n \n \n \n Long-wavelength InP VCSEL exploitation for innovative sustainable high-capacity transmitter.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Neumeyr, C.; Delrosso, G.; Bhat, S.; Moreolo, M.; Parladori, G.; and Boffi, P.\n\n\n \n\n\n\n In Photonische Netze - 22. ITG-Fachtagung, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Long-wavelength InP VCSEL exploitation for innovative sustainable high-capacity transmitter},\n type = {inproceedings},\n year = {2021},\n keywords = {DMT,PIC,SOI,VCSEL},\n id = {b09ef104-6e5f-3377-8a60-18cad7dd5ced},\n created = {2023-05-29T11:52:27.047Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.047Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {A sustainable transmitter enabling multi Tb/s capacity is designed and realized in a silicon photonics platform exploiting the benefits of InP VCSEL sources in terms of cost, power consumption and footprint. 40 VCSELs covering the C band integrated together in a single module achieve 2 Tb/s transmission rate thanks to DMT modulation format.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Neumeyr, C. and Delrosso, G. and Bhat, S. and Moreolo, M.S. and Parladori, G. and Boffi, P.},\n booktitle = {Photonische Netze - 22. ITG-Fachtagung}\n}\n\n A sustainable transmitter enabling multi Tb/s capacity is designed and realized in a silicon photonics platform exploiting the benefits of InP VCSEL sources in terms of cost, power consumption and footprint. 40 VCSELs covering the C band integrated together in a single module achieve 2 Tb/s transmission rate thanks to DMT modulation format.\n
\n\n\n\n \n\n \n \n \n \n \n Multi-Tb/s photonic transceivers for metro optical network connectivity evolution.\n \n \n \n\n\n \n Svaluto Moreolo, M.; Nadal, L.; Fabrega, J.; Vilchez, F.; Neumeyr, C.; Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 11712, 2021. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Multi-Tb/s photonic transceivers for metro optical network connectivity evolution},\n type = {inproceedings},\n year = {2021},\n keywords = {Metro optical networks,advanced photonic transceiver architectures,disaggregated optical networks,programmable transceivers,sliceable bandwidth/bitrate variable transceivers,software defined networking},\n volume = {11712},\n id = {494fd163-4e4a-3296-bae6-bf7a4973d900},\n created = {2023-05-29T11:52:27.101Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.101Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Metro area network (MAN) connectivity is rapidly evolving towards a much more dense, complex and diverse scenario to be dynamically addressed with flexible cost-efficient and high-capacity technology and architecture solutions, dealing with an even more open and disaggregated paradigm. In this work, sliceable bandwidth/bitrate variable transceiver (S-BVT) architectures adopting modular approach and suitable photonic technologies (such as VCSEL), enabling to efficiently and dynamically exploit both spectral and spatial dimensions, are discussed, considering design, implementation, cost and flexibility aspects. Recent numerical and experimental results are reported, showing how to enable scalability towards supporting multi-Tb/s connectivity in flexible and dynamic large MAN.},\n bibtype = {inproceedings},\n author = {Svaluto Moreolo, M. and Nadal, L. and Fabrega, J.M. and Vilchez, F.J. and Neumeyr, C. and Gatto, A. and Parolari, P. and Boffi, P.},\n doi = {10.1117/12.2577521},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n Metro area network (MAN) connectivity is rapidly evolving towards a much more dense, complex and diverse scenario to be dynamically addressed with flexible cost-efficient and high-capacity technology and architecture solutions, dealing with an even more open and disaggregated paradigm. In this work, sliceable bandwidth/bitrate variable transceiver (S-BVT) architectures adopting modular approach and suitable photonic technologies (such as VCSEL), enabling to efficiently and dynamically exploit both spectral and spatial dimensions, are discussed, considering design, implementation, cost and flexibility aspects. Recent numerical and experimental results are reported, showing how to enable scalability towards supporting multi-Tb/s connectivity in flexible and dynamic large MAN.\n
\n\n\n\n \n\n \n \n \n \n \n Transmitter and receiver solutions for VCSEL exploitation in access and metro networks.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Rapisarda, M.; Lipparini, F.; Neumeyr, C.; Svaluto Moreolo, M.; and Boffi, P.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 11712, 2021. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Transmitter and receiver solutions for VCSEL exploitation in access and metro networks},\n type = {inproceedings},\n year = {2021},\n keywords = {discrete multitone modulation,metropolitan area network,multi-Tb/s capacty,passive optical networks,vertical cavity surface emitting lasers},\n volume = {11712},\n id = {1ba95757-4073-32a4-b688-cdcf2c185b09},\n created = {2023-05-29T11:52:27.104Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.104Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The high capacity demand, to support broadband services and everything-to-internet connectivity is pushing the limits of both access and metro networks, requiring the adoption of novel strategies for the optical transceiver modules. This represents an opportunity for the adoption in these network scenarios of novel photonic technologies based on single-mode vertical cavity surface emitting lasers (VCSELs) at long wavelengths. On one hand, the access network evolution requires a line rate increase beyond 10 Gb/s, targeting 50 Gb/s propagation in passive optical networks (PONs) over a few tens of kms in standard single mode fiber (SSMF) with simple, cost effective and energy efficient transceivers. On the other hand, the future metropolitan area network (MAN) will need to handle multi-Tb/s traffic in a very dynamic scenario, over variable distances up to hundreds of kms while promoting sustainability, reducing the CapEx and OpEx costs and power consumption. Both needs can be fulfilled by adopting VCSEL direct modulation with multicarrier modulation formats such as discrete multitone (DMT), in combination with distinct transmitter architectures and receiver solutions to support different aggregate capacity requirements and transmission reaches. In any case DMT with bit/power loading enables flexible rate and adaptive distance for metro network applications and link adaptation and PON resource usage optimization for future access networks. In this work, we report our recent results on the adoption of VCSEL technology in both scenarios, with special focus on the receiver and transmitter adopted architectures.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Rapisarda, M. and Lipparini, F. and Neumeyr, C. and Svaluto Moreolo, M. and Boffi, P.},\n doi = {10.1117/12.2579757},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n The high capacity demand, to support broadband services and everything-to-internet connectivity is pushing the limits of both access and metro networks, requiring the adoption of novel strategies for the optical transceiver modules. This represents an opportunity for the adoption in these network scenarios of novel photonic technologies based on single-mode vertical cavity surface emitting lasers (VCSELs) at long wavelengths. On one hand, the access network evolution requires a line rate increase beyond 10 Gb/s, targeting 50 Gb/s propagation in passive optical networks (PONs) over a few tens of kms in standard single mode fiber (SSMF) with simple, cost effective and energy efficient transceivers. On the other hand, the future metropolitan area network (MAN) will need to handle multi-Tb/s traffic in a very dynamic scenario, over variable distances up to hundreds of kms while promoting sustainability, reducing the CapEx and OpEx costs and power consumption. Both needs can be fulfilled by adopting VCSEL direct modulation with multicarrier modulation formats such as discrete multitone (DMT), in combination with distinct transmitter architectures and receiver solutions to support different aggregate capacity requirements and transmission reaches. In any case DMT with bit/power loading enables flexible rate and adaptive distance for metro network applications and link adaptation and PON resource usage optimization for future access networks. In this work, we report our recent results on the adoption of VCSEL technology in both scenarios, with special focus on the receiver and transmitter adopted architectures.\n
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\n \n \n\n \n \n \n \n \n Preliminary assessment of photonic solutions based on C-Band VCSELs for multi-Tb/s metro networks.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Rapisarda, M.; Lipparini, F.; Neumeyr, C.; Moreolo, M.; and Boffi, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2020-July, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Preliminary assessment of photonic solutions based on C-Band VCSELs for multi-Tb/s metro networks},\n type = {inproceedings},\n year = {2020},\n keywords = {Discrete multitone transmission,Metro networks,VCSELs,WSS},\n volume = {2020-July},\n id = {cdb7ff5d-4839-3193-834c-61d591d6a89a},\n created = {2020-10-21T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2020-10-23T05:25:15.052Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2020 IEEE. C-band InP vertical cavity surface emitting laser (VCSEL) exploitation can be appealing also for high-capacity transmission over hundreds of kilometres. Long-wavelength VCSELs can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint by adopting direct modulation (DM) and single sideband (SSB) discrete multitone (DMT) modulation to achieve dense wavelength division multiplexing (WDM) granularity. Due to numerous hops between nodes inside metropolitan area networks the effect of filtering can severely impact the transmission performance. We present preliminary experimental assessments of DM VCSEL sources with multi-carrier modulation formats, for more than 50 Gb/s per-channel transmission to target a metro network including nodes, handling 25-GHz granularity.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Rapisarda, M. and Lipparini, F. and Neumeyr, C. and Moreolo, M.S. and Boffi, P.},\n doi = {10.1109/ICTON51198.2020.9203396},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2020 IEEE. C-band InP vertical cavity surface emitting laser (VCSEL) exploitation can be appealing also for high-capacity transmission over hundreds of kilometres. Long-wavelength VCSELs can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint by adopting direct modulation (DM) and single sideband (SSB) discrete multitone (DMT) modulation to achieve dense wavelength division multiplexing (WDM) granularity. Due to numerous hops between nodes inside metropolitan area networks the effect of filtering can severely impact the transmission performance. We present preliminary experimental assessments of DM VCSEL sources with multi-carrier modulation formats, for more than 50 Gb/s per-channel transmission to target a metro network including nodes, handling 25-GHz granularity.\n
\n\n\n\n \n\n \n \n \n \n \n RSOA-based colorless multilevel transmitter with electrical signal predistortion.\n \n \n \n\n\n \n Totović, A.; Santagiustina, M.; Antonelli, C.; Gvozdić, D.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n Optics Communications, 456. 2020.\n \n\n\n\n
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\n\n\n@article{\n title = {RSOA-based colorless multilevel transmitter with electrical signal predistortion},\n type = {article},\n year = {2020},\n keywords = {Coherent transmission,Colorless,Multilevel modulation,Reflective SOA (RSOA),Semiconductor optical amplifier (SOA)},\n volume = {456},\n id = {8ae43085-0852-3744-9f10-98b22081e7c0},\n created = {2019-10-24T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2021-01-16T00:09:32.486Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2019 Elsevier B.V. In this paper we present the design and a numerical proof-of-concept of an RSOA-based colorless multilevel transmitter, suitable for use in optical network units at user premises. Simple electrical predistortion of the M-QAM modulation signal theoretically allows the transmitter to be operated at up to 4 GBd symbol rate with 16-QAM modulation accounting for the transmission channel impairments and noise at the detection stage, if forward error correction is implemented. We also numerically confirm that 4-QAM operation is possible without the modulation signal predistortion, as long as the constellation is derotated after detection, which can be easily done using digital feed-forward algorithm.},\n bibtype = {article},\n author = {Totović, A. and Santagiustina, M. and Antonelli, C. and Gvozdić, D. and Parolari, P. and Boffi, P.},\n doi = {10.1016/j.optcom.2019.124654},\n journal = {Optics Communications}\n}\n\n © 2019 Elsevier B.V. In this paper we present the design and a numerical proof-of-concept of an RSOA-based colorless multilevel transmitter, suitable for use in optical network units at user premises. Simple electrical predistortion of the M-QAM modulation signal theoretically allows the transmitter to be operated at up to 4 GBd symbol rate with 16-QAM modulation accounting for the transmission channel impairments and noise at the detection stage, if forward error correction is implemented. We also numerically confirm that 4-QAM operation is possible without the modulation signal predistortion, as long as the constellation is derotated after detection, which can be easily done using digital feed-forward algorithm.\n
\n\n\n\n \n\n \n \n \n \n \n Mode-group division multiplexing for provisioning in SDM networks.\n \n \n \n\n\n \n Sambo, N.; Martelli, P.; Parolari, P.; Gatto, A.; Castoldi, P.; and Boffi, P.\n\n\n \n\n\n\n In 2020 European Conference on Optical Communications, ECOC 2020, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Mode-group division multiplexing for provisioning in SDM networks},\n type = {inproceedings},\n year = {2020},\n id = {4d37a208-62c0-3ca2-a652-719904f13e5f},\n created = {2023-05-29T11:52:27.153Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.153Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We introduce the concept of mode-group division multiplexing (MGDM) in SDM-network provisioning. Modes belonging to different groups follow different paths in the network with simplified MIMO detection for the modes within the same group. Simulations show high throughput increase while limiting the complexity of the nodes.},\n bibtype = {inproceedings},\n author = {Sambo, N. and Martelli, P. and Parolari, P. and Gatto, A. and Castoldi, P. and Boffi, P.},\n doi = {10.1109/ECOC48923.2020.9333236},\n booktitle = {2020 European Conference on Optical Communications, ECOC 2020}\n}\n\n We introduce the concept of mode-group division multiplexing (MGDM) in SDM-network provisioning. Modes belonging to different groups follow different paths in the network with simplified MIMO detection for the modes within the same group. Simulations show high throughput increase while limiting the complexity of the nodes.\n
\n\n\n\n \n\n \n \n \n \n \n Flexible transmitters based on directly modulated VCSELs for next-generation 50G passive optical networks.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Neumeyr, C.; and Boffi, P.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 12(10). 2020.\n \n\n\n\n
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\n\n\n@article{\n title = {Flexible transmitters based on directly modulated VCSELs for next-generation 50G passive optical networks},\n type = {article},\n year = {2020},\n volume = {12},\n id = {fa63a934-d418-3e7a-899c-d9357782f39c},\n created = {2023-05-29T11:52:27.155Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.155Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Discrete multitone (DMT) modulation, due to its water-filling nature, is proposed to enable flexibility in passive optical networks (PONs), optimizing the PON resource usage. The use of DMT signals to directly modulate long-wavelength vertical-cavity surface-emitting lasers (VCSELs) can provide energy-efficient transmitters for 50G PONs. First, we present preliminary experimental measures employing both single-sideband and dual-sideband DMT modulation with already available short-cavity VCSELs operating in the third window to study the PON performance as a function of the accumulated chromatic dispersion and of the received power. The experimental results are then compared with simulations, demonstrating the effectiveness of the developed simulation tool. Then we study the performance of DMT-modulated transmitters based on next-generation short-cavity VCSELs with higher bandwidth (up to 20 GHz) operating in the O-band, evaluating their chromatic dispersion resilience. Finally, considering the statistics of a commercially deployed PON, we demonstrate that DMT modulation, providing link adaptation, offers a significant increase in the total aggregated capacity compared to a single-carrier-based fixed-rate PON, optimizing the PON resource usage with respect to the available power budget and the dispersion impairments.},\n bibtype = {article},\n author = {Parolari, P. and Gatto, A. and Neumeyr, C. and Boffi, P.},\n doi = {10.1364/JOCN.391872},\n journal = {Journal of Optical Communications and Networking},\n number = {10}\n}\n\n Discrete multitone (DMT) modulation, due to its water-filling nature, is proposed to enable flexibility in passive optical networks (PONs), optimizing the PON resource usage. The use of DMT signals to directly modulate long-wavelength vertical-cavity surface-emitting lasers (VCSELs) can provide energy-efficient transmitters for 50G PONs. First, we present preliminary experimental measures employing both single-sideband and dual-sideband DMT modulation with already available short-cavity VCSELs operating in the third window to study the PON performance as a function of the accumulated chromatic dispersion and of the received power. The experimental results are then compared with simulations, demonstrating the effectiveness of the developed simulation tool. Then we study the performance of DMT-modulated transmitters based on next-generation short-cavity VCSELs with higher bandwidth (up to 20 GHz) operating in the O-band, evaluating their chromatic dispersion resilience. Finally, considering the statistics of a commercially deployed PON, we demonstrate that DMT modulation, providing link adaptation, offers a significant increase in the total aggregated capacity compared to a single-carrier-based fixed-rate PON, optimizing the PON resource usage with respect to the available power budget and the dispersion impairments.\n
\n\n\n\n \n\n \n \n \n \n \n Next generation 50G PON flexible transmitters based on directly modulated VCSELs.\n \n \n \n\n\n \n Parolari, P.; Boffi, P.; Gatto, A.; and Neumeyr, C.\n\n\n \n\n\n\n In IEEE International Conference on Communications, volume 2020-June, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Next generation 50G PON flexible transmitters based on directly modulated VCSELs},\n type = {inproceedings},\n year = {2020},\n keywords = {DMT,Flexible modulation,Passive optical networks,VCSEL,access},\n volume = {2020-June},\n id = {ed184ef1-5da5-352e-8fa5-2108b220dfdb},\n created = {2023-05-29T11:52:27.203Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.203Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We consider long-wavelength vertical cavity surface emitting lasers (VCSELs) directly modulated with discrete multitone (DMT) signals as a very promising solution for implementing energy-efficient transmitters for 50G passive optical networks (PONs). Two scenarios based on single sideband and dual sideband modulation are taken into account. Preliminary experimentation with already available short-cavity VCSELs operating in the third window is presented to show the PON performance as a function of the accumulated chromatic dispersion and of the received power. Experimental results are also used to validate a simulation tool, which is further used to provide the performance evaluation of transmitters based on next-generation short cavity VCSELs with higher bandwidth (up to 20 GHz), operating in the O band. Thanks to its water-filling nature, DMT is demonstrated to enable PON flexibility: in fact, considering the statistics regarding a commercially deployed PON, a significant increase of the maximum aggregated capacity is provided, optimizing the PON resource usage with respect to the losses and dispersion impairments.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Boffi, P. and Gatto, A. and Neumeyr, C.},\n doi = {10.1109/ICC40277.2020.9149108},\n booktitle = {IEEE International Conference on Communications}\n}\n\n We consider long-wavelength vertical cavity surface emitting lasers (VCSELs) directly modulated with discrete multitone (DMT) signals as a very promising solution for implementing energy-efficient transmitters for 50G passive optical networks (PONs). Two scenarios based on single sideband and dual sideband modulation are taken into account. Preliminary experimentation with already available short-cavity VCSELs operating in the third window is presented to show the PON performance as a function of the accumulated chromatic dispersion and of the received power. Experimental results are also used to validate a simulation tool, which is further used to provide the performance evaluation of transmitters based on next-generation short cavity VCSELs with higher bandwidth (up to 20 GHz), operating in the O band. Thanks to its water-filling nature, DMT is demonstrated to enable PON flexibility: in fact, considering the statistics regarding a commercially deployed PON, a significant increase of the maximum aggregated capacity is provided, optimizing the PON resource usage with respect to the losses and dispersion impairments.\n
\n\n\n\n \n\n \n \n \n \n \n Experimental Assessment of a Programmable VCSEL-Based Photonic System Architecture over a Multi-Hop Path with 19-Core MCF for Future Agile Tb/s Metro Networks.\n \n \n \n\n\n \n Moreolo, M.; Fabrega, J.; Nadal, L.; Martinez, R.; Casellas, R.; Vilchez, J.; Munoz, R.; Vilalta, R.; Gatto, A.; Parolari, P.; Boffi, P.; Neumeyr, C.; Larrabeiti, D.; Otero, G.; and Fernandez-Palacios, J.\n\n\n \n\n\n\n In 2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Experimental Assessment of a Programmable VCSEL-Based Photonic System Architecture over a Multi-Hop Path with 19-Core MCF for Future Agile Tb/s Metro Networks},\n type = {inproceedings},\n year = {2020},\n id = {7250c930-1b17-31a1-9b85-f27a35fb963b},\n created = {2023-05-29T11:52:27.216Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.216Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {An SDN-enabled photonic system adopting VCSEL technology is experimentally analyzed targeting dynamic 5G-supportive MAN. Direct and coherent detection modules are compared and programmability assessed over up to 6-hop 160km HL4-HL2/1 connection including 25km 19-core MCF.},\n bibtype = {inproceedings},\n author = {Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Martinez, R. and Casellas, R. and Vilchez, J. and Munoz, R. and Vilalta, R. and Gatto, A. and Parolari, P. and Boffi, P. and Neumeyr, C. and Larrabeiti, D. and Otero, G. and Fernandez-Palacios, J.P.},\n booktitle = {2020 Optical Fiber Communications Conference and Exhibition, OFC 2020 - Proceedings}\n}\n\n An SDN-enabled photonic system adopting VCSEL technology is experimentally analyzed targeting dynamic 5G-supportive MAN. Direct and coherent detection modules are compared and programmability assessed over up to 6-hop 160km HL4-HL2/1 connection including 25km 19-core MCF.\n
\n\n\n\n \n\n \n \n \n \n \n SOA impact on high-capacity DMT signals in switching/aggregation node for future MAN.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Parolari, P.; Tessema, N.; Calabretta, N.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F185-, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {SOA impact on high-capacity DMT signals in switching/aggregation node for future MAN},\n type = {inproceedings},\n year = {2020},\n volume = {Part F185-},\n id = {d640f760-586d-3481-aa3e-82a519eff711},\n created = {2023-05-29T11:52:27.266Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.266Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The impact of the crossing of SOA-based MAN nodes on DMT high-capacity transmission is experimentally evaluated. We provide an optimization of the saturation levels of the SOAs enabling add/drop functionalities to preserve the transmitted throughput.},\n bibtype = {inproceedings},\n author = {Rapisarda, M. and Gatto, A. and Parolari, P. and Tessema, N. and Calabretta, N. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n The impact of the crossing of SOA-based MAN nodes on DMT high-capacity transmission is experimentally evaluated. We provide an optimization of the saturation levels of the SOAs enabling add/drop functionalities to preserve the transmitted throughput.\n
\n\n\n\n \n\n \n \n \n \n \n Experimental assessment of a programmable VCSEL-based photonic system architecture over a multi-hop path with 19-Core MCF for future agile Tb/s metro networks.\n \n \n \n\n\n \n Svaluto Moreolo, M.; Fabrega, J.; Nadal, L.; Martínez, R.; Casellas, R.; Vílchez, J.; Muñoz, R.; Vilalta, R.; Gatto, A.; Parolari, P.; Boffi, P.; Neumeyr, C.; Larrabeiti, D.; Otero, G.; and Fernández-Palacios, J.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F174-, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Experimental assessment of a programmable VCSEL-based photonic system architecture over a multi-hop path with 19-Core MCF for future agile Tb/s metro networks},\n type = {inproceedings},\n year = {2020},\n volume = {Part F174-},\n id = {0e6df0e0-1917-3495-8981-17f6ff37d958},\n created = {2023-05-29T11:52:27.276Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.276Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {An SDN-enabled photonic system adopting VCSEL technology is experimentally analyzed targeting dynamic 5G-supportive MAN. Direct and coherent detection modules are compared and programmability assessed over up to 6-hop 160km HL4-HL2/1 connection including 25km 19-core MCF.},\n bibtype = {inproceedings},\n author = {Svaluto Moreolo, M. and Fabrega, J.M. and Nadal, L. and Martínez, R. and Casellas, R. and Vílchez, J. and Muñoz, R. and Vilalta, R. and Gatto, A. and Parolari, P. and Boffi, P. and Neumeyr, C. and Larrabeiti, D. and Otero, G. and Fernández-Palacios, J.P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n An SDN-enabled photonic system adopting VCSEL technology is experimentally analyzed targeting dynamic 5G-supportive MAN. Direct and coherent detection modules are compared and programmability assessed over up to 6-hop 160km HL4-HL2/1 connection including 25km 19-core MCF.\n
\n\n\n\n \n\n \n \n \n \n \n Programmable transmission systems using coherent detection enabling multi-Tb/s interfaces for IT-communications convergence in optical networks.\n \n \n \n\n\n \n Fabrega, J.; Svaluto Moreolo, M.; Nadal, L.; Martínez, R.; Neumeyr, C.; Gatto, A.; Parolari, P.; Rapisarda, M.; and Boffi, P.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 11308, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Programmable transmission systems using coherent detection enabling multi-Tb/s interfaces for IT-communications convergence in optical networks},\n type = {inproceedings},\n year = {2020},\n keywords = {Sliceable bandwidth/bitrate variable transceiver (,digital signal processing (DSP),multicarrier modulation,vertical cavity surface emitting laser (VCSEL)},\n volume = {11308},\n id = {41b65d62-2e86-3f79-bee2-53ac3584e896},\n created = {2023-05-29T11:52:27.322Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.322Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The information technologies (ITs)-communications infrastructure convergence is key to future optical networks for achieving an automated orchestration of IT, optical and cloud resources. To cope with this challenge, transmission systems need to be agile, programmable, and capable of transmitting large amounts of data, while covering data center and metropolitan networks. This work addresses transmission solutions using coherent detection combined with either direct or external modulation, with special focus on flexible, high capacity and cost/energy-efficient systems. The proposed technological solutions are evaluated in terms of throughput, and programmability and interaction with the control plane.},\n bibtype = {inproceedings},\n author = {Fabrega, J.M. and Svaluto Moreolo, M. and Nadal, L. and Martínez, R. and Neumeyr, C. and Gatto, A. and Parolari, P. and Rapisarda, M. and Boffi, P.},\n doi = {10.1117/12.2546612},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n The information technologies (ITs)-communications infrastructure convergence is key to future optical networks for achieving an automated orchestration of IT, optical and cloud resources. To cope with this challenge, transmission systems need to be agile, programmable, and capable of transmitting large amounts of data, while covering data center and metropolitan networks. This work addresses transmission solutions using coherent detection combined with either direct or external modulation, with special focus on flexible, high capacity and cost/energy-efficient systems. The proposed technological solutions are evaluated in terms of throughput, and programmability and interaction with the control plane.\n
\n\n\n\n \n\n \n \n \n \n \n Multi-Tb/s sustainable MAN scenario enabled by VCSEL-based innovative technological solutions.\n \n \n \n\n\n \n Boffi, P.; Parolari, P.; Gatto, A.; Rapisarda, M.; Svaluto Moreolo, M.; Nadal, L.; Fabrega, J.; Calabretta, N.; Stabile, R.; Tessema, N.; Larrabeiti, D.; Fernández-Palacios, J.; Otero, G.; Neumeyr, C.; Delrosso, G.; Bhat, S.; Solis-Trapala, K.; and Parladori, G.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 11308, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Multi-Tb/s sustainable MAN scenario enabled by VCSEL-based innovative technological solutions},\n type = {inproceedings},\n year = {2020},\n keywords = {Sliceable bandwidth/bitrate variable transceiver (,discrete multitone (DMT) modulation,metropolitan area network (MAN),photonic technologies,vertical cavity surface emitting laser (VCSEL)},\n volume = {11308},\n id = {82fef04e-0369-3eb4-8e9f-11cbd4b45679},\n created = {2023-05-29T11:52:27.342Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.342Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Innovative photonic solutions designed and developed in the H2020 research project PASSION are presented for the future metropolitan area network (MAN) supporting different aggregated data traffic volumes and operating at heterogenous granularities. System performance evaluated both by simulations and experimentation regarding the proposed vertical cavity surface emitting laser (VCSEL) -based modular sliceable bandwidth/bitrate variable transceiver (S-BVT) are shown in realistic MANs organized by hierarchical levels with the crossing of multiple nodes characterized by new switching/aggregation technologies. The capabilities and challenges of the proposed cost-effective, energy-efficient and reduced footprint technological solutions will be demonstrated to face the request of huge throughput and traffic scalability.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Parolari, P. and Gatto, A. and Rapisarda, M. and Svaluto Moreolo, M. and Nadal, L. and Fabrega, J.M. and Calabretta, N. and Stabile, R. and Tessema, N. and Larrabeiti, D. and Fernández-Palacios, J.P. and Otero, G. and Neumeyr, C. and Delrosso, G. and Bhat, S. and Solis-Trapala, K. and Parladori, G.},\n doi = {10.1117/12.2544931},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n Innovative photonic solutions designed and developed in the H2020 research project PASSION are presented for the future metropolitan area network (MAN) supporting different aggregated data traffic volumes and operating at heterogenous granularities. System performance evaluated both by simulations and experimentation regarding the proposed vertical cavity surface emitting laser (VCSEL) -based modular sliceable bandwidth/bitrate variable transceiver (S-BVT) are shown in realistic MANs organized by hierarchical levels with the crossing of multiple nodes characterized by new switching/aggregation technologies. The capabilities and challenges of the proposed cost-effective, energy-efficient and reduced footprint technological solutions will be demonstrated to face the request of huge throughput and traffic scalability.\n
\n\n\n\n \n\n \n \n \n \n \n Upcoming applications driving the design of next-generation metro area networks: Dealing with 5G backhaul/fronthaul and edge-cloud computing.\n \n \n \n\n\n \n Larrabeiti, D.; Fernández-Palacios, J.; Otero, G.; Svaluto Moreolo, M.; Nadal, L.; Fabrega, J.; Boffi, P.; Gatto, A.; Parolari, P.; Tessema, N.; Calabretta, N.; Stabile, P.; Parladori, G.; and Sestito, V.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 11308, 2020. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Upcoming applications driving the design of next-generation metro area networks: Dealing with 5G backhaul/fronthaul and edge-cloud computing},\n type = {inproceedings},\n year = {2020},\n keywords = {5G,Edge Computing,Fronthaul,MAN,MAN design,Midhaul},\n volume = {11308},\n id = {aa92f076-9e51-39e1-bee8-b916b483d1c8},\n created = {2023-05-29T11:52:27.389Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.389Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {This article provides insight on two of the most relevant applications driving the design of the future MAN: the implementation of 5G by means of C-RAN (Cloud - Radio Area Network) and the deployment of edge computing. The work addresses important questions such as the target latency budget for future MANs, the target bandwidth requirements for 2020-2030 induced by 5G midhaul and fronthaul traffic, and describes how optical and electronics layers can co-operate to meet the QoS targets of C-RAN and edge computing traffic. In the process, we identify the key architectural elements to meet the challenges of these applications in a cost-effective way.},\n bibtype = {inproceedings},\n author = {Larrabeiti, D. and Fernández-Palacios, J.P. and Otero, G. and Svaluto Moreolo, M. and Nadal, L. and Fabrega, J.M. and Boffi, P. and Gatto, A. and Parolari, P. and Tessema, N. and Calabretta, N. and Stabile, P. and Parladori, G. and Sestito, V.},\n doi = {10.1117/12.2545751},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n This article provides insight on two of the most relevant applications driving the design of the future MAN: the implementation of 5G by means of C-RAN (Cloud - Radio Area Network) and the deployment of edge computing. The work addresses important questions such as the target latency budget for future MANs, the target bandwidth requirements for 2020-2030 induced by 5G midhaul and fronthaul traffic, and describes how optical and electronics layers can co-operate to meet the QoS targets of C-RAN and edge computing traffic. In the process, we identify the key architectural elements to meet the challenges of these applications in a cost-effective way.\n
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\n\n\n@inproceedings{\n title = {VCSEL-based sliceable bandwidth/bitrate variable transceivers},\n type = {inproceedings},\n year = {2019},\n keywords = {Adaptive transmission,Future optical metro networks,Multicarrier modulation (DMT/OFDM),Novel photonic technologies,Sliceable bandwidth/bitrate variable transceiver (,Vertical cavity surface emitting lasers (VCSEL)},\n volume = {10946},\n id = {3e15b570-1380-3f6b-bf86-952618c0c9a0},\n created = {2019-07-11T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2020-12-27T23:20:55.469Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2019 SPIE. The use of vertical cavity surface emitting laser (VCSEL) at long wavelengths, especially if characterized by large bandwidth or tunable capability, is appearing as an attractive technology for the implementation of advanced transceivers to be used in optical metro networks at 100G and beyond. In this work, we report recent promising results on the adoption of different types of VCSEL for the sliceable bandwidth/bitrate variable transceiver (S-BVT) design. Special attention will be devoted to technological aspects and challenges, focusing on the added value of exploiting novel photonic technologies for the implementation of costeffective transceivers, suitable for future optical metro networks targeting high capacity and flexibility.},\n bibtype = {inproceedings},\n author = {Moreolo, M.S. and Nadal, L. and Fabrega, J.M. and Vilchez, F.J. and Neumeyr, C. and Gatto, A. and Parolari, P. and Boffi, P.},\n doi = {10.1117/12.2509316},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n © 2019 SPIE. The use of vertical cavity surface emitting laser (VCSEL) at long wavelengths, especially if characterized by large bandwidth or tunable capability, is appearing as an attractive technology for the implementation of advanced transceivers to be used in optical metro networks at 100G and beyond. In this work, we report recent promising results on the adoption of different types of VCSEL for the sliceable bandwidth/bitrate variable transceiver (S-BVT) design. Special attention will be devoted to technological aspects and challenges, focusing on the added value of exploiting novel photonic technologies for the implementation of costeffective transceivers, suitable for future optical metro networks targeting high capacity and flexibility.\n
\n\n\n\n \n\n \n \n \n \n \n Mb4.1-beyond 50 Gb/s directly-modulated long-wavelength vcsels for next-gen access network (invited).\n \n \n \n\n\n \n Gatto, A.; Rapisarda, M.; Parolari, P.; Neumeyr, C.; Martelli, P.; and Boffi, P.\n\n\n \n\n\n\n In IEEE Photonics Society Summer Topical Meeting Series 2019, SUM 2019, 2019. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Mb4.1-beyond 50 Gb/s directly-modulated long-wavelength vcsels for next-gen access network (invited)},\n type = {inproceedings},\n year = {2019},\n keywords = {DMT,SSB,Vertical cavity surface emitting laser,direct modulation,optical access networks},\n id = {b2778ed9-c36c-3e3b-9651-65e2739ecab4},\n created = {2019-09-10T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2021-01-09T04:04:35.053Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2019 IEEE. The employment of long-wavelength directly-modulated VCSELs for applications in next-generation access networks is proposed. Suitable simulations are shown in case of DMT modulation and SSB filtering, demonstrating the capabilities of LW-VCSEL for future 50-Gb/s access networks.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Rapisarda, M. and Parolari, P. and Neumeyr, C. and Martelli, P. and Boffi, P.},\n doi = {10.1109/PHOSST.2019.8795016},\n booktitle = {IEEE Photonics Society Summer Topical Meeting Series 2019, SUM 2019}\n}\n\n © 2019 IEEE. The employment of long-wavelength directly-modulated VCSELs for applications in next-generation access networks is proposed. Suitable simulations are shown in case of DMT modulation and SSB filtering, demonstrating the capabilities of LW-VCSEL for future 50-Gb/s access networks.\n
\n\n\n\n \n\n \n \n \n \n \n Spectrum/Space Switching and Multi-Terabit Transmission in Agile Optical Metro Networks.\n \n \n \n\n\n \n Moreolo, M.; Martinez, R.; Nadal, L.; Fabrega, J.; Tessema, N.; Calabretta, N.; Stabile, R.; Parolari, P.; Gatto, A.; Boffi, P.; Otero, G.; Larrabeiti, D.; Hernandez, J.; Reviriego, P.; Fernandez-Palacios, J.; Lopez, V.; Delrosso, G.; Neumeyr, C.; Solis-Trapala, K.; Parladori, G.; and Gasparini, G.\n\n\n \n\n\n\n In OECC/PSC 2019 - 24th OptoElectronics and Communications Conference/International Conference Photonics in Switching and Computing 2019, 2019. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Spectrum/Space Switching and Multi-Terabit Transmission in Agile Optical Metro Networks},\n type = {inproceedings},\n year = {2019},\n keywords = {Architectures and Network Integrations,Switching Systems},\n id = {79dbf448-f1ae-34e6-ad2e-acc571424292},\n created = {2019-09-25T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2021-01-11T11:20:49.198Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2019 The Institute of Electronics, Information and Communication Engineers (IEICE). An SDN-enabled modular photonic system architecture, including VCSEL-based bandwidth/bitrate variable transceivers, for multi-terabit capacity transmission and agile spectrum/space switching in optical metro networks is presented, providing the proposed technological solutions, programmability aspects and preliminary assessment.},\n bibtype = {inproceedings},\n author = {Moreolo, M.S. and Martinez, R. and Nadal, L. and Fabrega, J.M. and Tessema, N. and Calabretta, N. and Stabile, R. and Parolari, P. and Gatto, A. and Boffi, P. and Otero, G. and Larrabeiti, D. and Hernandez, J.A. and Reviriego, P. and Fernandez-Palacios, J.P. and Lopez, V. and Delrosso, G. and Neumeyr, C. and Solis-Trapala, K. and Parladori, G. and Gasparini, G.},\n doi = {10.23919/PS.2019.8818018},\n booktitle = {OECC/PSC 2019 - 24th OptoElectronics and Communications Conference/International Conference Photonics in Switching and Computing 2019}\n}\n\n © 2019 The Institute of Electronics, Information and Communication Engineers (IEICE). An SDN-enabled modular photonic system architecture, including VCSEL-based bandwidth/bitrate variable transceivers, for multi-terabit capacity transmission and agile spectrum/space switching in optical metro networks is presented, providing the proposed technological solutions, programmability aspects and preliminary assessment.\n
\n\n\n\n \n\n \n \n \n \n \n Effect of filtering in dense WDM metro networks adopting VCSEL-based multi-Tb/s transmitters.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Rapisarda, M.; Neumeyr, C.; Moreolo, M.; Fabrega, J.; Nadal, L.; and Boffi, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2019-July, 2019. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Effect of filtering in dense WDM metro networks adopting VCSEL-based multi-Tb/s transmitters},\n type = {inproceedings},\n year = {2019},\n keywords = {Discrete multitone transmission,Metro networks,VCSELs,WSS},\n volume = {2019-July},\n id = {975c3ef4-ff1b-3bcb-abd2-596c5bb5d13a},\n created = {2019-10-17T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2021-01-15T05:49:43.747Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2019 IEEE. Long-wavelength vertical cavity surface emitting lasers (VCSELs) can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint for very-high capacity metropolitan area systems. Multi-Tb/s transmitter modules with fine wavelength division multiplexing (WDM) granularity can be obtained adopting direct modulation (DM) with advanced modulation formats, such as discrete multitone (DMT), and aggregating multiple DM-VCSELs emitting in the C-band with WDM multiplexers in SOI chips. Due to numerous hops between nodes inside metropolitan area networks the effect of filtering can severely impact the transmission performance; we evaluate the transported capacity in function of nodes number taking into account the actual VCSEL parameters and simplified coherent detection.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Rapisarda, M. and Neumeyr, C. and Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Boffi, P.},\n doi = {10.1109/ICTON.2019.8840401},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2019 IEEE. Long-wavelength vertical cavity surface emitting lasers (VCSELs) can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint for very-high capacity metropolitan area systems. Multi-Tb/s transmitter modules with fine wavelength division multiplexing (WDM) granularity can be obtained adopting direct modulation (DM) with advanced modulation formats, such as discrete multitone (DMT), and aggregating multiple DM-VCSELs emitting in the C-band with WDM multiplexers in SOI chips. Due to numerous hops between nodes inside metropolitan area networks the effect of filtering can severely impact the transmission performance; we evaluate the transported capacity in function of nodes number taking into account the actual VCSEL parameters and simplified coherent detection.\n
\n\n\n\n \n\n \n \n \n \n \n Disruptive photonic technologies for the future sustainable high-capacity metro network.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Rapisarda, M.; Neumeyr, C.; Bhat, S.; Delrosso, G.; Moreolo, M.; Fabrega, J.; Nadal, L.; and Boffi, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2019-July, 2019. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Disruptive photonic technologies for the future sustainable high-capacity metro network},\n type = {inproceedings},\n year = {2019},\n keywords = {DMT,Metro networks,Optical communications,S-BVT,VCSEL},\n volume = {2019-July},\n id = {0bcd3002-2e59-316f-af1d-2173a8aec722},\n created = {2019-10-17T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2021-01-15T10:15:40.105Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2019 IEEE. An original technological solution based on the exploitation of long-wavelength VCSELs directly-modulated with multicarrier modulation formats is proposed to implement multi-Tb/s transceivers for the next-generation metropolitan area network. The modular approach conceived for the design and realization of the transmitter guarantees scalability and low cost, low power consumption and reduced footprint.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Rapisarda, M. and Neumeyr, C. and Bhat, S. and Delrosso, G. and Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Boffi, P.},\n doi = {10.1109/ICTON.2019.8840237},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2019 IEEE. An original technological solution based on the exploitation of long-wavelength VCSELs directly-modulated with multicarrier modulation formats is proposed to implement multi-Tb/s transceivers for the next-generation metropolitan area network. The modular approach conceived for the design and realization of the transmitter guarantees scalability and low cost, low power consumption and reduced footprint.\n
\n\n\n\n \n\n \n \n \n \n \n Discrete Multitone Modulation for Short-Reach Mode Division Multiplexing Transmission.\n \n \n \n\n\n \n Gatto, A.; Rapisarda, M.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n Journal of Lightwave Technology, 37(20). 2019.\n \n\n\n\n
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\n\n\n@article{\n title = {Discrete Multitone Modulation for Short-Reach Mode Division Multiplexing Transmission},\n type = {article},\n year = {2019},\n keywords = {Cross-talk,discrete multitone modulation,mode division multiplexing,optical fiber communication,spatial division multiplexing},\n volume = {37},\n id = {3cedb4a4-6812-3420-9693-c80013d95f8a},\n created = {2019-10-17T23:59:00.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2021-01-15T11:07:08.833Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2019 IEEE. Spatial division multiplexing (SDM) can support the capacity demand increase in short-range optical link, but the communication is affected by the intermodal crosstalk. In order to target a low-cost energy-efficient solution, we propose to exploit direct modulation and direct detection without MIMO post-processing in a mode division multiplexed (MDM) system. We theoretically analyze the frequency distribution of the crosstalk contributions taking into account that directly modulated sources at the same nominal wavelength are actually characterized by a certain frequency shift. Our model demonstrates that this shift originates a non-uniform beating noise in the frequency domain due to the intermodal crosstalk. We propose to exploit discrete multitone modulation and a guard band in the multicarrier spectrum to cope with the non-uniform crosstalk issue for typical crosstalk values due to present commercial multi-plane light conversion MUX/DEMUX devices and propagation in few few-mode fiber (FMF) kilometers. The model is validated by comparing simulations and experimental results in the case of a 2-mode MDM system. We demonstrate in a pure SDM scenario that, with respect to single mode transmission, the capacity can be increased of 2.3 times in a 10-km FMF link with 4-modes exploiting direct detection, limited-bandwidth directly modulated lasers and commercial mode MUX/DEMUXs.},\n bibtype = {article},\n author = {Gatto, A. and Rapisarda, M. and Parolari, P. and Boffi, P.},\n doi = {10.1109/JLT.2019.2929829},\n journal = {Journal of Lightwave Technology},\n number = {20}\n}\n\n © 2019 IEEE. Spatial division multiplexing (SDM) can support the capacity demand increase in short-range optical link, but the communication is affected by the intermodal crosstalk. In order to target a low-cost energy-efficient solution, we propose to exploit direct modulation and direct detection without MIMO post-processing in a mode division multiplexed (MDM) system. We theoretically analyze the frequency distribution of the crosstalk contributions taking into account that directly modulated sources at the same nominal wavelength are actually characterized by a certain frequency shift. Our model demonstrates that this shift originates a non-uniform beating noise in the frequency domain due to the intermodal crosstalk. We propose to exploit discrete multitone modulation and a guard band in the multicarrier spectrum to cope with the non-uniform crosstalk issue for typical crosstalk values due to present commercial multi-plane light conversion MUX/DEMUX devices and propagation in few few-mode fiber (FMF) kilometers. The model is validated by comparing simulations and experimental results in the case of a 2-mode MDM system. We demonstrate in a pure SDM scenario that, with respect to single mode transmission, the capacity can be increased of 2.3 times in a 10-km FMF link with 4-modes exploiting direct detection, limited-bandwidth directly modulated lasers and commercial mode MUX/DEMUXs.\n
\n\n\n\n \n\n \n \n \n \n \n VCSEL technologies for high-capacity dense WDM networks.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Martelli, P.; Parolari, P.; Neumeyr, C.; Moreolo, M.; Fabrega, J.; Nadal, L.; and Boffi, P.\n\n\n \n\n\n\n In 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, 2019. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {VCSEL technologies for high-capacity dense WDM networks},\n type = {inproceedings},\n year = {2019},\n id = {a072c9c9-540a-39fc-9155-a0526a88fcf1},\n created = {2023-05-29T11:52:27.405Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.405Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Long-wavelength vertical cavity surface emitting laser (VCSEL) technologies can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint for very-high capacity metropolitan area systems. Exploiting direct modulation (DM) and advanced modulation formats, such as discrete multitone (DMT), and aggregating multiple DM-VCSELs emitting in the C-band with dense wavelength division multiplexers (WDM) in SOI chips allows to achieve multi-Tb/s transmitter module with 25 GHz granularity [1].},\n bibtype = {inproceedings},\n author = {Rapisarda, M. and Gatto, A. and Martelli, P. and Parolari, P. and Neumeyr, C. and Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Boffi, P.},\n doi = {10.1109/CLEOE-EQEC.2019.8872483},\n booktitle = {2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019}\n}\n\n Long-wavelength vertical cavity surface emitting laser (VCSEL) technologies can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint for very-high capacity metropolitan area systems. Exploiting direct modulation (DM) and advanced modulation formats, such as discrete multitone (DMT), and aggregating multiple DM-VCSELs emitting in the C-band with dense wavelength division multiplexers (WDM) in SOI chips allows to achieve multi-Tb/s transmitter module with 25 GHz granularity [1].\n
\n\n\n\n \n\n \n \n \n \n \n VCSEL technologies for high-capacity dense WDM networks.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Martelli, P.; Parolari, P.; Neumeyr, C.; Moreolo, M.; Fabrega, J.; Nadal, L.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F140-, 2019. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {VCSEL technologies for high-capacity dense WDM networks},\n type = {inproceedings},\n year = {2019},\n volume = {Part F140-},\n id = {fb8761cc-bea6-3828-9ae6-1cf508e41484},\n created = {2023-05-29T11:52:27.446Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.446Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Long-wavelength vertical cavity surface emitting laser (VCSEL) technologies can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint for very-high capacity metropolitan area systems. Exploiting direct modulation (DM) and advanced modulation formats, such as discrete multitone (DMT), and aggregating multiple DM-VCSELs emitting in the C-band with dense wavelength division multiplexers (WDM) in SOI chips allows to achieve multi-Tb/s transmitter module with 25 GHz granularity [1].},\n bibtype = {inproceedings},\n author = {Rapisarda, M. and Gatto, A. and Martelli, P. and Parolari, P. and Neumeyr, C. and Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Long-wavelength vertical cavity surface emitting laser (VCSEL) technologies can represent an alternative solution for the development of transmitters with reduced cost, power consumption and footprint for very-high capacity metropolitan area systems. Exploiting direct modulation (DM) and advanced modulation formats, such as discrete multitone (DMT), and aggregating multiple DM-VCSELs emitting in the C-band with dense wavelength division multiplexers (WDM) in SOI chips allows to achieve multi-Tb/s transmitter module with 25 GHz granularity [1].\n
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\n \n \n\n \n \n \n \n \n FDM and DMT performance comparison in high capacity point-to-point fibre links for intra/inter-datacentre connections.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n Optical Fiber Technology, 42. 2018.\n \n\n\n\n
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\n\n\n@article{\n title = {FDM and DMT performance comparison in high capacity point-to-point fibre links for intra/inter-datacentre connections},\n type = {article},\n year = {2018},\n keywords = {DMT,FDM,Fibre optics communications,VCSEL},\n volume = {42},\n id = {5cd88c67-98b8-387d-a616-c34a830cc5de},\n created = {2018-03-25T11:00:56.470Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2018-03-25T11:00:56.470Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2018 Elsevier Inc. Frequency division multiplexing (FDM) is attractive to achieve high capacities in multiple access networks characterized by direct modulation and direct detection. In this paper we take into account point-to-point intra- and inter-datacenter connections to understand the performance of FDM operation compared with the ones achievable with standard multiple carrier modulation approach based on discrete multitone (DMT). DMT and FDM allow to match the non-uniform and bandwidth-limited response of the system under test, associated with the employment of low-cost directly-modulated sources, such as VCSELs with high-frequency chirp, and with fibre-propagation in presence of chromatic dispersion. While for very short distances typical of intra-datacentre communications, the huge number of DMT subcarriers permits to increase the transported capacity with respect to the FDM employment, in case of few tens-km reaches typical of inter-datacentre connections, the capabilities of FDM are more evident, providing system performance similar to the case of DMT application.},\n bibtype = {article},\n author = {Gatto, A. and Parolari, P. and Boffi, P.},\n doi = {10.1016/j.yofte.2018.02.021},\n journal = {Optical Fiber Technology}\n}\n\n © 2018 Elsevier Inc. Frequency division multiplexing (FDM) is attractive to achieve high capacities in multiple access networks characterized by direct modulation and direct detection. In this paper we take into account point-to-point intra- and inter-datacenter connections to understand the performance of FDM operation compared with the ones achievable with standard multiple carrier modulation approach based on discrete multitone (DMT). DMT and FDM allow to match the non-uniform and bandwidth-limited response of the system under test, associated with the employment of low-cost directly-modulated sources, such as VCSELs with high-frequency chirp, and with fibre-propagation in presence of chromatic dispersion. While for very short distances typical of intra-datacentre communications, the huge number of DMT subcarriers permits to increase the transported capacity with respect to the FDM employment, in case of few tens-km reaches typical of inter-datacentre connections, the capabilities of FDM are more evident, providing system performance similar to the case of DMT application.\n
\n\n\n\n \n\n \n \n \n \n \n Modular SDN-enabled S-BVT adopting widely tunable MEMS VCSEL for flexible/elastic optical metro networks.\n \n \n \n\n\n \n Svaluto Moreolo, M.; Nadal, L.; Fabrega, J.; Vilchez, F.; Casellas, R.; Muñoz, R.; Neumeyr, C.; Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F84-O, 2018. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Modular SDN-enabled S-BVT adopting widely tunable MEMS VCSEL for flexible/elastic optical metro networks},\n type = {inproceedings},\n year = {2018},\n volume = {Part F84-O},\n id = {fc6af0b0-ec2e-3dfc-823c-663a04a3e373},\n created = {2018-05-28T22:49:58.931Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2018-05-28T22:49:58.931Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© OSA 2018. We propose an SDN-enabled S-BVT adopting directly-modulated tunable VCSEL with direct-detection for optical metro networks and spectrum defragmentation. We experimentally assess it over different network paths up to 185km and in presence of adjacent slices.},\n bibtype = {inproceedings},\n author = {Svaluto Moreolo, M. and Nadal, L. and Fabrega, J.M. and Vilchez, F.J. and Casellas, R. and Muñoz, R. and Neumeyr, C. and Gatto, A. and Parolari, P. and Boffi, P.},\n doi = {10.1364/OFC.2018.M1A.7},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n © OSA 2018. We propose an SDN-enabled S-BVT adopting directly-modulated tunable VCSEL with direct-detection for optical metro networks and spectrum defragmentation. We experimentally assess it over different network paths up to 185km and in presence of adjacent slices.\n
\n\n\n\n \n\n \n \n \n \n \n Beyond 25 Gb/s directly-modulated widely tunable VCSEL for Next Generation access network.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Neumeyr, C.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F84-O, 2018. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 2 downloads\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Beyond 25 Gb/s directly-modulated widely tunable VCSEL for Next Generation access network},\n type = {inproceedings},\n year = {2018},\n volume = {Part F84-O},\n id = {e2342dc5-4da9-3c2b-b259-f45507d87cce},\n created = {2018-05-30T11:16:18.169Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2018-05-30T11:16:18.169Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© OSA 2018. We demonstrate capacities beyond 25Gb/s up to 40 km in the whole C-band range without any dispersion compensation by DMT direct modulation and direct detection exploiting widely tuneable MEMS-VCSELs for future low-cost high-capacity access networks.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Neumeyr, C. and Boffi, P.},\n doi = {10.1364/OFC.2018.Th1E.2},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n © OSA 2018. We demonstrate capacities beyond 25Gb/s up to 40 km in the whole C-band range without any dispersion compensation by DMT direct modulation and direct detection exploiting widely tuneable MEMS-VCSELs for future low-cost high-capacity access networks.\n
\n\n\n\n \n\n \n \n \n \n \n Limitations of intra datacentre communications exploiting optical PCIe interconnections.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Brunero, M.; Costa, V.; Meani, C.; Moscheni, E.; Fabbro, G.; and Boffi, P.\n\n\n \n\n\n\n Optical Fiber Technology, 45. 2018.\n \n\n\n\n
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\n\n\n@article{\n title = {Limitations of intra datacentre communications exploiting optical PCIe interconnections},\n type = {article},\n year = {2018},\n keywords = {Data communication,Fibre optics communications,Optical communication equipment,Optical interconnects,PCIe,Protocols},\n volume = {45},\n id = {2e39bab4-8553-361b-a91f-469b38c808ba},\n created = {2018-06-05T19:52:40.774Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2018-06-05T19:52:40.774Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2018 Elsevier Inc. To support the huge intra-datacentre traffic growth, network architectures based on Peripheral Component Interconnect Express (PCIe) communication protocol have been proposed in alternative to Ethernet ones. To cover the entire datacentre area and to promote the recently released PCIe Gen4, operating at 16 Gb/s, the employment of optical fibre communication is mandatory. We demonstrate, by physical layer measurements, the compliance to the PCIe standard in terms of eye diagram mask and jitter for both Gen3 and Gen4 optical PCIe links, considering up to 10-km standard single mode fibre (SMF) propagation and transmission in the second window of optical communications. On the other hand, we perform an analysis to evidence that the maximum fibre reach is limited by the propagation latency due to the PCIe protocol ACK/NACK operation. For 1-lane PCIe Gen3 link we experimentally verify, through a protocol analysis, the reach limits expected by our evaluation; moreover, for longer distances, we detect retransmissions which reduce the actual transmitted capacity, without error introduction.},\n bibtype = {article},\n author = {Parolari, P. and Gatto, A. and Brunero, M. and Costa, V. and Meani, C. and Moscheni, E. and Fabbro, G. and Boffi, P.},\n doi = {10.1016/j.yofte.2018.05.013},\n journal = {Optical Fiber Technology}\n}\n\n © 2018 Elsevier Inc. To support the huge intra-datacentre traffic growth, network architectures based on Peripheral Component Interconnect Express (PCIe) communication protocol have been proposed in alternative to Ethernet ones. To cover the entire datacentre area and to promote the recently released PCIe Gen4, operating at 16 Gb/s, the employment of optical fibre communication is mandatory. We demonstrate, by physical layer measurements, the compliance to the PCIe standard in terms of eye diagram mask and jitter for both Gen3 and Gen4 optical PCIe links, considering up to 10-km standard single mode fibre (SMF) propagation and transmission in the second window of optical communications. On the other hand, we perform an analysis to evidence that the maximum fibre reach is limited by the propagation latency due to the PCIe protocol ACK/NACK operation. For 1-lane PCIe Gen3 link we experimentally verify, through a protocol analysis, the reach limits expected by our evaluation; moreover, for longer distances, we detect retransmissions which reduce the actual transmitted capacity, without error introduction.\n
\n\n\n\n \n\n \n \n \n \n \n Optical multilevel pulsewidth modulation for analog mobile fronthaul.\n \n \n \n\n\n \n Combi, L.; Gatto, A.; Boffi, P.; Spagnolini, U.; and Parolari, P.\n\n\n \n\n\n\n Photonics, 5(4). 2018.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Optical multilevel pulsewidth modulation for analog mobile fronthaul},\n type = {article},\n year = {2018},\n keywords = {Analog fronthauling,C-RAN,Multilevel pulse width modulation,Pulse width modulation,WDM-PON},\n volume = {5},\n id = {78882eaf-5313-33ed-a84f-e37f0805c1fc},\n created = {2023-05-29T11:52:27.453Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.453Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The evolution of radio access networks is towards a centralized architecture (C-RAN), with massive antenna deployments and large radio-frequency bandwidths. In the next future, traditional optical transport technologies based on digital radio over fiber will no longer be able to support the mobile fronthaul traffic connecting antennas hosted at remote radio units and centralized baseband units. Analog radio over fiber can be selected to support the mobile fronthaul (MFH) network and, in particular, pulse width modulation (PWM) is a viable alternative for analog signal transport. In order to increase the MFH spectral efficiency, we propose to exploit multilevel PWM (M-PWM) in a wavelength division multiplexing-passive optical network (WDM-PON) network, comparing its performance with a conventional 2-level PWM solution. Experimental results show successful transmission over 7.5-km standard single mode fiber (SSMF) of up to 16 aggregated LTE-like 20-MHz signals with 64-QAM on each subcarrier, while up to eight aggregated LTE-like 20-MHz signals with 256-QAM could be supported. M-PWM thus allows either using higher order modulation formats or aggregating a higher number of LTE channels.},\n bibtype = {article},\n author = {Combi, L. and Gatto, A. and Boffi, P. and Spagnolini, U. and Parolari, P.},\n doi = {10.3390/photonics5040049},\n journal = {Photonics},\n number = {4}\n}\n\n The evolution of radio access networks is towards a centralized architecture (C-RAN), with massive antenna deployments and large radio-frequency bandwidths. In the next future, traditional optical transport technologies based on digital radio over fiber will no longer be able to support the mobile fronthaul traffic connecting antennas hosted at remote radio units and centralized baseband units. Analog radio over fiber can be selected to support the mobile fronthaul (MFH) network and, in particular, pulse width modulation (PWM) is a viable alternative for analog signal transport. In order to increase the MFH spectral efficiency, we propose to exploit multilevel PWM (M-PWM) in a wavelength division multiplexing-passive optical network (WDM-PON) network, comparing its performance with a conventional 2-level PWM solution. Experimental results show successful transmission over 7.5-km standard single mode fiber (SSMF) of up to 16 aggregated LTE-like 20-MHz signals with 64-QAM on each subcarrier, while up to eight aggregated LTE-like 20-MHz signals with 256-QAM could be supported. M-PWM thus allows either using higher order modulation formats or aggregating a higher number of LTE channels.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of chirp in high-capacity optical metro networks employing directly-modulated VCSELs.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Martelli, P.; Parolari, P.; Neumeyr, C.; Moreolo, M.; Fabrega, J.; Nadal, L.; and Boffi, P.\n\n\n \n\n\n\n Photonics, 5(4). 2018.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Impact of chirp in high-capacity optical metro networks employing directly-modulated VCSELs},\n type = {article},\n year = {2018},\n keywords = {Direct modulation,Discrete multitone,Metro networks,Optical communications,Vertical cavity surface emitting lasers},\n volume = {5},\n id = {b3445df9-0521-343f-9a1d-6838dd8d4b06},\n created = {2023-05-29T11:52:27.501Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.501Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Directly modulated long-wavelength vertical cavity surface emitting lasers (VCSELs) are considered for the implementation of sliceable bandwidth/bitrate variable transceivers for very high capacity transmission (higher than 50 Gb/s per wavelength) in metropolitan area systems characterized by reduced cost, power consumption, and footprint. The impact of the frequency chirp measured for InP VCSELs with different kinds of design (high-bandwidth very short cavity and widely-tunable with micro electro-mechanical systems (MEMS) top mirror) is analyzed in case of discrete multitone (DMT) direct modulation in combination with 25-GHz wavelength selective switch (WSS) filtering. The maximum transmitted capacity for both dual side- and single side-band DMT modulation is evaluated as a function of the number of crossed nodes in a mesh metro network, comparing VCSEL based transmitters performance also with the case of external electro-absorption modulator use. Finally, the maximum reach achieved based on the received optical signal to noise ratio (OSNR) and the fiber span length is discussed. The results confirm the possibility to use directly-modulated long-wavelength VCSELs for the realization of sliceable bandwidth/bitrate variable transmitters targeting 50-Gb/s capacity per polarization, also in the presence of 5 crossed WSSs for reaches of hundreds of kilometers in multi-span Erbium-doped fiber amplified (EDFA) metro links supported by coherent detection.},\n bibtype = {article},\n author = {Rapisarda, M. and Gatto, A. and Martelli, P. and Parolari, P. and Neumeyr, C. and Moreolo, M.S. and Fabrega, J.M. and Nadal, L. and Boffi, P.},\n doi = {10.3390/photonics5040051},\n journal = {Photonics},\n number = {4}\n}\n\n Directly modulated long-wavelength vertical cavity surface emitting lasers (VCSELs) are considered for the implementation of sliceable bandwidth/bitrate variable transceivers for very high capacity transmission (higher than 50 Gb/s per wavelength) in metropolitan area systems characterized by reduced cost, power consumption, and footprint. The impact of the frequency chirp measured for InP VCSELs with different kinds of design (high-bandwidth very short cavity and widely-tunable with micro electro-mechanical systems (MEMS) top mirror) is analyzed in case of discrete multitone (DMT) direct modulation in combination with 25-GHz wavelength selective switch (WSS) filtering. The maximum transmitted capacity for both dual side- and single side-band DMT modulation is evaluated as a function of the number of crossed nodes in a mesh metro network, comparing VCSEL based transmitters performance also with the case of external electro-absorption modulator use. Finally, the maximum reach achieved based on the received optical signal to noise ratio (OSNR) and the fiber span length is discussed. The results confirm the possibility to use directly-modulated long-wavelength VCSELs for the realization of sliceable bandwidth/bitrate variable transmitters targeting 50-Gb/s capacity per polarization, also in the presence of 5 crossed WSSs for reaches of hundreds of kilometers in multi-span Erbium-doped fiber amplified (EDFA) metro links supported by coherent detection.\n
\n\n\n\n \n\n \n \n \n \n \n Long Wavelength VCSELs Exploitation for Low-Cost and Low-Power Consumption Metro and Access Networks.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; and Boffi, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2018-July, 2018. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Long Wavelength VCSELs Exploitation for Low-Cost and Low-Power Consumption Metro and Access Networks},\n type = {inproceedings},\n year = {2018},\n keywords = {VCSELs,access networks,discrete multitone transmission,metro networks},\n volume = {2018-July},\n id = {06f18ae0-9f8a-3292-81cd-cc6344cb1e0c},\n created = {2023-05-29T11:52:27.504Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.504Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Long wavelength VCSELs are demonstrated to be able to support metro and access networks in order to achieve low-cost and low-power consumption transceivers. In particular, the exploitation of discrete multitone (DMT) direct modulation allows to achieve high transmission capacities and the availability of widely tuneable MEMS-VCSELs to sustain agility, reconfigurability and colourless features of networks.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Boffi, P.},\n doi = {10.1109/ICTON.2018.8473780},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n Long wavelength VCSELs are demonstrated to be able to support metro and access networks in order to achieve low-cost and low-power consumption transceivers. In particular, the exploitation of discrete multitone (DMT) direct modulation allows to achieve high transmission capacities and the availability of widely tuneable MEMS-VCSELs to sustain agility, reconfigurability and colourless features of networks.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of Crosstalk in SDM Short-Reach Systems in Presence of Multicarrier Transmission.\n \n \n \n\n\n \n Rapisarda, M.; Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2018-July, 2018. \n \n\n\n\n
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\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of Crosstalk in SDM Short-Reach Systems in Presence of Multicarrier Transmission},\n type = {inproceedings},\n year = {2018},\n keywords = {DMT,few-mode fiber,multi-core fiber,optical communications,space-division multiplexing},\n volume = {2018-July},\n id = {d69ad744-da70-31d9-825e-5ad0af8c8c0f},\n created = {2023-05-29T11:52:27.555Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.555Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The effect of the coherent crosstalk in space-division multiplexed (SDM) optical systems is investigated both with simulations and experimentally. Short-reach links based on direct detection are taken into account with multi-subcarrier modulated signals propagating in few-mode fibers or in multi-core fibers. The limitations induced by the signal beating among the different mode/core channels is evaluated. Countermeasures are proposed, also with suitable experimentation.},\n bibtype = {inproceedings},\n author = {Rapisarda, M. and Gatto, A. and Parolari, P. and Boffi, P.},\n doi = {10.1109/ICTON.2018.8473714},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n The effect of the coherent crosstalk in space-division multiplexed (SDM) optical systems is investigated both with simulations and experimentally. Short-reach links based on direct detection are taken into account with multi-subcarrier modulated signals propagating in few-mode fibers or in multi-core fibers. The limitations induced by the signal beating among the different mode/core channels is evaluated. Countermeasures are proposed, also with suitable experimentation.\n
\n\n\n\n \n\n \n \n \n \n \n VCSEL-based communications for metro and access networks.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Martelli, P.; and Boffi, P.\n\n\n \n\n\n\n In Proceedings of the 2018 Photonics in Switching and Computing, PSC 2018, 2018. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {VCSEL-based communications for metro and access networks},\n type = {inproceedings},\n year = {2018},\n keywords = {Vertical cavity surface emitting laser,direct modulation,metro networks,passive optical networks},\n id = {cdf5b68c-6bed-32e3-8536-28c460816407},\n created = {2023-05-29T11:52:27.559Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.559Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {The capabilities of long-wavelength directly-modulated VCSELs for applications in sustainable metro and access networks are reported. 25-Gb/s transmission is demonstrated thanks to asymmetrical filtering and Kramers-Kronig receiver for passive optical networks, while VCSEL exploitation together with coherent detection in metro network is envisaged.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Martelli, P. and Boffi, P.},\n doi = {10.1109/PS.2018.8751367},\n booktitle = {Proceedings of the 2018 Photonics in Switching and Computing, PSC 2018}\n}\n\n The capabilities of long-wavelength directly-modulated VCSELs for applications in sustainable metro and access networks are reported. 25-Gb/s transmission is demonstrated thanks to asymmetrical filtering and Kramers-Kronig receiver for passive optical networks, while VCSEL exploitation together with coherent detection in metro network is envisaged.\n
\n\n\n\n \n\n \n \n \n \n \n MDM based on photonic lanterns supported by DMT for MIMO-free short-reach systems.\n \n \n \n\n\n \n Al Chalabi, S.; Rapisarda, M.; Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In IET Conference Publications, volume 2018, 2018. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {MDM based on photonic lanterns supported by DMT for MIMO-free short-reach systems},\n type = {inproceedings},\n year = {2018},\n keywords = {DMT modulation,Mode-division multiplexing,Photonics lanterns,Space-division multiplexing},\n volume = {2018},\n issue = {CP748},\n id = {00f5a7a6-82e3-313f-90ee-a89334483f86},\n created = {2023-05-29T11:52:27.605Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.605Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {MDM exploiting photonic lanterns (PLs) is experimented to demonstrate a MIMO-free solution for short-reach fibre links. Commercial PLs have been characterized to evaluate the crosstalk between the channels, induced by the mode coupling. Discrete multitone (DMT) modulation is proposed to cope with actual PLs weak mode selectivity. DMT in fact allows to maximize the transported capacity according to the intermodal crosstalk introduced in the MDM short reach system. Finally, a proper selection of the propagating channels allowed to experimentally demonstrate an increased capacity up to 69%.},\n bibtype = {inproceedings},\n author = {Al Chalabi, S. and Rapisarda, M. and Gatto, A. and Parolari, P. and Boffi, P.},\n booktitle = {IET Conference Publications}\n}\n\n MDM exploiting photonic lanterns (PLs) is experimented to demonstrate a MIMO-free solution for short-reach fibre links. Commercial PLs have been characterized to evaluate the crosstalk between the channels, induced by the mode coupling. Discrete multitone (DMT) modulation is proposed to cope with actual PLs weak mode selectivity. DMT in fact allows to maximize the transported capacity according to the intermodal crosstalk introduced in the MDM short reach system. Finally, a proper selection of the propagating channels allowed to experimentally demonstrate an increased capacity up to 69%.\n
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\n \n \n\n \n \n \n \n \n Frequency division multiplexing for very high capacity transmission in bandwidth-limited systems.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F40-O, 2017. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Frequency division multiplexing for very high capacity transmission in bandwidth-limited systems},\n type = {inproceedings},\n year = {2017},\n volume = {Part F40-O},\n id = {012a4e90-87d4-32f4-81fa-638d21573be9},\n created = {2017-10-13T10:09:16.367Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.367Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2017 OSA. FDM is shown to achieve high capacity facing system bandwidth limitations and exploiting its flexibility to allocate the subcarriers, also with an effective combination with MDM, in different applications, including PONs and mobile fronthaul.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Boffi, P.},\n doi = {10.1364/OFC.2017.W1K.1},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n © 2017 OSA. FDM is shown to achieve high capacity facing system bandwidth limitations and exploiting its flexibility to allocate the subcarriers, also with an effective combination with MDM, in different applications, including PONs and mobile fronthaul.\n
\n\n\n\n \n\n \n \n \n \n \n Frequency division multiplexing for very high capacity transmission in bandwidth-limited systems.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings, 2017. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Frequency division multiplexing for very high capacity transmission in bandwidth-limited systems},\n type = {inproceedings},\n year = {2017},\n id = {5d641f36-8563-31b5-a5be-59bcab8b29a0},\n created = {2017-10-13T10:09:16.968Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.968Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2017 Optical Society of America. FDM is shown to achieve high capacity facing system bandwidth limitations and exploiting its flexibility to allocate the subcarriers, also with an effective combination with MDM. in different applications, including PONs and mobile fronthaul.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Boffi, P.},\n booktitle = {2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings}\n}\n\n © 2017 Optical Society of America. FDM is shown to achieve high capacity facing system bandwidth limitations and exploiting its flexibility to allocate the subcarriers, also with an effective combination with MDM. in different applications, including PONs and mobile fronthaul.\n
\n\n\n\n \n\n \n \n \n \n \n Intra-datacenter links exploiting PCI Express Generation 4 interconnections.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Brunero, M.; Corapi, F.; Costa, V.; Meani, C.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F40-O, 2017. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Intra-datacenter links exploiting PCI Express Generation 4 interconnections},\n type = {inproceedings},\n year = {2017},\n volume = {Part F40-O},\n id = {7bf09348-fe95-3288-b081-0883621669ad},\n created = {2017-10-13T10:09:18.535Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.535Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2017 OSA. We demonstrate few-km reaches for PCIe-based optical fiber interconnections according to latency limitations, characterizing 16-Gb/s per lane Generation4 up to 10 km and confirming the Generation3 compliance of 2-km links employing suitable PCIe cards.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Brunero, M. and Corapi, F. and Costa, V. and Meani, C. and Boffi, P.},\n doi = {10.1364/OFC.2017.W4I.3},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n © 2017 OSA. We demonstrate few-km reaches for PCIe-based optical fiber interconnections according to latency limitations, characterizing 16-Gb/s per lane Generation4 up to 10 km and confirming the Generation3 compliance of 2-km links employing suitable PCIe cards.\n
\n\n\n\n \n\n \n \n \n \n \n Radio-over-modes for C-RAN architecture with smart optical resources assignment.\n \n \n \n\n\n \n Combi, L.; Matera, A.; Gatto, A.; Parolari, P.; Boffi, P.; and Spagnolini, U.\n\n\n \n\n\n\n In IEEE International Conference on Communications, 2017. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Radio-over-modes for C-RAN architecture with smart optical resources assignment},\n type = {inproceedings},\n year = {2017},\n keywords = {C-RAN,MDM,analog fronthauling,massive MIMO,optical resource allocation},\n id = {a826fb14-35aa-31ec-920f-ce1890487cf9},\n created = {2017-10-13T10:09:19.610Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.610Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2017 IEEE. In this paper we consider a centralized radio access network (C-RAN) architecture with a fully analog fronthaul link between remote radio heads (RRHs) and baseband units (BBUs) based on the radio over fiber (RoF) paradigm. Mode division multiplexing (MDM) and frequency division multiplexing (FDM) are employed to provide an additional multiplexing signal dimension to meet the huge bandwidth requirements of next generation (5G) wireless mobile systems. The main contribution of the paper is to prove that a smart resource assignment between the radio antennas and the mode/frequency dimensions allows the communication over the RRH-BBU link at rates that are comparable to those achieved by an ideal fronthauling where BBU and RRH are assumed to be co-located, even without any complex and costly optical equalization technique. Validation is on the radio-link capabilities employing multiple antennas to meet the demand for massive MIMO technology.},\n bibtype = {inproceedings},\n author = {Combi, L. and Matera, A. and Gatto, A. and Parolari, P. and Boffi, P. and Spagnolini, U.},\n doi = {10.1109/ICC.2017.7997215},\n booktitle = {IEEE International Conference on Communications}\n}\n\n © 2017 IEEE. In this paper we consider a centralized radio access network (C-RAN) architecture with a fully analog fronthaul link between remote radio heads (RRHs) and baseband units (BBUs) based on the radio over fiber (RoF) paradigm. Mode division multiplexing (MDM) and frequency division multiplexing (FDM) are employed to provide an additional multiplexing signal dimension to meet the huge bandwidth requirements of next generation (5G) wireless mobile systems. The main contribution of the paper is to prove that a smart resource assignment between the radio antennas and the mode/frequency dimensions allows the communication over the RRH-BBU link at rates that are comparable to those achieved by an ideal fronthauling where BBU and RRH are assumed to be co-located, even without any complex and costly optical equalization technique. Validation is on the radio-link capabilities employing multiple antennas to meet the demand for massive MIMO technology.\n
\n\n\n\n \n\n \n \n \n \n \n FDM exploitation for next access and data networks.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, 2017. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {FDM exploitation for next access and data networks},\n type = {inproceedings},\n year = {2017},\n keywords = {access network,frequency division multiplexing,optical communications},\n id = {37de4e57-939f-39a8-ad34-a15cd66a75cd},\n created = {2017-12-22T22:14:38.739Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-12-22T22:14:38.739Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2017 IEEE. By means of the dynamic and flexible choice of subcarrier modulation and spacing, frequency division multiplexing is demonstrated to overcome the system bandwidth limits achieving high capacity, both for datacenter interconnections and for multiple access passive optical networks.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Boffi, P.},\n doi = {10.1109/ICTON.2017.8024854},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2017 IEEE. By means of the dynamic and flexible choice of subcarrier modulation and spacing, frequency division multiplexing is demonstrated to overcome the system bandwidth limits achieving high capacity, both for datacenter interconnections and for multiple access passive optical networks.\n
\n\n\n\n \n\n \n \n \n \n \n RSOA-based self-seeded transmitters: The ERMES project results and offsprings.\n \n \n \n\n\n \n Parolari, P.; Brunero, M.; Gatto, A.; and Martinelli, M.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, 2017. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {RSOA-based self-seeded transmitters: The ERMES project results and offsprings},\n type = {inproceedings},\n year = {2017},\n keywords = {WDM passive optical networks (PON),colourless optical transmitter,fronthaul,reflective semiconductor optical amplifier (RSOA),self-seeding},\n id = {d9fea4ca-3b27-36e7-b2c4-f909d4e2aeaa},\n created = {2017-12-22T22:14:38.807Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-12-22T22:14:38.807Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2017 IEEE. The EU FP7 ERMES project focused on the development of a wavelength division multiplexed passive optical network (WDM PON) colourless self-tuning transmitter based on reflective semiconductor optical amplifiers (RSOAs) self-seeding. These transmitters represent low cost solutions to achieve self-organized wavelength access networks. The EU ERMES project developed self-tuning transmitters both in the C- and O- band with tens of kilometres reach up to 10 Gb/s. During the project we developed different self-seeding architectures with single RSOA exploitation (standard self-seeding) or two-RSOA exploitation (amplified or face-to-face self-seeding). The employment of Faraday rotators and mirrors in retracing configurations ensured polarization insensitive operation of the self-seeded architectures allowing for the exploitation of high gain C and O-band RSOAs, which present a very high polarization dependent gain. The project evaluated the coexistence of time division multiplexing (TDM) and WDM PON supporting high-numbers of users: although the burst mode operation was limited by the build-up time of the long-cavity laser, the rise time is compatible with a sleep mode for energy saving. After the project conclusion self-seeded transmitters have been exploited with alternative modulation formats including polarization division multiplexing and frequency division multiplexing in order to increase the achievable bit rates. Finally further studies to increase modulation cancellation inside self-seeded transmitters have been performed.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Brunero, M. and Gatto, A. and Martinelli, M.},\n doi = {10.1109/ICTON.2017.8025156},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2017 IEEE. The EU FP7 ERMES project focused on the development of a wavelength division multiplexed passive optical network (WDM PON) colourless self-tuning transmitter based on reflective semiconductor optical amplifiers (RSOAs) self-seeding. These transmitters represent low cost solutions to achieve self-organized wavelength access networks. The EU ERMES project developed self-tuning transmitters both in the C- and O- band with tens of kilometres reach up to 10 Gb/s. During the project we developed different self-seeding architectures with single RSOA exploitation (standard self-seeding) or two-RSOA exploitation (amplified or face-to-face self-seeding). The employment of Faraday rotators and mirrors in retracing configurations ensured polarization insensitive operation of the self-seeded architectures allowing for the exploitation of high gain C and O-band RSOAs, which present a very high polarization dependent gain. The project evaluated the coexistence of time division multiplexing (TDM) and WDM PON supporting high-numbers of users: although the burst mode operation was limited by the build-up time of the long-cavity laser, the rise time is compatible with a sleep mode for energy saving. After the project conclusion self-seeded transmitters have been exploited with alternative modulation formats including polarization division multiplexing and frequency division multiplexing in order to increase the achievable bit rates. Finally further studies to increase modulation cancellation inside self-seeded transmitters have been performed.\n
\n\n\n\n \n\n \n \n \n \n \n LTE transmission exploiting pulse width modulation in fibre optic links.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Combi, L.; Sacchi, R.; Giacometti, R.; Lena, A.; Canziani, C.; and Spagnolini, U.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, 2017. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {LTE transmission exploiting pulse width modulation in fibre optic links},\n type = {inproceedings},\n year = {2017},\n keywords = {PWM,RSOA,WDM PON,external-seeding,fronthaul},\n id = {25f204ef-6e15-3855-8395-cc2ee8066fb2},\n created = {2017-12-22T22:14:38.869Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-12-22T22:14:38.869Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2017 IEEE. Recently it has been demonstrated that pulse width modulation (PWM) can represent a viable solution for the analog optical fronthaul alternative to standard radio over fibre, which still avoids the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on/off keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBUs). In particular in this contribution we demonstrate the capabilities of optical PWM for the transport of LTE signals to support the centralized access network (C-RAN) fronthaul in fibre optic link up to 10-km of standard single mode fibre. The generation and analysis of the radio signals is provided by software modules compliant with the LTE standard which allowed to analyse performance results for the different LTE carriers, channels and services. The PWM optical signal connecting RRUs to BBUs is generated by either directly modulating a DFB laser or an externally seeded reflective semiconductor optical amplifier (RSOA). Both devices could be exploited inside a wavelength division multiplexed passive optical network (WDM PON) architecture where the various RRU-to-BBU links are pooled through virtual point-to-point connections at different wavelengths.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Combi, L. and Sacchi, R. and Giacometti, R. and Lena, A. and Canziani, C. and Spagnolini, U.},\n doi = {10.1109/ICTON.2017.8025160},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2017 IEEE. Recently it has been demonstrated that pulse width modulation (PWM) can represent a viable solution for the analog optical fronthaul alternative to standard radio over fibre, which still avoids the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on/off keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBUs). In particular in this contribution we demonstrate the capabilities of optical PWM for the transport of LTE signals to support the centralized access network (C-RAN) fronthaul in fibre optic link up to 10-km of standard single mode fibre. The generation and analysis of the radio signals is provided by software modules compliant with the LTE standard which allowed to analyse performance results for the different LTE carriers, channels and services. The PWM optical signal connecting RRUs to BBUs is generated by either directly modulating a DFB laser or an externally seeded reflective semiconductor optical amplifier (RSOA). Both devices could be exploited inside a wavelength division multiplexed passive optical network (WDM PON) architecture where the various RRU-to-BBU links are pooled through virtual point-to-point connections at different wavelengths.\n
\n\n\n\n \n\n \n \n \n \n \n Feasibility analysis of a 4-QAM colorless transmitter based on two RSOAs.\n \n \n \n\n\n \n Totović, A.; Gvozdić, D.; Santagiustina, M.; Antonelli, C.; Parolari, P.; and Boffi, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, volume Part F82-C, 2017. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {Feasibility analysis of a 4-QAM colorless transmitter based on two RSOAs},\n type = {inproceedings},\n year = {2017},\n volume = {Part F82-C},\n id = {8a1fe31a-7748-363c-946a-0345db6631ec},\n created = {2023-05-29T11:52:27.612Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.612Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n bibtype = {inproceedings},\n author = {Totović, A. and Gvozdić, D. and Santagiustina, M. and Antonelli, C. and Parolari, P. and Boffi, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n
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\n \n \n\n \n \n \n \n \n 20-Gb/s polarization division multiplexed WDM PON transmitter based on self seeded RSOAs.\n \n \n \n\n\n \n Brunero, M.; Parolari, P.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n In IET Conference Publications, volume 2016, 2016. \n \n\n\n\n
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\n\n\n \n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {20-Gb/s polarization division multiplexed WDM PON transmitter based on self seeded RSOAs},\n type = {inproceedings},\n year = {2016},\n keywords = {Optical communications,Polarization multiplexing,RSOA,WDM PON},\n volume = {2016},\n issue = {CP704},\n id = {fc47fd90-762e-32c4-af21-59ecb6e78227},\n created = {2017-10-13T10:09:16.175Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.175Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Reflective semiconductor optical amplifier (RSOA)-based self-seeded (SS) transmitters have proved to be compact selftuning transceivers for wavelength division multiplexed passive optical networks (WDM PONs). The small electrooptical bandwidth of currently available RSOA devices limits the maximum bit-rate for each transmitter. We thus propose a self-tuning WDM PON multilevel transmitter based on selfseeding in two RSOAs co-located at the network end (e.g. at the optical network unit (ONU)). The architecture takes advantage of a single cavity which sustains two mode families with orthogonal polarizations, thanks to the exploitation of the Faraday rotator mirror (FRM)-based retracing optical circuit. The multilevel transmission allows a capacity doubling, overcoming the RSOA bandwidth limitations. We analyse the build up and the modulation response of the proposed transmitter when exploiting two O-band RSOAs, showing spectra and output eye diagrams. The polarization division multiplexed transmitter performance from 5 Gb/s to 20 Gb/s are presented with propagation over up to 50-km standard single mode fibre, demonstrating BER below the FEC limit.},\n bibtype = {inproceedings},\n author = {Brunero, M. and Parolari, P. and Brenot, R. and Martinelli, M.},\n booktitle = {IET Conference Publications}\n}\n\n Reflective semiconductor optical amplifier (RSOA)-based self-seeded (SS) transmitters have proved to be compact selftuning transceivers for wavelength division multiplexed passive optical networks (WDM PONs). The small electrooptical bandwidth of currently available RSOA devices limits the maximum bit-rate for each transmitter. We thus propose a self-tuning WDM PON multilevel transmitter based on selfseeding in two RSOAs co-located at the network end (e.g. at the optical network unit (ONU)). The architecture takes advantage of a single cavity which sustains two mode families with orthogonal polarizations, thanks to the exploitation of the Faraday rotator mirror (FRM)-based retracing optical circuit. The multilevel transmission allows a capacity doubling, overcoming the RSOA bandwidth limitations. We analyse the build up and the modulation response of the proposed transmitter when exploiting two O-band RSOAs, showing spectra and output eye diagrams. The polarization division multiplexed transmitter performance from 5 Gb/s to 20 Gb/s are presented with propagation over up to 50-km standard single mode fibre, demonstrating BER below the FEC limit.\n
\n\n\n\n \n\n \n \n \n \n \n PWM fronthauling in reflective PON.\n \n \n \n\n\n \n Combi, L.; Gatto, A.; Martinelli, M.; Parolari, P.; and Spagnolini, U.\n\n\n \n\n\n\n In EUCNC 2016 - European Conference on Networks and Communications, 2016. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {PWM fronthauling in reflective PON},\n type = {inproceedings},\n year = {2016},\n keywords = {Cloud-RAN,Optical waveforms,analog fronthauling,optical PWM,reflection-based fronthauling},\n id = {3fd5f618-4599-3baf-81e9-e02e75ac8717},\n created = {2017-10-13T10:09:17.485Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.485Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2016 IEEE. Pulse width modulation (PWM) has recently been proposed for analog optical fronthauling in centralized radio access networks (CRANs) to avoid the bandwidth expansion of digital fronthauling (e.g., common public radio interface protocol, CPRI). At the transmitter, the radio-signal is mapped onto the duration of an on/off keyed optical signal, while at the fiber receiving-end each PW optical modulated sample is digitized so that the overall analog communication link is transparent. In this framework, we propose a new architecture for optical transmission of PW modulated signals, based on the reflection at the remotized antennas of a seeding signal originated at the baseband unit (BBU). Pros and cons of PWM fronthauling in reflective passive optical network (PON) are evaluated by investigating the outcomes of an in-lab experiment that implements a CRAN fronthauling of 100-MHz RF signals with single-carrier 64QAM modulation up to 20-km standard single mode fiber. Experimental results provide some room for discussion on PWM fronthauling technique.},\n bibtype = {inproceedings},\n author = {Combi, L. and Gatto, A. and Martinelli, M. and Parolari, P. and Spagnolini, U.},\n doi = {10.1109/EuCNC.2016.7561044},\n booktitle = {EUCNC 2016 - European Conference on Networks and Communications}\n}\n\n © 2016 IEEE. Pulse width modulation (PWM) has recently been proposed for analog optical fronthauling in centralized radio access networks (CRANs) to avoid the bandwidth expansion of digital fronthauling (e.g., common public radio interface protocol, CPRI). At the transmitter, the radio-signal is mapped onto the duration of an on/off keyed optical signal, while at the fiber receiving-end each PW optical modulated sample is digitized so that the overall analog communication link is transparent. In this framework, we propose a new architecture for optical transmission of PW modulated signals, based on the reflection at the remotized antennas of a seeding signal originated at the baseband unit (BBU). Pros and cons of PWM fronthauling in reflective passive optical network (PON) are evaluated by investigating the outcomes of an in-lab experiment that implements a CRAN fronthauling of 100-MHz RF signals with single-carrier 64QAM modulation up to 20-km standard single mode fiber. Experimental results provide some room for discussion on PWM fronthauling technique.\n
\n\n\n\n \n\n \n \n \n \n \n In-service line monitoring of a colourless wavelength division multiplexed passive optical network.\n \n \n \n\n\n \n Chiarello, F.; Palmieri, L.; Parolari, P.; Brunero, M.; Boffi, P.; Galtarossa, A.; and Santagiustina, M.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2016-Augus, 2016. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {In-service line monitoring of a colourless wavelength division multiplexed passive optical network},\n type = {inproceedings},\n year = {2016},\n keywords = {fibre optics links and subsystems,optical time domain reflectometry},\n volume = {2016-Augus},\n id = {f724cbd4-64f3-327e-bf5f-c20029037ebf},\n created = {2017-10-13T10:09:17.956Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.956Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2016 IEEE. A multi-wavelength tuneable OTDR is realized and tested for in-service monitoring of a colourless WDM PON. The instrument regenerates the probe optical pulse by modulating, through an acousto-optic modulator, the continuous wave emission of a tuneable telecommunication laser. This setup reduces at the same time the spontaneous emission noise and the coherent Rayleigh noise. The absence of interference between the signal transmission and the monitoring is demonstrated also performing BER measurements of the upstream communication in an RSOA-based reflective PON.},\n bibtype = {inproceedings},\n author = {Chiarello, F. and Palmieri, L. and Parolari, P. and Brunero, M. and Boffi, P. and Galtarossa, A. and Santagiustina, M.},\n doi = {10.1109/ICTON.2016.7550449},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2016 IEEE. A multi-wavelength tuneable OTDR is realized and tested for in-service monitoring of a colourless WDM PON. The instrument regenerates the probe optical pulse by modulating, through an acousto-optic modulator, the continuous wave emission of a tuneable telecommunication laser. This setup reduces at the same time the spontaneous emission noise and the coherent Rayleigh noise. The absence of interference between the signal transmission and the monitoring is demonstrated also performing BER measurements of the upstream communication in an RSOA-based reflective PON.\n
\n\n\n\n \n\n \n \n \n \n \n LTE-A mobile fronthaul exploiting pulse-width modulation in a RSOA-based WDM PON.\n \n \n \n\n\n \n Gatto, A.; Boffi, P.; Combi, L.; Parolari, P.; Spagnolini, U.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n In 2016 Optical Fiber Communications Conference and Exhibition, OFC 2016, 2016. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {LTE-A mobile fronthaul exploiting pulse-width modulation in a RSOA-based WDM PON},\n type = {inproceedings},\n year = {2016},\n id = {e0e90a62-0b17-3f4d-acd7-7aa8eeef07a6},\n created = {2017-10-13T10:09:18.197Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.197Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2016 OSA. Pulse width modulation for optical C-RAN fronthauling of 100-MHz bandwidth LTE-A signals is proved for the first time in a colorless self-tuning WDM PON, exploiting broadband-seeded RSOAs. Transmission up to 20-km SSMF is experimentally demonstrated.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Boffi, P. and Combi, L. and Parolari, P. and Spagnolini, U. and Brenot, R. and Martinelli, M.},\n booktitle = {2016 Optical Fiber Communications Conference and Exhibition, OFC 2016}\n}\n\n © 2016 OSA. Pulse width modulation for optical C-RAN fronthauling of 100-MHz bandwidth LTE-A signals is proved for the first time in a colorless self-tuning WDM PON, exploiting broadband-seeded RSOAs. Transmission up to 20-km SSMF is experimentally demonstrated.\n
\n\n\n\n \n\n \n \n \n \n \n Fronthaul based on pulse-width modulation in RSOA WDM PONS with broadband and coherent seeds.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Combi, L.; Spagnolini, U.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 8(11). 2016.\n \n\n\n\n
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\n\n\n@article{\n title = {Fronthaul based on pulse-width modulation in RSOA WDM PONS with broadband and coherent seeds},\n type = {article},\n year = {2016},\n keywords = {External seeding; Fiber optics communications;Fron},\n volume = {8},\n id = {c407cacd-27bc-3860-ae55-b85ecb46fc85},\n created = {2017-10-13T10:09:18.306Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.306Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2009-2012 OSA. To avoid the bandwidth expansion of the optical digital fronthaul, recently it has been demonstrated that pulse-Width modulation (PWM) is a viable solution for the analog optical fronthaul, as an alternative to standard radio over fiber. The PWM encodes the analog samples at the transmitter onto the duration of the on-off keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBUs). The PWM optical signal can be transmitted over a wavelength-division multiplexing passive optical network (WDM PON). In this paper we compare the performance of two architectures exploiting reflective semiconductor optical amplifiers externally seeded either by broadband or by coherent lights. The various RRUto- BBU links are pooled through virtual point-To-Point connections at different wavelengths generated by a sliced broadband source or by an array of distributed feedback Bragg (DFB) lasers. In both cases to reduce Rayleigh scattering impairments associated with external seeding, the proposed solution takes advantage of a polarization retracing circuit based on Faraday rotators. We compare the two architectures by evaluating the up-Link transmission performance of 100 MHz RF signals over up to 20 km standard single mode fiber employing Long-Term Evolution (LTE) mobile signals with 64-QAM and 256-QAM modulations.},\n bibtype = {article},\n author = {Gatto, A. and Parolari, P. and Combi, L. and Spagnolini, U. and Brenot, R. and Martinelli, M.},\n doi = {10.1364/JOCN.8.000B55},\n journal = {Journal of Optical Communications and Networking},\n number = {11}\n}\n\n © 2009-2012 OSA. To avoid the bandwidth expansion of the optical digital fronthaul, recently it has been demonstrated that pulse-Width modulation (PWM) is a viable solution for the analog optical fronthaul, as an alternative to standard radio over fiber. The PWM encodes the analog samples at the transmitter onto the duration of the on-off keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBUs). The PWM optical signal can be transmitted over a wavelength-division multiplexing passive optical network (WDM PON). In this paper we compare the performance of two architectures exploiting reflective semiconductor optical amplifiers externally seeded either by broadband or by coherent lights. The various RRUto- BBU links are pooled through virtual point-To-Point connections at different wavelengths generated by a sliced broadband source or by an array of distributed feedback Bragg (DFB) lasers. In both cases to reduce Rayleigh scattering impairments associated with external seeding, the proposed solution takes advantage of a polarization retracing circuit based on Faraday rotators. We compare the two architectures by evaluating the up-Link transmission performance of 100 MHz RF signals over up to 20 km standard single mode fiber employing Long-Term Evolution (LTE) mobile signals with 64-QAM and 256-QAM modulations.\n
\n\n\n\n \n\n \n \n \n \n \n Externally-seeded WDM PON for next generation mobile access based on pulse-width modulation.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Combi, L.; Boffi, P.; Spagnolini, U.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2016-Augus, 2016. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Externally-seeded WDM PON for next generation mobile access based on pulse-width modulation},\n type = {inproceedings},\n year = {2016},\n keywords = {PWM,RSOA,WDM PON,external-seeding,fronthaul},\n volume = {2016-Augus},\n id = {a9b7c3cb-29f6-3cd4-b7d6-aead1fa17f60},\n created = {2017-10-13T10:09:18.461Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.461Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2016 IEEE. Recently it has been demonstrated that pulse width modulation (PWM) can represent a viable solution for the analog optical fronthaul alternative to standard radio over fibre, which still avoids the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on/off keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBUs). In particular in this contribution the PWM optical signal is transmitted over a wavelength division multiplexed passive optical network (WDM PON) architecture exploiting externally-seeded reflective semiconductor optical amplifiers. The various RRU-to-BBU links are pooled through virtual point-to-point connections at different wavelengths generated by an array of DFB lasers. To reduce Rayleigh scattering impairments associated with external seeding the proposed solution takes advantage of a polarization retracing circuit based on Faraday rotators. We demonstrate the up-link transmission of 100-MHz RF signals up to 20-km standard single mode fibre with error vector magnitude percentages compatible with 64 QAM and 256 QAM modulations.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Combi, L. and Boffi, P. and Spagnolini, U. and Brenot, R. and Martinelli, M.},\n doi = {10.1109/ICTON.2016.7550450},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2016 IEEE. Recently it has been demonstrated that pulse width modulation (PWM) can represent a viable solution for the analog optical fronthaul alternative to standard radio over fibre, which still avoids the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on/off keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBUs). In particular in this contribution the PWM optical signal is transmitted over a wavelength division multiplexed passive optical network (WDM PON) architecture exploiting externally-seeded reflective semiconductor optical amplifiers. The various RRU-to-BBU links are pooled through virtual point-to-point connections at different wavelengths generated by an array of DFB lasers. To reduce Rayleigh scattering impairments associated with external seeding the proposed solution takes advantage of a polarization retracing circuit based on Faraday rotators. We demonstrate the up-link transmission of 100-MHz RF signals up to 20-km standard single mode fibre with error vector magnitude percentages compatible with 64 QAM and 256 QAM modulations.\n
\n\n\n\n \n\n \n \n \n \n \n RSOA-based FDM PON upstream with flexible multiple access capabilities in an NG-PON2 compliant architecture.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Brunero, M.; Martelli, P.; Brenot, R.; and Boffi, P.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 8(5). 2016.\n \n\n\n\n
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\n\n\n@article{\n title = {RSOA-based FDM PON upstream with flexible multiple access capabilities in an NG-PON2 compliant architecture},\n type = {article},\n year = {2016},\n keywords = {FDM,Fiber optics communications,PON,RSOA},\n volume = {8},\n id = {d0330ca2-43a6-3c68-9225-dad1ac28669e},\n created = {2017-10-13T10:09:18.927Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.927Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2009-2012 OSA. In a passive optical network (PON) architecture compliant with the next-generation PON Stage 2 standard layout, the frequency-division multiplexing (FDM) modulation has been exploited to effectively increase the upstream (US) capacity by overcoming the bandwidth limitation of the reflective semiconductor optical amplifiers (RSOAs) used at the optical network unit (ONU). The intrinsic flexibility offered by the FDM modulation allowed us to properly choose the FDM subcarrier assignment, the modulation format, and the baud rate per each ONU. A rate of 2 Gb/s per ONU has been experimentally demonstrated over a 20 km transmission in an optical distribution network (ODN) with 27 dB losses, and a rate of at least 1 Gb/s per ONU has been obtained after a 43 km standard single-mode fiber in an ODN with 31 dB losses. The preliminary experimentation has been carried out by means of two independent RSOA-based ONUs, sharing the same seed, targeting 32 Gb/s capacity per wavelength and 128 Gb/s overall throughput by means of 4 US wavelength division multiplexed carriers.},\n bibtype = {article},\n author = {Gatto, A. and Parolari, P. and Brunero, M. and Martelli, P. and Brenot, R. and Boffi, P.},\n doi = {10.1364/JOCN.8.000302},\n journal = {Journal of Optical Communications and Networking},\n number = {5}\n}\n\n © 2009-2012 OSA. In a passive optical network (PON) architecture compliant with the next-generation PON Stage 2 standard layout, the frequency-division multiplexing (FDM) modulation has been exploited to effectively increase the upstream (US) capacity by overcoming the bandwidth limitation of the reflective semiconductor optical amplifiers (RSOAs) used at the optical network unit (ONU). The intrinsic flexibility offered by the FDM modulation allowed us to properly choose the FDM subcarrier assignment, the modulation format, and the baud rate per each ONU. A rate of 2 Gb/s per ONU has been experimentally demonstrated over a 20 km transmission in an optical distribution network (ODN) with 27 dB losses, and a rate of at least 1 Gb/s per ONU has been obtained after a 43 km standard single-mode fiber in an ODN with 31 dB losses. The preliminary experimentation has been carried out by means of two independent RSOA-based ONUs, sharing the same seed, targeting 32 Gb/s capacity per wavelength and 128 Gb/s overall throughput by means of 4 US wavelength division multiplexed carriers.\n
\n\n\n\n \n\n \n \n \n \n \n NG-PON2 compliant RSOA-based FDM PON architecture for flexible upstream bandwidth allocation.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Brunero, M.; Martelli, P.; Brenot, R.; and Boffi, P.\n\n\n \n\n\n\n In 2016 Optical Fiber Communications Conference and Exhibition, OFC 2016, 2016. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {NG-PON2 compliant RSOA-based FDM PON architecture for flexible upstream bandwidth allocation},\n type = {inproceedings},\n year = {2016},\n id = {0f37fbdd-6a60-39fe-b72a-8f19edc926cb},\n created = {2017-10-13T10:09:19.295Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.295Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2016 OSA. We propose an upstream FDM PON architecture exploiting RSOA at the ONU, maintaining NG-PON2 standard layout with flexible bandwidth allocation. 2-Gb/s upstream transmission per user is experimentally demonstrated, targeting 128-Gb/s overall capacity.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Brunero, M. and Martelli, P. and Brenot, R. and Boffi, P.},\n booktitle = {2016 Optical Fiber Communications Conference and Exhibition, OFC 2016}\n}\n\n © 2016 OSA. We propose an upstream FDM PON architecture exploiting RSOA at the ONU, maintaining NG-PON2 standard layout with flexible bandwidth allocation. 2-Gb/s upstream transmission per user is experimentally demonstrated, targeting 128-Gb/s overall capacity.\n
\n\n\n\n \n\n \n \n \n \n \n Pulse width modulation for fronthaul in a broadband-seeded RSOA WDM PON.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Combi, L.; Spagnolini, U.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 28(15). 2016.\n \n\n\n\n
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\n\n\n@article{\n title = {Pulse width modulation for fronthaul in a broadband-seeded RSOA WDM PON},\n type = {article},\n year = {2016},\n keywords = {Fronthaul,colorless transmitter,passive optical network (PON),pulse width modulation,reflective semiconductor optical amplifier (RSOA)},\n volume = {28},\n id = {def84a85-0a2a-3fc0-b29d-292f60cf134f},\n created = {2017-10-13T10:09:19.834Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.834Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 1989-2012 IEEE. Pulse width modulation (PWM) can support centralized radio access networks in analog optical fronthaul, avoiding the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on-off-keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBU). In-between the PWM encoded signal is transmitted over a novel wavelength-division-multiplexed passive optical network (WDM PON) architecture, exploiting broadband-seeded reflective semiconductor optical amplifiers in a polarization retracing circuit, which is resilient to Rayleigh scattering impairments. Multiple RRU-to-BBU links are supported through virtual point-to-point connections based on the wavelength resource. We demonstrate the performance of the proposed PWM-based colorless self-tuning WDM PON supporting the fronthaul of 100-MHz RF signals up to 20-km transmission over standard single mode fiber for 30 WDM channels.},\n bibtype = {article},\n author = {Parolari, P. and Gatto, A. and Combi, L. and Spagnolini, U. and Brenot, R. and Martinelli, M.},\n doi = {10.1109/LPT.2016.2559786},\n journal = {IEEE Photonics Technology Letters},\n number = {15}\n}\n\n © 1989-2012 IEEE. Pulse width modulation (PWM) can support centralized radio access networks in analog optical fronthaul, avoiding the bandwidth expansion of the digital fronthaul. The PWM encodes the analog samples at the transmitter onto the duration of the on-off-keyed optical signal, splitting the sampling and quantization of the radio signal between remote radio units (RRUs) and baseband units (BBU). In-between the PWM encoded signal is transmitted over a novel wavelength-division-multiplexed passive optical network (WDM PON) architecture, exploiting broadband-seeded reflective semiconductor optical amplifiers in a polarization retracing circuit, which is resilient to Rayleigh scattering impairments. Multiple RRU-to-BBU links are supported through virtual point-to-point connections based on the wavelength resource. We demonstrate the performance of the proposed PWM-based colorless self-tuning WDM PON supporting the fronthaul of 100-MHz RF signals up to 20-km transmission over standard single mode fiber for 30 WDM channels.\n
\n\n\n\n \n\n \n \n \n \n \n Multilevel pulse width modulation fibre optic transmission for next generation mobile fronthaul.\n \n \n \n\n\n \n Parolari, P.; Gatto, A.; Combi, L.; Boffi, P.; Martinelli, M.; and Spagnolini, U.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, 2016. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Multilevel pulse width modulation fibre optic transmission for next generation mobile fronthaul},\n type = {inproceedings},\n year = {2016},\n id = {4afc8612-e1e0-3eda-a2fc-043bc1b3bc7d},\n created = {2017-10-13T10:09:20.388Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.388Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© VDE VERLAG GMBH · Berlin · Offenbach. Multilevel pulse width modulation for optical C-RAN fronthaul is proved and compared with standard pulse width modulation for aggregated LTE channels. Transmission over 7.5-km SSMF in a WDM PON fronthaul network is experimentally demonstrated for 16 LTE-64QAM aggregated channels.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Gatto, A. and Combi, L. and Boffi, P. and Martinelli, M. and Spagnolini, U.},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n © VDE VERLAG GMBH · Berlin · Offenbach. Multilevel pulse width modulation for optical C-RAN fronthaul is proved and compared with standard pulse width modulation for aggregated LTE channels. Transmission over 7.5-km SSMF in a WDM PON fronthaul network is experimentally demonstrated for 16 LTE-64QAM aggregated channels.\n
\n\n\n\n \n\n \n \n \n \n \n 25 Gbit/s per user coherent all-optical OFDM for tbit/s-capable PONs.\n \n \n \n\n\n \n Morosi, J.; Hoxha, J.; Martelli, P.; Parolari, P.; Cincotti, G.; Shimizu, S.; Wada, N.; and Boffi, P.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 8(4). 2016.\n \n\n\n\n
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\n\n\n@article{\n title = {25 Gbit/s per user coherent all-optical OFDM for tbit/s-capable PONs},\n type = {article},\n year = {2016},\n keywords = {Fiber-optic communications; OFDM; PON;Waveguide ar},\n volume = {8},\n id = {ffb45e73-6c57-35bb-b80d-9e53b11d6e9b},\n created = {2017-10-13T10:09:21.085Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.085Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2016 OSA. We propose and test a coherent all-optical orthogonal frequency-division multiplexing (AO-OFDM) system, based on all-optical (de)multiplexing and coherent detection, for multiterabit per second (multi-Tbit/s) passive optical networks (PONs). The proposed approach allows us to greatly increase the downstream data rate per user and extend the standard single-mode fiber reach for future long-reach applications. The compliance with a next-generation PON layout is guaranteed thanks to the exploitation of cyclic arrayed waveguide gratings. Five-user transmission with 12.5 Gbaud quadrature phase shift keying modulation per user (125 Gbit/s downstream capacity per wavelength) over a more than 40 km link has been successfully demonstrated.},\n bibtype = {article},\n author = {Morosi, J. and Hoxha, J. and Martelli, P. and Parolari, P. and Cincotti, G. and Shimizu, S. and Wada, N. and Boffi, P.},\n doi = {10.1364/JOCN.8.000190},\n journal = {Journal of Optical Communications and Networking},\n number = {4}\n}\n\n © 2016 OSA. We propose and test a coherent all-optical orthogonal frequency-division multiplexing (AO-OFDM) system, based on all-optical (de)multiplexing and coherent detection, for multiterabit per second (multi-Tbit/s) passive optical networks (PONs). The proposed approach allows us to greatly increase the downstream data rate per user and extend the standard single-mode fiber reach for future long-reach applications. The compliance with a next-generation PON layout is guaranteed thanks to the exploitation of cyclic arrayed waveguide gratings. Five-user transmission with 12.5 Gbaud quadrature phase shift keying modulation per user (125 Gbit/s downstream capacity per wavelength) over a more than 40 km link has been successfully demonstrated.\n
\n\n\n\n \n\n \n \n \n \n \n PCIe-based network architectures over optical fiber links: An insight from the advent project.\n \n \n \n\n\n \n Boffi, P.; Parolari, P.; Gatto, A.; Martelli, P.; Corapi, F.; Albanese, A.; Costa, V.; Crosta, P.; Meani, C.; Paglierani, P.; and Martinelli, M.\n\n\n \n\n\n\n In IET Conference Publications, volume 2016, 2016. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {PCIe-based network architectures over optical fiber links: An insight from the advent project},\n type = {inproceedings},\n year = {2016},\n keywords = {Active optical cable,Datacentre,Network function virtualization,PCI express},\n volume = {2016},\n issue = {CP704},\n id = {662c5f95-fca2-37f9-bc5d-32b3ba07704e},\n created = {2017-10-13T10:09:23.146Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.146Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {PCI Express based innovative architectures designed for datacentre connections are proposed exploiting fiber communications for remote very high-speed connectivity. According with the ADVENT project approach a disruptive scenario based on an unique PCIe fabric is described, assuring convergent, storage/analytics functionalities mapped to a global shared memory. In particular, the hardware configuration of this kind of the proposed architecture is presented for inter-host remote communications, showing the intrinsic advantages in terms of connectivity and applications. Moreover, experimentation of PCIe Gen3 interconnections over up to 2-km standard fiber is demonstrated strictly compliant with the standard.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Parolari, P. and Gatto, A. and Martelli, P. and Corapi, F. and Albanese, A. and Costa, V. and Crosta, P. and Meani, C. and Paglierani, P. and Martinelli, M.},\n booktitle = {IET Conference Publications}\n}\n\n PCI Express based innovative architectures designed for datacentre connections are proposed exploiting fiber communications for remote very high-speed connectivity. According with the ADVENT project approach a disruptive scenario based on an unique PCIe fabric is described, assuring convergent, storage/analytics functionalities mapped to a global shared memory. In particular, the hardware configuration of this kind of the proposed architecture is presented for inter-host remote communications, showing the intrinsic advantages in terms of connectivity and applications. Moreover, experimentation of PCIe Gen3 interconnections over up to 2-km standard fiber is demonstrated strictly compliant with the standard.\n
\n\n\n\n \n\n \n \n \n \n \n Demystification of the Self-Seeded WDM Access.\n \n \n \n\n\n \n Maho, A.; Simon, G.; Barbet, S.; Lelarge, F.; Saliou, F.; Chanclou, P.; Parolari, P.; Marazzi, L.; Brunero, M.; Martinelli, M.; Grebewold, S.; Leuthold, J.; and Brenot, R.\n\n\n \n\n\n\n Journal of Lightwave Technology, 34(2). 2016.\n \n\n\n\n
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\n\n\n@article{\n title = {Demystification of the Self-Seeded WDM Access},\n type = {article},\n year = {2016},\n keywords = {Colorless,Reflective Semiconductor Optical Amplifier (RSOA),Self-Seeded Cavity,WDM PON},\n volume = {34},\n id = {1dc28268-80f5-341c-b5f5-92d0a0a97f6b},\n created = {2017-10-13T10:09:23.712Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.712Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 1983-2012 IEEE. The self-seeded cavity appeared in the last few years as a colorless and low cost solution for wavelength division multiplexing access. Although the self-seeded source presents a simple architecture, its behavior has been misunderstood for a long time. In this paper, we explain its operating principles and why we can define such a source as a laser. We evidence a laser threshold and show cavity modes for various lengths. We describe the conditions required by the reflective semiconductor optical amplifier to sustain the self-seeded cavity, by evaluating the choice of its epitaxial structure and the influence of its optical confinement factor. An analysis of the cavity behavior is given, pointing out that the relative intensity noise results from the beating noise between the cavity modes. An overview over the last performances in the C- as well as in the O-band is then presented. Some practical applications are reported. In particular, we detail the mobile front-haul as a possible employment for the self-seeded cavity to achieve a self-organized wavelength network.},\n bibtype = {article},\n author = {Maho, A. and Simon, G. and Barbet, S. and Lelarge, F. and Saliou, F. and Chanclou, P. and Parolari, P. and Marazzi, L. and Brunero, M. and Martinelli, M. and Grebewold, S.A. and Leuthold, J. and Brenot, R.},\n doi = {10.1109/JLT.2015.2466090},\n journal = {Journal of Lightwave Technology},\n number = {2}\n}\n\n © 1983-2012 IEEE. The self-seeded cavity appeared in the last few years as a colorless and low cost solution for wavelength division multiplexing access. Although the self-seeded source presents a simple architecture, its behavior has been misunderstood for a long time. In this paper, we explain its operating principles and why we can define such a source as a laser. We evidence a laser threshold and show cavity modes for various lengths. We describe the conditions required by the reflective semiconductor optical amplifier to sustain the self-seeded cavity, by evaluating the choice of its epitaxial structure and the influence of its optical confinement factor. An analysis of the cavity behavior is given, pointing out that the relative intensity noise results from the beating noise between the cavity modes. An overview over the last performances in the C- as well as in the O-band is then presented. Some practical applications are reported. In particular, we detail the mobile front-haul as a possible employment for the self-seeded cavity to achieve a self-organized wavelength network.\n
\n\n\n\n \n\n \n \n \n \n \n Experimental Demonstration of a Metro Area Network with Terabit-capable Sliceable Bitrate Variable Transceiver using Direct Modulated VCSELs and Coherent Detection.\n \n \n \n\n\n \n Fabrega, J.; Vílchez, F.; Moreolo, M.; Martínez, R.; Quispe, A.; Nadal, L.; Casellas, R.; Vilalta, R.; Muñoz, R.; Neumeyr, C.; Lee, S.; Shin, J.; Jung, H.; Mariani, G.; Heuvelmans, R.; Gatto, A.; Parolari, P.; Boffi, P.; Tessema, N.; Calabretta, N.; Larrabeiti, D.; and Fernández-Palacios, J.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2016. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Experimental Demonstration of a Metro Area Network with Terabit-capable Sliceable Bitrate Variable Transceiver using Direct Modulated VCSELs and Coherent Detection},\n type = {inproceedings},\n year = {2016},\n id = {36ec7d3e-7bde-3c8a-b9bd-593d23e71ff3},\n created = {2023-05-29T11:52:27.664Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.664Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We experimentally demonstrate a disaggregated metro area network that includes new photonic devices, node architectures, and sliceable bandwidth/bitrate variable transceiver, transmitting up to 8×11=88 spatial/spectral channels for a total capacity of 1.676Tb/s.},\n bibtype = {inproceedings},\n author = {Fabrega, J.M. and Vílchez, F.J. and Moreolo, M.S. and Martínez, R. and Quispe, A. and Nadal, L. and Casellas, R. and Vilalta, R. and Muñoz, R. and Neumeyr, C. and Lee, S.Y. and Shin, J.U. and Jung, H.D. and Mariani, G. and Heuvelmans, R. and Gatto, A. and Parolari, P. and Boffi, P. and Tessema, N.M. and Calabretta, N. and Larrabeiti, D. and Fernández-Palacios, J.P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We experimentally demonstrate a disaggregated metro area network that includes new photonic devices, node architectures, and sliceable bandwidth/bitrate variable transceiver, transmitting up to 8×11=88 spatial/spectral channels for a total capacity of 1.676Tb/s.\n
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\n \n \n\n \n \n \n \n \n Up to 20-Gb/s multilevel WDM PON transmitter based on self-seeded RSOAs.\n \n \n \n\n\n \n Parolari, P.; Brunero, M.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, volume 2015-Novem, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Up to 20-Gb/s multilevel WDM PON transmitter based on self-seeded RSOAs},\n type = {inproceedings},\n year = {2015},\n volume = {2015-Novem},\n id = {75ae3ebf-262b-3faa-9439-dabe452e01be},\n created = {2017-10-13T10:09:16.473Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.473Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 Viajes el Corte Ingles, VECISA. We propose a novel colourless self-tuning WDM PON multilevel transmitter based on self-seeding in two RSOAs co-located at the ONU in a twofold retracing circuit. We demonstrate its operation up to 20 Gb/s with BER below the FEC limit.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Brunero, M. and Brenot, R. and Martinelli, M.},\n doi = {10.1109/ECOC.2015.7341820},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n © 2015 Viajes el Corte Ingles, VECISA. We propose a novel colourless self-tuning WDM PON multilevel transmitter based on self-seeding in two RSOAs co-located at the ONU in a twofold retracing circuit. We demonstrate its operation up to 20 Gb/s with BER below the FEC limit.\n
\n\n\n\n \n\n \n \n \n \n \n Pulse-width optical modulation for CRAN front-hauling.\n \n \n \n\n\n \n Combi, L.; Gatto, A.; Martinelli, M.; Parolari, P.; and Spagnolini, U.\n\n\n \n\n\n\n In 2015 IEEE Globecom Workshops, GC Wkshps 2015 - Proceedings, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Pulse-width optical modulation for CRAN front-hauling},\n type = {inproceedings},\n year = {2015},\n keywords = {Analog fronthauling,Cloud-RAN,Optical PWM,Optical waveforms},\n id = {09fa1c9b-1c42-3c72-80ce-ab6d7810327b},\n created = {2017-10-13T10:09:17.198Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.198Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 IEEE. Future (5G) mobile networks aim to pervasivity (cell size < 1 km) and high data-rate ( > 20-50 Mb/s), centralized radio access network (CRAN) is the most promising paradigm that aggregates the baseband processing to comply with dense antennas deployment. Even if optical networks are the most promising solution for CRAN front-hauling, there is the need to investigate alternative and/or complementary solutions to digital front-hauling (e.g., CPRI protocol) that can make a parsimonious usage of the optical bandwidth and related electronics. Abstract - In this framework, here we propose a new waveform coding for the transport of analog RAN signals by employing the pulse width modulation (PWM) for optical front-hauling. At the transmitter, the radio-signal is sampled and mapped onto the duration of an on/off optical signal, at the fiber receiving-end each PW optical modulated sample is digitized so that the overall communication is transparent. Conceptually, the front- hauling PW waveform is equivalent to split sampling (at transmitter) and quantization (at receiver) so as to avoid the bandwidth expansion of CPRI digitalization. Pros and cons of PW waveforms for CRAN front-hauling are evaluated by investigating the outcomes of an in-lab experiment transmitting 100-MHz RF signals with 16QAM modulation up to 20-km standard single mode fiber. Experimental results provide some room for discussion on this novel front-hauling technique.},\n bibtype = {inproceedings},\n author = {Combi, L. and Gatto, A. and Martinelli, M. and Parolari, P. and Spagnolini, U.},\n doi = {10.1109/GLOCOMW.2015.7414131},\n booktitle = {2015 IEEE Globecom Workshops, GC Wkshps 2015 - Proceedings}\n}\n\n © 2015 IEEE. Future (5G) mobile networks aim to pervasivity (cell size < 1 km) and high data-rate ( > 20-50 Mb/s), centralized radio access network (CRAN) is the most promising paradigm that aggregates the baseband processing to comply with dense antennas deployment. Even if optical networks are the most promising solution for CRAN front-hauling, there is the need to investigate alternative and/or complementary solutions to digital front-hauling (e.g., CPRI protocol) that can make a parsimonious usage of the optical bandwidth and related electronics. Abstract - In this framework, here we propose a new waveform coding for the transport of analog RAN signals by employing the pulse width modulation (PWM) for optical front-hauling. At the transmitter, the radio-signal is sampled and mapped onto the duration of an on/off optical signal, at the fiber receiving-end each PW optical modulated sample is digitized so that the overall communication is transparent. Conceptually, the front- hauling PW waveform is equivalent to split sampling (at transmitter) and quantization (at receiver) so as to avoid the bandwidth expansion of CPRI digitalization. Pros and cons of PW waveforms for CRAN front-hauling are evaluated by investigating the outcomes of an in-lab experiment transmitting 100-MHz RF signals with 16QAM modulation up to 20-km standard single mode fiber. Experimental results provide some room for discussion on this novel front-hauling technique.\n
\n\n\n\n \n\n \n \n \n \n \n Build-up and burst-mode of an O-band RSOA-based self-seeded transmitter.\n \n \n \n\n\n \n Brunero, M.; Parolari, P.; Marazzi, L.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n In IET Conference Publications, volume 2015, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Build-up and burst-mode of an O-band RSOA-based self-seeded transmitter},\n type = {inproceedings},\n year = {2015},\n volume = {2015},\n issue = {CP667},\n id = {aca9cef9-95d3-32ed-a20b-4d6f9ca34896},\n created = {2017-10-13T10:09:17.667Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.667Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {In this contribution we performed the initial experimental evaluation of an RSOA-based self-seeded transmitter operating in burst-mode at 2.5 Gb/s. We identified, during the cavity build-up, different evolution of the optical power, which reaches steady-state faster than the spectrum. The time required to the optical power to reach the steady state depends on the total cavity losses. BER curves explore both initial and full-regime roundtrips to determine the effective "turn-on" time of the transmitter.},\n bibtype = {inproceedings},\n author = {Brunero, M. and Parolari, P. and Marazzi, L. and Brenot, R. and Martinelli, M.},\n doi = {10.1049/cp.2015.0117},\n booktitle = {IET Conference Publications}\n}\n\n In this contribution we performed the initial experimental evaluation of an RSOA-based self-seeded transmitter operating in burst-mode at 2.5 Gb/s. We identified, during the cavity build-up, different evolution of the optical power, which reaches steady-state faster than the spectrum. The time required to the optical power to reach the steady state depends on the total cavity losses. BER curves explore both initial and full-regime roundtrips to determine the effective \"turn-on\" time of the transmitter.\n
\n\n\n\n \n\n \n \n \n \n \n O-band 12-Gb/s FDM-WDM PON transmission exploiting self-seeding in reflective semiconductor optical amplifiers.\n \n \n \n\n\n \n Gatto, A.; Brunero, M.; Parolari, P.; Martelli, P.; Brenot, R.; and Boffi, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2015-Augus, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {O-band 12-Gb/s FDM-WDM PON transmission exploiting self-seeding in reflective semiconductor optical amplifiers},\n type = {inproceedings},\n year = {2015},\n keywords = {Frequency division multiplexing,RSOA,Self-seeding,WDM PON},\n volume = {2015-Augus},\n id = {5d500f1b-c7fa-3ec4-9096-7d033d36037a},\n created = {2017-10-13T10:09:18.356Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.356Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 IEEE. WDM-PON colourless transmitters based on RSOA self-seeding (SS) proved to be compact self-tuning transceivers up to 10 Gb/s. We employ frequency-division multiplexing (FDM) with different subcarrier modulations to effectively exploit a 2-GHz limited O-band RSOA in a SS architecture, achieving, for the first time to the best of our knowledge, 12-Gb/s transmission over 10-km SSMF. Due to O-band low chromatic dispersion, propagation distance is only limited by the power budget, which determines the sub-bands signal to noise ratio, reducing equalization effectiveness. The paper presents sub-bands allocation, measured constellation diagrams and BERs, which demonstrate the promising capability of the combination of FDM and RSOA SS to obtain beyond 10-Gb/s self-tuning WDM PON transmitters.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Brunero, M. and Parolari, P. and Martelli, P. and Brenot, R. and Boffi, P.},\n doi = {10.1109/ICTON.2015.7193397},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2015 IEEE. WDM-PON colourless transmitters based on RSOA self-seeding (SS) proved to be compact self-tuning transceivers up to 10 Gb/s. We employ frequency-division multiplexing (FDM) with different subcarrier modulations to effectively exploit a 2-GHz limited O-band RSOA in a SS architecture, achieving, for the first time to the best of our knowledge, 12-Gb/s transmission over 10-km SSMF. Due to O-band low chromatic dispersion, propagation distance is only limited by the power budget, which determines the sub-bands signal to noise ratio, reducing equalization effectiveness. The paper presents sub-bands allocation, measured constellation diagrams and BERs, which demonstrate the promising capability of the combination of FDM and RSOA SS to obtain beyond 10-Gb/s self-tuning WDM PON transmitters.\n
\n\n\n\n \n\n \n \n \n \n \n Hybrid OFDM experimentation based on arrayed waveguide grating for all-optical FFT implementation in PON architecture.\n \n \n \n\n\n \n Morosi, J.; Boffi, P.; Martelli, P.; Parolari, P.; Cincotti, G.; Shimizu, S.; and Wada, N.\n\n\n \n\n\n\n Electronics Letters, 51(22). 2015.\n \n\n\n\n
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\n\n\n@article{\n title = {Hybrid OFDM experimentation based on arrayed waveguide grating for all-optical FFT implementation in PON architecture},\n type = {article},\n year = {2015},\n volume = {51},\n id = {20d54e34-2b15-3204-af31-ebe922a835db},\n created = {2017-10-13T10:09:18.736Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.736Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 The Institution of Engineering and Technology. A hybrid optical frequency division multiplexing (OFDM) system based on the electrical generation of the OFDM signal at the transmitter and on the all-optical demultiplexing of the OFDM subcarriers is experimentally demonstrated by exploiting a purposely designed arrayed waveguide grating (AWG) with 12.5 GHz frequency spacing. The AWG passively and all-optically processes a 3-subcarrier OFDM signal with fast Fourier transform functionalities, demultiplexing it into three 12.5 Gbit/s on off keyed data at the corresponding output ports, which are then connected to the optical network users. Transmission over a 40 km feeder link is experimentally demonstrated. Taking into account the AWG's available 16 ports and four 3-subcarrier OFDM signal generators modulating independent wavelength carriers, a passive optical network (PON) architecture can be realised serving 12 optical network units with 150 Gbit/s total aggregate downstream capacity.},\n bibtype = {article},\n author = {Morosi, J. and Boffi, P. and Martelli, P. and Parolari, P. and Cincotti, G. and Shimizu, S. and Wada, N.},\n doi = {10.1049/el.2015.2534},\n journal = {Electronics Letters},\n number = {22}\n}\n\n © 2015 The Institution of Engineering and Technology. A hybrid optical frequency division multiplexing (OFDM) system based on the electrical generation of the OFDM signal at the transmitter and on the all-optical demultiplexing of the OFDM subcarriers is experimentally demonstrated by exploiting a purposely designed arrayed waveguide grating (AWG) with 12.5 GHz frequency spacing. The AWG passively and all-optically processes a 3-subcarrier OFDM signal with fast Fourier transform functionalities, demultiplexing it into three 12.5 Gbit/s on off keyed data at the corresponding output ports, which are then connected to the optical network users. Transmission over a 40 km feeder link is experimentally demonstrated. Taking into account the AWG's available 16 ports and four 3-subcarrier OFDM signal generators modulating independent wavelength carriers, a passive optical network (PON) architecture can be realised serving 12 optical network units with 150 Gbit/s total aggregate downstream capacity.\n
\n\n\n\n \n\n \n \n \n \n \n Demonstration and performance investigation of hybrid OFDM systems for optical access network applications.\n \n \n \n\n\n \n Boffi, P.; Martelli, P.; Parolari, P.; Blundetto, L.; Morosi, J.; and Cincott, G.\n\n\n \n\n\n\n IEEE Photonics Journal, 7(1). 2015.\n \n\n\n\n
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\n\n\n@article{\n title = {Demonstration and performance investigation of hybrid OFDM systems for optical access network applications},\n type = {article},\n year = {2015},\n keywords = {Fiber optics communications,OFDM,array waveguide devices},\n volume = {7},\n id = {24d0aa48-e0f2-3884-9359-b5802699b05b},\n created = {2017-10-13T10:09:19.410Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.410Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 IEEE. We propose a hybrid solution to exploit the capabilities of the optical orthogonal frequency-division multiplexing (OFDM) for passive optical network applications implemented by the electronic generation of the OFDM signal at the transmitter and by the all-optical demultiplexing of the OFDM subcarriers at the remote node by means of a passive element, such as suitable arrayed waveguide grating, performing the fast Fourier transform (FFT) in the optical domain. Drastic simplicity at the optical network unit is achieved with neither coherent detection nor any high-speed electronics, allowing an effective exploitation of all the available transmission spectra. By means of simulations and preliminary experimentation, we demonstrate 4 × 10-Gb/s transmission over more than 40-km standard single-mode fiber, the main limitation to the number of subcarriers being the employed device's actual electronic bandwidth.},\n bibtype = {article},\n author = {Boffi, P. and Martelli, P. and Parolari, P. and Blundetto, L. and Morosi, J. and Cincott, G.},\n doi = {10.1109/JPHOT.2014.2381651},\n journal = {IEEE Photonics Journal},\n number = {1}\n}\n\n © 2015 IEEE. We propose a hybrid solution to exploit the capabilities of the optical orthogonal frequency-division multiplexing (OFDM) for passive optical network applications implemented by the electronic generation of the OFDM signal at the transmitter and by the all-optical demultiplexing of the OFDM subcarriers at the remote node by means of a passive element, such as suitable arrayed waveguide grating, performing the fast Fourier transform (FFT) in the optical domain. Drastic simplicity at the optical network unit is achieved with neither coherent detection nor any high-speed electronics, allowing an effective exploitation of all the available transmission spectra. By means of simulations and preliminary experimentation, we demonstrate 4 × 10-Gb/s transmission over more than 40-km standard single-mode fiber, the main limitation to the number of subcarriers being the employed device's actual electronic bandwidth.\n
\n\n\n\n \n\n \n \n \n \n \n Self-seeded RSOAs WDM PON field trial for business and mobile fronthaul applications.\n \n \n \n\n\n \n Saliou, F.; Simon, G.; Chanclou, P.; Brunero, M.; Marazzi, L.; Parolari, P.; Martinelli, M.; Brenot, R.; Maho, A.; Barbet, S.; Gavioli, G.; Parladori, G.; Gebrewold, S.; and Leuthold, J.\n\n\n \n\n\n\n In Optical Fiber Communication Conference, OFC 2015, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Self-seeded RSOAs WDM PON field trial for business and mobile fronthaul applications},\n type = {inproceedings},\n year = {2015},\n id = {9740047c-b7d8-3c04-8353-4588e4caf676},\n created = {2017-10-13T10:09:22.758Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.758Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© OSA 2015. GEth, CPRI and 10 Gbit/s transmissions are experimented using amplified and standard self-seeded RSOA WDM PON systems. A field trial setup was exploited to test the system performance in terms of reach and optical budget.},\n bibtype = {inproceedings},\n author = {Saliou, F. and Simon, G. and Chanclou, P. and Brunero, M. and Marazzi, L. and Parolari, P. and Martinelli, M. and Brenot, R. and Maho, A. and Barbet, S. and Gavioli, G. and Parladori, G. and Gebrewold, S. and Leuthold, J.},\n booktitle = {Optical Fiber Communication Conference, OFC 2015}\n}\n\n © OSA 2015. GEth, CPRI and 10 Gbit/s transmissions are experimented using amplified and standard self-seeded RSOA WDM PON systems. A field trial setup was exploited to test the system performance in terms of reach and optical budget.\n
\n\n\n\n \n\n \n \n \n \n \n 125-km long cavity based on self-seeded RSOAs colorless sources for 2.5-Gb/s DWDM networks.\n \n \n \n\n\n \n Saliou, F.; Simon, G.; Chanclou, P.; Brunero, M.; Marazzi, L.; Parolari, P.; Martinelli, M.; Brenot, R.; Maho, A.; Barbet, S.; Gavioli, G.; Parladori, G.; Gebrewold, S.; and Leuthold, J.\n\n\n \n\n\n\n Journal of Lightwave Technology, 33(8). 2015.\n \n\n\n\n
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\n\n\n@article{\n title = {125-km long cavity based on self-seeded RSOAs colorless sources for 2.5-Gb/s DWDM networks},\n type = {article},\n year = {2015},\n keywords = {Optical fiber communication,Semiconductor lasers,Semiconductor optical amplifiers,WDM networks},\n volume = {33},\n id = {b8bac615-1481-3cc3-b7b8-e9c7ee0385c0},\n created = {2017-10-13T10:09:22.877Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.877Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 IEEE. The laser behavior of reflective semiconductor optical amplifier self-seeded sources is investigated. 2.5-Gb/s transmission is realized with optical cavities of 10, 26, 100, and 125 km for access and metropolitan networks, realizing the longest amplified self-seeded external cavity laser. Moreover, Gigabit Ethernet, common public radio interface, and 2.5-Gb/s transmissions are experimented using amplified self-seeded reflective semiconductor optical amplifier wavelength division multiplexing passive optical networks systems. A field trial setup is exploited to test the system performance in terms of reach and optical budget.},\n bibtype = {article},\n author = {Saliou, F. and Simon, G. and Chanclou, P. and Brunero, M. and Marazzi, L. and Parolari, P. and Martinelli, M. and Brenot, R. and Maho, A. and Barbet, S. and Gavioli, G. and Parladori, G. and Gebrewold, S. and Leuthold, J.},\n doi = {10.1109/JLT.2014.2384397},\n journal = {Journal of Lightwave Technology},\n number = {8}\n}\n\n © 2015 IEEE. The laser behavior of reflective semiconductor optical amplifier self-seeded sources is investigated. 2.5-Gb/s transmission is realized with optical cavities of 10, 26, 100, and 125 km for access and metropolitan networks, realizing the longest amplified self-seeded external cavity laser. Moreover, Gigabit Ethernet, common public radio interface, and 2.5-Gb/s transmissions are experimented using amplified self-seeded reflective semiconductor optical amplifier wavelength division multiplexing passive optical networks systems. A field trial setup is exploited to test the system performance in terms of reach and optical budget.\n
\n\n\n\n \n\n \n \n \n \n \n C-and O-band operation of RSOA WDM PON self-seeded transmitters up to 10 Gb/s [Invited].\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Martinelli, M.; Brenot, R.; Maho, A.; Barbet, S.; Gavioli, G.; Simon, G.; Le, S.; Saliou, F.; and Chanclou, P.\n\n\n \n\n\n\n Journal of Optical Communications and Networking, 7(2). 2015.\n \n\n\n\n
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\n\n\n@article{\n title = {C-and O-band operation of RSOA WDM PON self-seeded transmitters up to 10 Gb/s [Invited]},\n type = {article},\n year = {2015},\n keywords = {Chromatic dispersion,Colorless optical transmitter,Reflective semiconductor optical amplifier (RSOA),WDM passive optical networks (PON)},\n volume = {7},\n id = {cd954b11-0bba-34c2-889b-012ede9a28fe},\n created = {2017-10-13T10:09:23.228Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.228Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 Optical Society of America. We propose a network-embedded colorless self-tuning transmitter for wavelength division multiplexed (WDM) networks based on self-seeding in reflective semiconductor optical amplifiers (RSOAs). We compare up to a 10-Gb/s data rate in either O-band or C-band operation. In particular, the transmitter exploits a two-Faraday rotator configuration to ensure polarization-insensitive operation and allowing for the exploitation of high-gain C-and O-band RSOAs, which present a very high polarization-dependent gain. Two different multiplexers and various lengths of drop fibers constituted the networkembedded transmitters in order to evaluate various dispersion load influence on cavity buildup. Moreover, transmission over standard single-mode feeder fiber has been evaluated both at 2.5 and 10 Gb/s to compare the performance in both bands, confirming the absence of chromatic dispersion penalties for the O-band operation.},\n bibtype = {article},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Martinelli, M. and Brenot, R. and Maho, A. and Barbet, S. and Gavioli, G. and Simon, G. and Le, S. and Saliou, F. and Chanclou, P.},\n doi = {10.1364/JOCN.7.00A249},\n journal = {Journal of Optical Communications and Networking},\n number = {2}\n}\n\n © 2015 Optical Society of America. We propose a network-embedded colorless self-tuning transmitter for wavelength division multiplexed (WDM) networks based on self-seeding in reflective semiconductor optical amplifiers (RSOAs). We compare up to a 10-Gb/s data rate in either O-band or C-band operation. In particular, the transmitter exploits a two-Faraday rotator configuration to ensure polarization-insensitive operation and allowing for the exploitation of high-gain C-and O-band RSOAs, which present a very high polarization-dependent gain. Two different multiplexers and various lengths of drop fibers constituted the networkembedded transmitters in order to evaluate various dispersion load influence on cavity buildup. Moreover, transmission over standard single-mode feeder fiber has been evaluated both at 2.5 and 10 Gb/s to compare the performance in both bands, confirming the absence of chromatic dispersion penalties for the O-band operation.\n
\n\n\n\n \n\n \n \n \n \n \n Demystification of self-seeded WDM access.\n \n \n \n\n\n \n Brenot, R.; Maho, A.; Barbet, S.; Marazzi, L.; Parolari, P.; Martinelli, M.; Gebrewold, S.; Leuthold, J.; Simon, G.; Saliou, F.; and Chanclou, P.\n\n\n \n\n\n\n In Optical Fiber Communication Conference, OFC 2015, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Demystification of self-seeded WDM access},\n type = {inproceedings},\n year = {2015},\n id = {19ef69c2-d7b1-3ec6-a683-7857e00008dc},\n created = {2017-10-13T10:09:23.283Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.283Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© OSA 2015. The operating principles of a self-seeded cavity are explained, and its main characteristics are described. Some practical implementation cases are also discussed.},\n bibtype = {inproceedings},\n author = {Brenot, R. and Maho, A. and Barbet, S. and Marazzi, L. and Parolari, P. and Martinelli, M. and Gebrewold, S. and Leuthold, J. and Simon, G. and Saliou, F. and Chanclou, P.},\n booktitle = {Optical Fiber Communication Conference, OFC 2015}\n}\n\n © OSA 2015. The operating principles of a self-seeded cavity are explained, and its main characteristics are described. Some practical implementation cases are also discussed.\n
\n\n\n\n \n\n \n \n \n \n \n Demystification of self-seeded WDM access.\n \n \n \n\n\n \n Brenot, R.; Maho, A.; Barbet, S.; Marazzi, L.; Parolari, P.; Martinelli, M.; Gebrewold, S.; Leuthold, J.; Simon, G.; Saliou, F.; and Chanclou, P.\n\n\n \n\n\n\n In Conference on Optical Fiber Communication, Technical Digest Series, volume 2015-June, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Demystification of self-seeded WDM access},\n type = {inproceedings},\n year = {2015},\n volume = {2015-June},\n id = {bf7ce013-13d2-33f4-be1f-510cb7d8a8eb},\n created = {2017-10-13T10:09:23.498Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.498Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 OSA. The operating principles of a self-seeded cavity are explained, and its main characteristics are described. Some practical implementation cases are also discussed.},\n bibtype = {inproceedings},\n author = {Brenot, R. and Maho, A. and Barbet, S. and Marazzi, L. and Parolari, P. and Martinelli, M. and Gebrewold, S. and Leuthold, J. and Simon, G. and Saliou, F. and Chanclou, P.},\n booktitle = {Conference on Optical Fiber Communication, Technical Digest Series}\n}\n\n © 2015 OSA. The operating principles of a self-seeded cavity are explained, and its main characteristics are described. Some practical implementation cases are also discussed.\n
\n\n\n\n \n\n \n \n \n \n \n Self-seeded RSOA-fiber cavity lasers vs. ASE spectrum-sliced or externally seeded transmitters-A comparative study.\n \n \n \n\n\n \n Gebrewold, S.; Bonjour, R.; Barbet, S.; Maho, A.; Brenot, R.; Chanclou, P.; Brunero, M.; Marazzi, L.; Parolari, P.; Totovic, A.; Gvozdic, D.; Hillerkuss, D.; Hafner, C.; and Leuthold, J.\n\n\n \n\n\n\n Applied Sciences (Switzerland), 5(4). 2015.\n \n\n\n\n
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\n\n\n@article{\n title = {Self-seeded RSOA-fiber cavity lasers vs. ASE spectrum-sliced or externally seeded transmitters-A comparative study},\n type = {article},\n year = {2015},\n keywords = {ASE spectrum sliced,Colorless WDM-PON,Externally seeded RSOA,Reflective semiconductor optical amplifier,Self-seeded RSOA fiber cavity laser},\n volume = {5},\n id = {bcbc37f9-156f-3a33-a64e-22c0aaa59dee},\n created = {2017-10-13T10:09:23.639Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.639Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 by the authors; licensee MDPI, Basel, Switzerland. Reflective semiconductor optical amplifier fiber cavity lasers (RSOA-FCLs) are appealing, colorless, self-seeded, self-tuning and cost-efficient upstream transmitters. They are of interest for wavelength division multiplexed passive optical networks (WDM-PONs) based links. In this paper, we compare RSOA-FCLs with alternative colorless sources, namely the amplified spontaneous emission (ASE) spectrum-sliced and the externally seeded RSOAs. We compare the differences in output power, signal-to-noise ratio (SNR), relative intensity noise (RIN), frequency response and transmission characteristics of these three sources. It is shown that an RSOA-FCL offers a higher output power over an ASE spectrum-sliced source with SNR, RIN and frequency response characteristics halfway between an ASE spectrum-sliced and a more expensive externally seeded RSOA. The results show that the RSOA-FCL is a cost-efficient WDM-PON upstream source, borrowing simplicity and cost-efficiency from ASE spectrum slicing with characteristics that are, in many instances, good enough to perform short-haul transmission. To substantiate our statement and to quantitatively compare the potential of the three schemes, we perform data transmission experiments at 5 and 10 Gbit/s.},\n bibtype = {article},\n author = {Gebrewold, S.A. and Bonjour, R. and Barbet, S. and Maho, A. and Brenot, R. and Chanclou, P. and Brunero, M. and Marazzi, L. and Parolari, P. and Totovic, A. and Gvozdic, D. and Hillerkuss, D. and Hafner, C. and Leuthold, J.},\n doi = {10.3390/app5041922},\n journal = {Applied Sciences (Switzerland)},\n number = {4}\n}\n\n © 2015 by the authors; licensee MDPI, Basel, Switzerland. Reflective semiconductor optical amplifier fiber cavity lasers (RSOA-FCLs) are appealing, colorless, self-seeded, self-tuning and cost-efficient upstream transmitters. They are of interest for wavelength division multiplexed passive optical networks (WDM-PONs) based links. In this paper, we compare RSOA-FCLs with alternative colorless sources, namely the amplified spontaneous emission (ASE) spectrum-sliced and the externally seeded RSOAs. We compare the differences in output power, signal-to-noise ratio (SNR), relative intensity noise (RIN), frequency response and transmission characteristics of these three sources. It is shown that an RSOA-FCL offers a higher output power over an ASE spectrum-sliced source with SNR, RIN and frequency response characteristics halfway between an ASE spectrum-sliced and a more expensive externally seeded RSOA. The results show that the RSOA-FCL is a cost-efficient WDM-PON upstream source, borrowing simplicity and cost-efficiency from ASE spectrum slicing with characteristics that are, in many instances, good enough to perform short-haul transmission. To substantiate our statement and to quantitatively compare the potential of the three schemes, we perform data transmission experiments at 5 and 10 Gbit/s.\n
\n\n\n\n \n\n \n \n \n \n \n WDM PON RSOA-based self-tuning transmitters: An insight from the EU FP7 ERMES project.\n \n \n \n\n\n \n Brunero, M.; Parolari, P.; Marazzi, L.; Martinelli, M.; Brenot, R.; Maho, A.; Barbet, S.; Gavioli, G.; Parladori, G.; Gebrewold, S.; Leuthold, J.; Saliou, F.; Simon, G.; and Chanclou, P.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, volume 2015-Augus, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {WDM PON RSOA-based self-tuning transmitters: An insight from the EU FP7 ERMES project},\n type = {inproceedings},\n year = {2015},\n keywords = {Field trial,Fronthaul,RSOA,Self-seeding,WDM PON},\n volume = {2015-Augus},\n id = {8e2c6a93-7b95-319e-aeff-644a561dc962},\n created = {2017-10-13T10:09:23.816Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.816Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 IEEE. We present the final results of the EU FP7 ERMES project, which focused on the development of a WDM-PON colourless self-tuning transmitter based on RSOA self-seeding. Measurements obtained with a packaged O-band RSOA in a SFP+ compatible transmitter are reported at 1.25, 2.5 and 10 Gb/s for various drop fibre lengths, up to 6.3 km and 1 km respectively. We successfully demonstrated transmission over more than 20-km SSMF with bit error rates below the FEC limit (3·10 < sup > -3 < /sup > ). The transmission length is limited only by the power budget while the chromatic dispersion has no impact, even at 10 Gb/s. Finally, we give an overview of the BER field trail measures performed with the 18-km fibre loops over the city of Lannion (France). We tested the ERMES transmitter at 2.5 Gb/s and 10 Gb/s with various PRBS lengths to prepare GEth and CPRI tests. Field trial results resembled laboratory tests, successfully obtaining transmission over up to 2 fibre loops.},\n bibtype = {inproceedings},\n author = {Brunero, M. and Parolari, P. and Marazzi, L. and Martinelli, M. and Brenot, R. and Maho, A. and Barbet, S. and Gavioli, G. and Parladori, G. and Gebrewold, S. and Leuthold, J. and Saliou, F. and Simon, G. and Chanclou, P.},\n doi = {10.1109/ICTON.2015.7193396},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n © 2015 IEEE. We present the final results of the EU FP7 ERMES project, which focused on the development of a WDM-PON colourless self-tuning transmitter based on RSOA self-seeding. Measurements obtained with a packaged O-band RSOA in a SFP+ compatible transmitter are reported at 1.25, 2.5 and 10 Gb/s for various drop fibre lengths, up to 6.3 km and 1 km respectively. We successfully demonstrated transmission over more than 20-km SSMF with bit error rates below the FEC limit (3·10 < sup > -3 < /sup > ). The transmission length is limited only by the power budget while the chromatic dispersion has no impact, even at 10 Gb/s. Finally, we give an overview of the BER field trail measures performed with the 18-km fibre loops over the city of Lannion (France). We tested the ERMES transmitter at 2.5 Gb/s and 10 Gb/s with various PRBS lengths to prepare GEth and CPRI tests. Field trial results resembled laboratory tests, successfully obtaining transmission over up to 2 fibre loops.\n
\n\n\n\n \n\n \n \n \n \n \n Self-seeded RSOAs WDM PON field trial for business and mobile fronthaul applications.\n \n \n \n\n\n \n Saliou, F.; Simon, G.; Chanclou, P.; Brunero, M.; Marazzi, L.; Parolari, P.; Martinelli, M.; Brenot, R.; Maho, A.; Barbet, S.; Gavioli, G.; Parladori, G.; Gebrewold, S.; and Leuthold, J.\n\n\n \n\n\n\n In Conference on Optical Fiber Communication, Technical Digest Series, volume 2015-June, 2015. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Self-seeded RSOAs WDM PON field trial for business and mobile fronthaul applications},\n type = {inproceedings},\n year = {2015},\n volume = {2015-June},\n id = {b877d19a-bf4a-3a1c-94d6-a6db96261026},\n created = {2017-10-13T10:09:23.996Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.996Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2015 OSA. GEth, CPRI and 10 Gbit/s transmissions are experimented using amplified and standard self-seeded RSOA WDM PON systems. A field trial setup was exploited to test the system performance in terms of reach and optical budget.},\n bibtype = {inproceedings},\n author = {Saliou, F. and Simon, G. and Chanclou, P. and Brunero, M. and Marazzi, L. and Parolari, P. and Martinelli, M. and Brenot, R. and Maho, A. and Barbet, S. and Gavioli, G. and Parladori, G. and Gebrewold, S. and Leuthold, J.},\n booktitle = {Conference on Optical Fiber Communication, Technical Digest Series}\n}\n\n © 2015 OSA. GEth, CPRI and 10 Gbit/s transmissions are experimented using amplified and standard self-seeded RSOA WDM PON systems. A field trial setup was exploited to test the system performance in terms of reach and optical budget.\n
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\n \n \n\n \n \n \n \n \n High-capacity access networks based on hybrid all-optical OFDM PON.\n \n \n \n\n\n \n Boffi, P.; Martelli, P.; Parolari, P.; Marazzi, L.; Blundetto, L.; Martinelli, M.; and Cincotti, G.\n\n\n \n\n\n\n In 2014 19th European Conference on Networks and Optical Communications, NOC 2014, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {High-capacity access networks based on hybrid all-optical OFDM PON},\n type = {inproceedings},\n year = {2014},\n keywords = {OFDM,PON,WDM,access network},\n id = {30e23beb-3142-35d0-b6ef-d1f3ea6a9fd2},\n created = {2017-10-13T10:09:18.675Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.675Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2014 IEEE. An innovative architecture for access PONs is proposed to exploit the capabilities of coherent OFDM in terms of efficient use of the spectrum and fine granularity in flexible resource sharing, but maintaining simple implementation. The solution is based on the reliance on electronic DSP for the generation of the OFDM-modulated subcarriers at the transmitter and on the FFT implementation at the remote node by means of an all-optical and passive element (for example a suitable AWG) in order to demultiplex the OFDM subcarriers. By means of simulations we demonstrate the achievable performance taking into account the constraints due to the use of realistic devices and components. Different architectures realized by the proposed hybrid scheme are shown, both to demonstrate the compliance with usual PONs based other multiplexing techniques and to guarantee also unbundling operation.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Martelli, P. and Parolari, P. and Marazzi, L. and Blundetto, L. and Martinelli, M. and Cincotti, G.},\n doi = {10.1109/NOC.2014.6996827},\n booktitle = {2014 19th European Conference on Networks and Optical Communications, NOC 2014}\n}\n\n © 2014 IEEE. An innovative architecture for access PONs is proposed to exploit the capabilities of coherent OFDM in terms of efficient use of the spectrum and fine granularity in flexible resource sharing, but maintaining simple implementation. The solution is based on the reliance on electronic DSP for the generation of the OFDM-modulated subcarriers at the transmitter and on the FFT implementation at the remote node by means of an all-optical and passive element (for example a suitable AWG) in order to demultiplex the OFDM subcarriers. By means of simulations we demonstrate the achievable performance taking into account the constraints due to the use of realistic devices and components. Different architectures realized by the proposed hybrid scheme are shown, both to demonstrate the compliance with usual PONs based other multiplexing techniques and to guarantee also unbundling operation.\n
\n\n\n\n \n\n \n \n \n \n \n Highly-nonlinear RSOA RIN compression.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boletti, A.; Gatto, A.; Martinelli, M.; and Brenot, R.\n\n\n \n\n\n\n In 2014 19th European Conference on Networks and Optical Communications, NOC 2014, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Highly-nonlinear RSOA RIN compression},\n type = {inproceedings},\n year = {2014},\n keywords = {RIN compression,RSOA,WDM PON,access network,gain saturation},\n id = {7f2f22bf-bd19-3f0b-96b9-c8df2979f689},\n created = {2017-10-13T10:09:18.842Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.842Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2014 IEEE. It has been recently experimentally and theoretically demonstrated that three nonlinear operation regimes can be observed in reflective semiconductor amplifiers in relation to gain saturation and, consequently, in relation to the bleaching of the modulation portion of the injected signal while the injected power increases. For moderately high-injected power, the modulation component of the signal is partially bleached, i.e., the extinction ratio (ER) is reduced. For higher input power, the modulation is exactly cancelled, i.e., the ER is almost 0 dB. Finally a further increase of injected power determines modulation inversion, with consequent eye re-opening. While the first two phenomena can be observed also in SOAs, though usually at higher injected power, the last regime is specific of RSOAs. In highly nonlinear RSOA the simultaneous presence of two waves, the incoming one and the reflected, which locally compete for gain along the device length, defines areas of strong depletion. The RSOA noise reduction capability, which has been widely exploited in passive optical networks (PON) topologies, is achieved by compressing the optical intensity fluctuations associated to the injected signal. This capability relies on the same mechanism governing gain saturation and modulation bleaching. Thus it is not surprising that the same nonlinear regimes observed in relation to gain saturation can be evidenced in relation to relative intensity noise (RIN) compression. In order to highlight this behavior and its consequences on PON design, we experimentally emulated a spectrum-sliced wavelength division multiplexing (WDM) PON topology. The impact on RIN of the injection into the RSOA and subsequent filtering actions operated by arrayed waveguide gratings (AWG) placed at the remote node and at the optical line terminal is evaluated both experimentally and by simulations. RIN measurements are performed in time domain exploiting a real time oscilloscope and in the spectral domain using an electrical spectrum analyzer in different point of the WDM PON topology to enlighten the different contributions to noise. Simulations have been also using an RSOA simple model, which has been realized with the commercial software, OptSim by RSOFT, and has been implemented by matching the data collected from the RSOA gain experimental characterization.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boletti, A. and Gatto, A. and Martinelli, M. and Brenot, R.},\n doi = {10.1109/NOC.2014.6996838},\n booktitle = {2014 19th European Conference on Networks and Optical Communications, NOC 2014}\n}\n\n © 2014 IEEE. It has been recently experimentally and theoretically demonstrated that three nonlinear operation regimes can be observed in reflective semiconductor amplifiers in relation to gain saturation and, consequently, in relation to the bleaching of the modulation portion of the injected signal while the injected power increases. For moderately high-injected power, the modulation component of the signal is partially bleached, i.e., the extinction ratio (ER) is reduced. For higher input power, the modulation is exactly cancelled, i.e., the ER is almost 0 dB. Finally a further increase of injected power determines modulation inversion, with consequent eye re-opening. While the first two phenomena can be observed also in SOAs, though usually at higher injected power, the last regime is specific of RSOAs. In highly nonlinear RSOA the simultaneous presence of two waves, the incoming one and the reflected, which locally compete for gain along the device length, defines areas of strong depletion. The RSOA noise reduction capability, which has been widely exploited in passive optical networks (PON) topologies, is achieved by compressing the optical intensity fluctuations associated to the injected signal. This capability relies on the same mechanism governing gain saturation and modulation bleaching. Thus it is not surprising that the same nonlinear regimes observed in relation to gain saturation can be evidenced in relation to relative intensity noise (RIN) compression. In order to highlight this behavior and its consequences on PON design, we experimentally emulated a spectrum-sliced wavelength division multiplexing (WDM) PON topology. The impact on RIN of the injection into the RSOA and subsequent filtering actions operated by arrayed waveguide gratings (AWG) placed at the remote node and at the optical line terminal is evaluated both experimentally and by simulations. RIN measurements are performed in time domain exploiting a real time oscilloscope and in the spectral domain using an electrical spectrum analyzer in different point of the WDM PON topology to enlighten the different contributions to noise. Simulations have been also using an RSOA simple model, which has been realized with the commercial software, OptSim by RSOFT, and has been implemented by matching the data collected from the RSOA gain experimental characterization.\n
\n\n\n\n \n\n \n \n \n \n \n Build-up analysis of an RSOA-based self-seeded transmitter.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Mellerio, A.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Build-up analysis of an RSOA-based self-seeded transmitter},\n type = {inproceedings},\n year = {2014},\n id = {5cfb2420-910e-387e-99e9-a7f384bd2dd3},\n created = {2017-10-13T10:09:19.072Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.072Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2014 Systematic Paris Region Systems and ICT Cluster. A different approach, focusing both on the power build-up and the optical spectrum build-up of the RSOA-based self-seeded transmitter, uncovers that steady-state is reached later than expected. Initial roundtrips are analysed to enlighten the mechanism of radiation formation from ASE.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Mellerio, A. and Brenot, R. and Martinelli, M.},\n doi = {10.1109/ECOC.2014.6964126},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n © 2014 Systematic Paris Region Systems and ICT Cluster. A different approach, focusing both on the power build-up and the optical spectrum build-up of the RSOA-based self-seeded transmitter, uncovers that steady-state is reached later than expected. Initial roundtrips are analysed to enlighten the mechanism of radiation formation from ASE.\n
\n\n\n\n \n\n \n \n \n \n \n Relative intensity noise suppression in reflective SOAs.\n \n \n \n\n\n \n Marazzi, L.; Boletti, A.; Parolari, P.; Gatto, A.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n Optics Communications, 318. 2014.\n \n\n\n\n
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\n\n\n@article{\n title = {Relative intensity noise suppression in reflective SOAs},\n type = {article},\n year = {2014},\n keywords = {Reflective semiconductor optical amplifier (RSOA),Relative intensity noise (RIN),Wavelength division multiplexed passive optical ne},\n volume = {318},\n id = {99da86f5-6ec2-3bd2-8f7a-c21dad535bd2},\n created = {2017-10-13T10:09:19.346Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.346Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The reflective semiconductor optical amplifier (RSOA) capability to compress the relative intensity noise (RIN) is well-known and widely exploited in wavelength division multiplexing passive optical networks (WDM PON). While this feature has been previously analysed using SOA theory, in this paper we show that RSOAs present specific gain saturation properties. According to the injected power, three nonlinear operation regimes can be highlighted: the first one, where RIN is moderately compressed, the second one, where RIN maximum compression takes place, and the final one, where RIN grows again, this last regime being RSOA specific. We focus on a spectrum-sliced WDM PON classical topology, evaluating the impact of the injection process and filtering. RSOA injection and optical filtering have opposite effects on the RIN: by injection into the RSOA the RIN is reduced, after filtering RIN increases. We experimentally evaluate RIN both in the time and in the spectral domain. A simple numerical model mainly based on the correct reproduction of the component gain behaviour is exploited to verify experimental results. Through our experimental analysis and by simulations, we identify the correct injected power range to best take advantage of the RSOA features. © 2013 Elsevier B.V.},\n bibtype = {article},\n author = {Marazzi, L. and Boletti, A. and Parolari, P. and Gatto, A. and Brenot, R. and Martinelli, M.},\n doi = {10.1016/j.optcom.2013.12.057},\n journal = {Optics Communications}\n}\n\n The reflective semiconductor optical amplifier (RSOA) capability to compress the relative intensity noise (RIN) is well-known and widely exploited in wavelength division multiplexing passive optical networks (WDM PON). While this feature has been previously analysed using SOA theory, in this paper we show that RSOAs present specific gain saturation properties. According to the injected power, three nonlinear operation regimes can be highlighted: the first one, where RIN is moderately compressed, the second one, where RIN maximum compression takes place, and the final one, where RIN grows again, this last regime being RSOA specific. We focus on a spectrum-sliced WDM PON classical topology, evaluating the impact of the injection process and filtering. RSOA injection and optical filtering have opposite effects on the RIN: by injection into the RSOA the RIN is reduced, after filtering RIN increases. We experimentally evaluate RIN both in the time and in the spectral domain. A simple numerical model mainly based on the correct reproduction of the component gain behaviour is exploited to verify experimental results. Through our experimental analysis and by simulations, we identify the correct injected power range to best take advantage of the RSOA features. © 2013 Elsevier B.V.\n
\n\n\n\n \n\n \n \n \n \n \n Experimental evaluation of burst-mode operation of a RSOA-based self-seeded transmitter.\n \n \n \n\n\n \n Brunero, M.; Marazzi, L.; Parolari, P.; Maho, A.; Brenot, R.; and Martinelli, M.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Experimental evaluation of burst-mode operation of a RSOA-based self-seeded transmitter},\n type = {inproceedings},\n year = {2014},\n id = {c62d6347-73cf-3957-abf5-8842ae70e0c4},\n created = {2017-10-13T10:09:20.203Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.203Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2014 Systematic Paris Region Systems and ICT Cluster. We experimentally evaluate burst-mode operation of an RSOA-based self-seeded transmitter at 2.5 Gb/s by recognizing, during the cavity build-up, different evolution of the optical power, which reaches steady-state faster than the spectrum. BER curves explore both initial and full-regime roundtrips.},\n bibtype = {inproceedings},\n author = {Brunero, M. and Marazzi, L. and Parolari, P. and Maho, A. and Brenot, R. and Martinelli, M.},\n doi = {10.1109/ECOC.2014.6964107},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n © 2014 Systematic Paris Region Systems and ICT Cluster. We experimentally evaluate burst-mode operation of an RSOA-based self-seeded transmitter at 2.5 Gb/s by recognizing, during the cavity build-up, different evolution of the optical power, which reaches steady-state faster than the spectrum. BER curves explore both initial and full-regime roundtrips.\n
\n\n\n\n \n\n \n \n \n \n \n 10-Gb/s amplified self-seeding WDM PON transmission exploiting RSOAs.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Gatto, A.; Martinelli, M.; Brenot, R.; Maho, A.; and Barbet, S.\n\n\n \n\n\n\n In 2014 19th European Conference on Networks and Optical Communications, NOC 2014, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {10-Gb/s amplified self-seeding WDM PON transmission exploiting RSOAs},\n type = {inproceedings},\n year = {2014},\n keywords = {RSOA,WDM PON,access network,front haul,self-seeding},\n id = {dff4388f-3dfd-3aaa-b681-1932e2579f96},\n created = {2017-10-13T10:09:20.696Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.696Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2014 IEEE. We present an experimental analysis of a self-tuning colorless ONU transmitter based on amplified self-seeded RSOAs to be exploited in WDM PON fiber networks for fronthaul. The architecture is polarization independent thanks to the exploitation of high and low PDG RSOAs and Faraday rotators. The transmission over different lengths of fiber displaying various dispersive loads is demonstrated at 10 Gb/s evidencing the chromatic dispersion impact on performance.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Gatto, A. and Martinelli, M. and Brenot, R. and Maho, A. and Barbet, S.},\n doi = {10.1109/NOC.2014.6996826},\n booktitle = {2014 19th European Conference on Networks and Optical Communications, NOC 2014}\n}\n\n © 2014 IEEE. We present an experimental analysis of a self-tuning colorless ONU transmitter based on amplified self-seeded RSOAs to be exploited in WDM PON fiber networks for fronthaul. The architecture is polarization independent thanks to the exploitation of high and low PDG RSOAs and Faraday rotators. The transmission over different lengths of fiber displaying various dispersive loads is demonstrated at 10 Gb/s evidencing the chromatic dispersion impact on performance.\n
\n\n\n\n \n\n \n \n \n \n \n Colorless self-seeded fiber cavity laser transmitter for WDM-PON.\n \n \n \n\n\n \n Gebrewold, S.; Marazzi, L.; Parolari, P.; Brunero, M.; Brenot, R.; Hillerkuss, D.; Hafner, C.; and Leuthold, J.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Colorless self-seeded fiber cavity laser transmitter for WDM-PON},\n type = {inproceedings},\n year = {2014},\n id = {8441a13e-6cbc-3c4c-ab57-a863ce03d916},\n created = {2017-10-13T10:09:21.323Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.323Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Colorless, self-seeded km-long fiber cavity RSOA lasers embedded in an access network are investigated for the optimum operation conditions. Theoretical predictions on the proper configuration and the impact of dispersion are supported by experiments. © 2014 OSA.},\n bibtype = {inproceedings},\n author = {Gebrewold, S.A. and Marazzi, L. and Parolari, P. and Brunero, M. and Brenot, R. and Hillerkuss, D. and Hafner, C. and Leuthold, J.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Colorless, self-seeded km-long fiber cavity RSOA lasers embedded in an access network are investigated for the optimum operation conditions. Theoretical predictions on the proper configuration and the impact of dispersion are supported by experiments. © 2014 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Reflective-SOA fiber cavity laser as directly modulated WDM-PON colorless transmitter.\n \n \n \n\n\n \n Gebrewold, S.; Marazzi, L.; Parolari, P.; Brenot, R.; Duíll, S.; Bonjour, R.; Hillerkuss, D.; Hafner, C.; and Leuthold, J.\n\n\n \n\n\n\n IEEE Journal on Selected Topics in Quantum Electronics, 20(5). 2014.\n \n\n\n\n
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\n\n\n@article{\n title = {Reflective-SOA fiber cavity laser as directly modulated WDM-PON colorless transmitter},\n type = {article},\n year = {2014},\n keywords = {Colorless transmitter,Reflective semiconductor optical amplifier (RSOA),Self-seeding,Semiconductor optical amplifier,Wavelength division multiplexing-passive optical n},\n volume = {20},\n id = {ae7b976e-c307-34f7-9013-6958e97d500f},\n created = {2017-10-13T10:09:21.515Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.515Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2014 IEEE. Reflective semiconductor optical amplifier (RSOA) fiber cavity lasers are attractive colorless, self-seeded, self-tuning, and directly modulatable sources for passive optical networks (PONs). They comprise of an RSOA in the optical network unit as the active element, a distribution fiber as the laser cavity, a waveguide grating router, and a common reflective mirror with the latter two positioned at the remote node. In this paper, we introduce a model and perform simulations to elucidate the recently discovered successful operationofthis new PON source. The results are inagreement with experiments; the formation ofanarrow laser spectrum with a relatively constant output power is seen despite a relatively broad passband window of the waveguide grating router. We further study mode competition and mode partition noise. It is shown that proper chromatic dispersion management can overcome mode partition noise limitations. The quality of the RSOA fiber cavity laser does not degrade when being directly modulated and as a result these highly multimode lasers offer an economic way to transport Gbit/s upstream data over kilometers of fiber in a wavelength division multiplexing-PON.},\n bibtype = {article},\n author = {Gebrewold, S.A. and Marazzi, L. and Parolari, P. and Brenot, R. and Duíll, S.P.O. and Bonjour, R. and Hillerkuss, D. and Hafner, C. and Leuthold, J.},\n doi = {10.1109/JSTQE.2014.2307314},\n journal = {IEEE Journal on Selected Topics in Quantum Electronics},\n number = {5}\n}\n\n © 2014 IEEE. Reflective semiconductor optical amplifier (RSOA) fiber cavity lasers are attractive colorless, self-seeded, self-tuning, and directly modulatable sources for passive optical networks (PONs). They comprise of an RSOA in the optical network unit as the active element, a distribution fiber as the laser cavity, a waveguide grating router, and a common reflective mirror with the latter two positioned at the remote node. In this paper, we introduce a model and perform simulations to elucidate the recently discovered successful operationofthis new PON source. The results are inagreement with experiments; the formation ofanarrow laser spectrum with a relatively constant output power is seen despite a relatively broad passband window of the waveguide grating router. We further study mode competition and mode partition noise. It is shown that proper chromatic dispersion management can overcome mode partition noise limitations. The quality of the RSOA fiber cavity laser does not degrade when being directly modulated and as a result these highly multimode lasers offer an economic way to transport Gbit/s upstream data over kilometers of fiber in a wavelength division multiplexing-PON.\n
\n\n\n\n \n\n \n \n \n \n \n Colorless self-seeded fiber cavity laser transmitter for WDM-PON.\n \n \n \n\n\n \n Gebrewold, S.; Marazzi, L.; Parolari, P.; Brunero, M.; Brenot, R.; Hillerkuss, D.; Hafner, C.; and Leuthold, J.\n\n\n \n\n\n\n In Conference on Lasers and Electro-Optics Europe - Technical Digest, volume 2014-Janua, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Colorless self-seeded fiber cavity laser transmitter for WDM-PON},\n type = {inproceedings},\n year = {2014},\n volume = {2014-Janua},\n id = {6ebfe990-3528-3e5a-8fe6-792c1fb33ae4},\n created = {2017-10-13T10:09:21.641Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.641Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Colorless, self-seeded km-long fiber cavity RSOA lasers embedded in an access network are investigated for the optimum operation conditions. Theoretical predictions on the proper configuration and the impact of dispersion are supported by experiments.},\n bibtype = {inproceedings},\n author = {Gebrewold, S.A. and Marazzi, L. and Parolari, P. and Brunero, M. and Brenot, R. and Hillerkuss, D. and Hafner, C. and Leuthold, J.},\n booktitle = {Conference on Lasers and Electro-Optics Europe - Technical Digest}\n}\n\n Colorless, self-seeded km-long fiber cavity RSOA lasers embedded in an access network are investigated for the optimum operation conditions. Theoretical predictions on the proper configuration and the impact of dispersion are supported by experiments.\n
\n\n\n\n \n\n \n \n \n \n \n O-band 10-Gb/s operation of a reflective semiconductor optical amplifier based self-seeded transmitter for optical access applications.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Martinelli, M.; Chanclou, P.; Deniel, Q.; Saliou, F.; Le, S.; Gavioli, G.; Brenot, R.; Barbet, S.; Maho, A.; Gebrewold, S.; Hillerkuss, D.; and Leuthold, J.\n\n\n \n\n\n\n Fiber and Integrated Optics, 33(3). 2014.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@article{\n title = {O-band 10-Gb/s operation of a reflective semiconductor optical amplifier based self-seeded transmitter for optical access applications},\n type = {article},\n year = {2014},\n keywords = {mobile fronthaul,optical access,reflective semiconductor optical amplifier,self-seeding},\n volume = {33},\n id = {905749e3-6627-3469-b9da-e7f940f373c0},\n created = {2017-10-13T10:09:22.947Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.947Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {New applications are emerging in the optical access for wavelength-division multiplexed passive optical network colorless transmitters based on a reflective semiconductor optical amplifier. Previous works have shown that 10-Gb/s operation can be reached in the C-band with such transmitters, yet trade-offs are necessary for chromatic dispersion and, consequently, link length enters the equation. Such impairments are discussed using both experimen tal data and simulation results. New experimental data with interesting performance in the O-band are also presented. © 2014 Taylor and Francis Group, LLC.},\n bibtype = {article},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Martinelli, M. and Chanclou, P. and Deniel, Q. and Saliou, F. and Le, S.D. and Gavioli, G. and Brenot, R. and Barbet, S. and Maho, A. and Gebrewold, S.A. and Hillerkuss, D. and Leuthold, J.},\n doi = {10.1080/01468030.2014.886752},\n journal = {Fiber and Integrated Optics},\n number = {3}\n}\n\n New applications are emerging in the optical access for wavelength-division multiplexed passive optical network colorless transmitters based on a reflective semiconductor optical amplifier. Previous works have shown that 10-Gb/s operation can be reached in the C-band with such transmitters, yet trade-offs are necessary for chromatic dispersion and, consequently, link length enters the equation. Such impairments are discussed using both experimen tal data and simulation results. New experimental data with interesting performance in the O-band are also presented. © 2014 Taylor and Francis Group, LLC.\n
\n\n\n\n \n\n \n \n \n \n \n Operation of a RSOA WDM PON Self-seeded transmitter over more than 50 km of SSMF up to 10 Gb/s.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Martinelli, M.; Maho, A.; Barbet, S.; Lelarge, F.; Brenot, R.; Gavioli, G.; Simon, G.; Saliou, F.; Deniel, Q.; and Chanclou, P.\n\n\n \n\n\n\n In Optical Fiber Communication Conference, OFC 2014, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Operation of a RSOA WDM PON Self-seeded transmitter over more than 50 km of SSMF up to 10 Gb/s},\n type = {inproceedings},\n year = {2014},\n id = {89c2519a-7af7-3df3-b584-983fd804f214},\n created = {2017-10-13T10:09:23.007Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.007Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {For the first time we present operation of a WDM PON self-seeded transmitter in the O-band achieving more than 50-km SSMF transmission up to 10 Gb/s over 8 channels. © OSA 2014.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Martinelli, M. and Maho, A. and Barbet, S. and Lelarge, F. and Brenot, R. and Gavioli, G. and Simon, G. and Saliou, F. and Deniel, Q. and Chanclou, P.},\n booktitle = {Optical Fiber Communication Conference, OFC 2014}\n}\n\n For the first time we present operation of a WDM PON self-seeded transmitter in the O-band achieving more than 50-km SSMF transmission up to 10 Gb/s over 8 channels. © OSA 2014.\n
\n\n\n\n \n\n \n \n \n \n \n Operation of a RSOA WDM PON self-seeded transmitter over More than 50 km of SSMF up to 10 Gb/s.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Martinelli, M.; Maho, A.; Barbet, S.; Lelarge, F.; Brenot, R.; Gavioli, G.; Simon, G.; Saliou, F.; Deniel, Q.; and Chanclou, P.\n\n\n \n\n\n\n In Conference on Optical Fiber Communication, Technical Digest Series, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Operation of a RSOA WDM PON self-seeded transmitter over More than 50 km of SSMF up to 10 Gb/s},\n type = {inproceedings},\n year = {2014},\n id = {a7a4edca-1fd8-3cd6-9af9-b8fbbfc6aa30},\n created = {2017-10-13T10:09:23.062Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.062Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {For the first time we present operation of a WDM PON self-seeded transmitter in the O-band achieving more than 50-km SSMF transmission up to 10 Gb/s over 8 channels. © 2014 OSA.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Martinelli, M. and Maho, A. and Barbet, S. and Lelarge, F. and Brenot, R. and Gavioli, G. and Simon, G. and Saliou, F. and Deniel, Q. and Chanclou, P.},\n doi = {10.1109/OFC.2014.6887140},\n booktitle = {Conference on Optical Fiber Communication, Technical Digest Series}\n}\n\n For the first time we present operation of a WDM PON self-seeded transmitter in the O-band achieving more than 50-km SSMF transmission up to 10 Gb/s over 8 channels. © 2014 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Operation of a RSOA WDM PON self-seeded transmitter over more than 50 km of SSMF up to 10 Gb/s.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Martinelli, M.; Maho, A.; Barbet, S.; Lelarge, F.; Brenot, R.; Gavioli, G.; Simon, G.; Saliou, F.; Deniel, Q.; and Chanclou, P.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2014. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Operation of a RSOA WDM PON self-seeded transmitter over more than 50 km of SSMF up to 10 Gb/s},\n type = {inproceedings},\n year = {2014},\n id = {534a7256-de74-3e92-9f1d-0f1336fd4d16},\n created = {2017-10-13T10:09:23.391Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.391Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {For the first time we present operation of a WDM PON self-seeded transmitter in the O-band achieving more than 50-km SSMF transmission up to 10 Gb/s over 8 channels. © OSA 2014.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Martinelli, M. and Maho, A. and Barbet, S. and Lelarge, F. and Brenot, R. and Gavioli, G. and Simon, G. and Saliou, F. and Deniel, Q. and Chanclou, P.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n For the first time we present operation of a WDM PON self-seeded transmitter in the O-band achieving more than 50-km SSMF transmission up to 10 Gb/s over 8 channels. © OSA 2014.\n
\n\n\n\n \n\n \n \n \n \n \n 10-Gb/s operation of a colorless self-seeded transmitter over more than 70 km of SSMF.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Martinelli, M.; Brenot, R.; Maho, A.; Barbet, S.; Gavioli, G.; Simon, G.; Saliou, F.; and Chanclou, P.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 26(6). 2014.\n \n\n\n\n
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\n\n\n@article{\n title = {10-Gb/s operation of a colorless self-seeded transmitter over more than 70 km of SSMF},\n type = {article},\n year = {2014},\n keywords = {Passive optical network (PON),colorless transmitter,fronthaul,reflective semiconductor optical amplifier (RSOA)},\n volume = {26},\n id = {500e8362-22c9-3d10-8791-de98cbb36dd5},\n created = {2017-10-13T10:09:24.072Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:24.072Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Operation of a network-embedded colorless self-tuning transmitter for wavelength division multiplexing (WDM) networks is experimentally demonstrated at 10-Gb/s data rate. Colorless operation is achieved by self-seeding an O-band reflective semiconductor optical amplifier (RSOA) with the feedback signal reflected at the remote node WDM multiplexer filter. In particular, the transmitter exploits a 2-Faraday rotators configuration to ensure polarization insensitive operation and allowing for the exploitation of high gain O-band RSOAs, which present a very high polarization dependent gain. Two different multiplexers and various lengths of drop fibers constituted the network-embedded transmitters. Transmission up to 72 km of standard single mode fiber has been demonstrated at 10 Gb/s, confirming the absence of chromatic dispersion penalties as expected from the choice of the O-band operation. © 1989-2012 IEEE.},\n bibtype = {article},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Martinelli, M. and Brenot, R. and Maho, A. and Barbet, S. and Gavioli, G. and Simon, G. and Saliou, F. and Chanclou, P.},\n doi = {10.1109/LPT.2014.2301192},\n journal = {IEEE Photonics Technology Letters},\n number = {6}\n}\n\n Operation of a network-embedded colorless self-tuning transmitter for wavelength division multiplexing (WDM) networks is experimentally demonstrated at 10-Gb/s data rate. Colorless operation is achieved by self-seeding an O-band reflective semiconductor optical amplifier (RSOA) with the feedback signal reflected at the remote node WDM multiplexer filter. In particular, the transmitter exploits a 2-Faraday rotators configuration to ensure polarization insensitive operation and allowing for the exploitation of high gain O-band RSOAs, which present a very high polarization dependent gain. Two different multiplexers and various lengths of drop fibers constituted the network-embedded transmitters. Transmission up to 72 km of standard single mode fiber has been demonstrated at 10 Gb/s, confirming the absence of chromatic dispersion penalties as expected from the choice of the O-band operation. © 1989-2012 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n Self-tuning transmitter for fibre-to-the-antenna PON networks.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Gatto, A.; Martinelli, M.; Chanclou, P.; Deniel, Q.; Saliou, F.; Le, S.; Brenot, R.; Barbet, S.; Lelarge, F.; Gebrewold, S.; O'Duill, S.; Hillerkuss, D.; Leuthold, J.; Gavioli, G.; and Galli, P.\n\n\n \n\n\n\n Optical Switching and Networking, 14(PART 1). 2014.\n \n\n\n\n
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\n\n\n@article{\n title = {Self-tuning transmitter for fibre-to-the-antenna PON networks},\n type = {article},\n year = {2014},\n keywords = {Colourless,FTTA,Fronthaul,RSOA,Self-seeding,WDM PON},\n volume = {14},\n id = {ac044741-6bce-330c-8d07-c96a960b711a},\n created = {2017-10-13T10:09:24.371Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:24.371Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {WDM PONs offering point-to-point connectivity, independence of multiple access protocol to share the medium are good candidates for supporting the new fronthaul fibre network requirements. The necessity to allow inventory and maintenance cost reduction will favour WDM PON solutions based on colourless transceivers. We present the proposal of a network embedded self-tuning colourless transmitter, based on reflective semiconductor optical amplifier (RSOA) self-seeding architectures. We analyse the fibre-to-the-antenna network requirements and evidence the capabilities of the network embedded self-tuning colourless transmitter, showing its principle of operation, the development and the modelling of the active elements. We present and discuss recent experimental results up to 10 Gbit/s, which are encouraging for the transmitter exploitation in fronthaul WDM multiplexing technology. © 2014 Elsevier B.V.},\n bibtype = {article},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Gatto, A. and Martinelli, M. and Chanclou, P. and Deniel, Q. and Saliou, F. and Le, S.D. and Brenot, R. and Barbet, S. and Lelarge, F. and Gebrewold, S. and O'Duill, S. and Hillerkuss, D. and Leuthold, J. and Gavioli, G. and Galli, P.},\n doi = {10.1016/j.osn.2014.01.008},\n journal = {Optical Switching and Networking},\n number = {PART 1}\n}\n\n WDM PONs offering point-to-point connectivity, independence of multiple access protocol to share the medium are good candidates for supporting the new fronthaul fibre network requirements. The necessity to allow inventory and maintenance cost reduction will favour WDM PON solutions based on colourless transceivers. We present the proposal of a network embedded self-tuning colourless transmitter, based on reflective semiconductor optical amplifier (RSOA) self-seeding architectures. We analyse the fibre-to-the-antenna network requirements and evidence the capabilities of the network embedded self-tuning colourless transmitter, showing its principle of operation, the development and the modelling of the active elements. We present and discuss recent experimental results up to 10 Gbit/s, which are encouraging for the transmitter exploitation in fronthaul WDM multiplexing technology. © 2014 Elsevier B.V.\n
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\n \n \n\n \n \n \n \n \n Remotely-pumped network-embedded self-tuning transmitter for 80-Gb/s conventional hybrid TDM/WDM PON with 256-split.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Brenot, R.; Barbet, S.; and Martinelli, M.\n\n\n \n\n\n\n Optics Express, 21(4). 2013.\n \n\n\n\n
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\n\n\n@article{\n title = {Remotely-pumped network-embedded self-tuning transmitter for 80-Gb/s conventional hybrid TDM/WDM PON with 256-split},\n type = {article},\n year = {2013},\n volume = {21},\n id = {4345fa09-d794-35d9-9a71-4c87274087ef},\n created = {2017-10-13T10:09:19.231Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.231Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present a colorless network-embedded self-tuning transmitter assisted by a remotely pumped erbium-doped double-pass amplifier located at the remote node for a conventional hybrid stacked-WDM/TDM-PON. The scheme provides up to 256-split PON with 80-Gb/s aggregate upstream capacity obtained with RSOA direct modulation at 2.5 Gb/s. © 2013 Optical Society of America.},\n bibtype = {article},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Brenot, R. and Barbet, S. and Martinelli, M.},\n doi = {10.1364/OE.21.004376},\n journal = {Optics Express},\n number = {4}\n}\n\n We present a colorless network-embedded self-tuning transmitter assisted by a remotely pumped erbium-doped double-pass amplifier located at the remote node for a conventional hybrid stacked-WDM/TDM-PON. The scheme provides up to 256-split PON with 80-Gb/s aggregate upstream capacity obtained with RSOA direct modulation at 2.5 Gb/s. © 2013 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n 10-Gb/s Polarization-Insensitive RSOA-based Self-Tuning transmitter for WDM-PON bridging up to 52 km.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Gatto, A.; Martinelli, M.; Brenot, R.; Barbet, S.; Galli, P.; and Gavioli, G.\n\n\n \n\n\n\n In 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2013, 2013. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {10-Gb/s Polarization-Insensitive RSOA-based Self-Tuning transmitter for WDM-PON bridging up to 52 km},\n type = {inproceedings},\n year = {2013},\n id = {b35aa6d5-aa8b-333c-bf89-2822522f60eb},\n created = {2017-10-13T10:09:21.000Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.000Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {10-Gb/s operation of a network-embedded self-tuning transmitter exploiting a high-PDG RSOA in a polarization preserving configuration based on two-Faraday rotators, is demonstrated bridging up to 52 km of NZD- fibre. The dispersive load tolerance is finally analysed. © 2013 OSA.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Gatto, A. and Martinelli, M. and Brenot, R. and Barbet, S. and Galli, P. and Gavioli, G.},\n booktitle = {2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference, OFC/NFOEC 2013}\n}\n\n 10-Gb/s operation of a network-embedded self-tuning transmitter exploiting a high-PDG RSOA in a polarization preserving configuration based on two-Faraday rotators, is demonstrated bridging up to 52 km of NZD- fibre. The dispersive load tolerance is finally analysed. © 2013 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Off-set filtering for enhanced transmission in RSOA based WDM-PON.\n \n \n \n\n\n \n Gatto, A.; Parolari, P.; Marazzi, L.; Brunero, M.; Barbet, S.; Maho, A.; Brenot, R.; Gavioli, G.; Galli, P.; and Martinelli, M.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, 2013. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Off-set filtering for enhanced transmission in RSOA based WDM-PON},\n type = {inproceedings},\n year = {2013},\n keywords = {WDM PON,chirp,colourless transmitter,filter detuning,performance analysis,seeded RSOAs},\n id = {eb80a8c0-ad13-3c31-9539-dde62beca1b0},\n created = {2017-10-13T10:09:21.831Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.831Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present an experimental analysis on externally seeded colourless transmitters for WDM PON. We take advantage of direct modulation of a high performance MQW RSOA. Chirp is analysed as main limiting factor to SSMF propagation at 10 Gb/s. We demonstrate that off-set filtering performed by the OLT demultiplexer allows to cope with chromatic dispersion impairments and to bridge 24-km SSMF at 10 Gb/s with modest penalties with respect to back to back. © 2013 IEEE.},\n bibtype = {inproceedings},\n author = {Gatto, A. and Parolari, P. and Marazzi, L. and Brunero, M. and Barbet, S. and Maho, A. and Brenot, R. and Gavioli, G. and Galli, P. and Martinelli, M.},\n doi = {10.1109/ICTON.2013.6602924},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n We present an experimental analysis on externally seeded colourless transmitters for WDM PON. We take advantage of direct modulation of a high performance MQW RSOA. Chirp is analysed as main limiting factor to SSMF propagation at 10 Gb/s. We demonstrate that off-set filtering performed by the OLT demultiplexer allows to cope with chromatic dispersion impairments and to bridge 24-km SSMF at 10 Gb/s with modest penalties with respect to back to back. © 2013 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n 10-Gb/s polarization-insensitive RSOA-based self-tuning transmitter for WDM-PON bridging up to 52 km.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Gatto, A.; Martinelli, M.; Brenot, R.; Barbet, S.; Galli, P.; and Gavioli, G.\n\n\n \n\n\n\n In Optical Fiber Communication Conference, OFC 2013, 2013. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {10-Gb/s polarization-insensitive RSOA-based self-tuning transmitter for WDM-PON bridging up to 52 km},\n type = {inproceedings},\n year = {2013},\n id = {c8c44d9e-e7ac-3b36-a144-10a7accf390a},\n created = {2017-10-13T10:09:22.517Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.517Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {10-Gb/s operation of a network-embedded self-tuning transmitter exploiting a high-PDG RSOA in a polarization preserving configuration based on two-Faraday rotators, is demonstrated bridging up to 52 km of NZD-fibre. The dispersive load tolerance is finally analysed. © 2013 OSA.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Gatto, A. and Martinelli, M. and Brenot, R. and Barbet, S. and Galli, P. and Gavioli, G.},\n booktitle = {Optical Fiber Communication Conference, OFC 2013}\n}\n\n 10-Gb/s operation of a network-embedded self-tuning transmitter exploiting a high-PDG RSOA in a polarization preserving configuration based on two-Faraday rotators, is demonstrated bridging up to 52 km of NZD-fibre. The dispersive load tolerance is finally analysed. © 2013 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Up to 10.7-Gb/s high-PDG RSOA-based colorless transmitter for WDM networks.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Gatto, A.; Martinelli, M.; Brenot, R.; Barbet, S.; Galli, P.; and Gavioli, G.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 25(7). 2013.\n \n\n\n\n
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\n\n\n@article{\n title = {Up to 10.7-Gb/s high-PDG RSOA-based colorless transmitter for WDM networks},\n type = {article},\n year = {2013},\n keywords = {Passive optical network (PON),Polarization,Reflective semiconductor optical amplifier (RSOA),Retracing optical circuit},\n volume = {25},\n id = {4228f9a2-818f-3686-9f78-d43b22e6fbbc},\n created = {2017-10-13T10:09:22.645Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.645Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The operation of a network-embedded colorless self-tuning transmitter for WDM networks is experimentally demonstrated from 2.5- up to 10.7-Gb/s data rates. Colorless operation is achieved by self-seeding an ultra-fast reflective semiconductor optical amplifier (RSOA) with the feedback signal reflected at the WDM multiplexer filter. In particular, the transmitter exploits a 2-Faraday rotators configuration to ensure polarization insensitive operation and allowing for the exploitation of high gain RSOAs, which can be designed to operate on a single polarization. The impact on the transmission of the fiber chromatic dispersion at different bit-rates and with different channel bandwidths of the WDM multiplexer filter is experimentally investigated up to 10.7 Gb/s. The tolerance to positive and negative dispersive loads is also assessed. © 2013 IEEE.},\n bibtype = {article},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Gatto, A. and Martinelli, M. and Brenot, R. and Barbet, S. and Galli, P. and Gavioli, G.},\n doi = {10.1109/LPT.2013.2243138},\n journal = {IEEE Photonics Technology Letters},\n number = {7}\n}\n\n The operation of a network-embedded colorless self-tuning transmitter for WDM networks is experimentally demonstrated from 2.5- up to 10.7-Gb/s data rates. Colorless operation is achieved by self-seeding an ultra-fast reflective semiconductor optical amplifier (RSOA) with the feedback signal reflected at the WDM multiplexer filter. In particular, the transmitter exploits a 2-Faraday rotators configuration to ensure polarization insensitive operation and allowing for the exploitation of high gain RSOAs, which can be designed to operate on a single polarization. The impact on the transmission of the fiber chromatic dispersion at different bit-rates and with different channel bandwidths of the WDM multiplexer filter is experimentally investigated up to 10.7 Gb/s. The tolerance to positive and negative dispersive loads is also assessed. © 2013 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n Last-mile technologies: New WDM access proposals, devices and experiments.\n \n \n \n\n\n \n Deniel, Q.; Saliou, F.; Chanclou, P.; Marazzi, L.; Parolari, P.; Brunero, M.; Gatto, A.; Martinelli, M.; Gavioli, G.; Iachelini, A.; Cimmino, A.; Brenot, R.; Barbet, S.; Lelarge, F.; O’Duill, S.; Gebrewald, S.; Koos, C.; Freude, W.; and Leuthold, J.\n\n\n \n\n\n\n 2013.\n \n\n\n\n
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\n\n\n@book{\n title = {Last-mile technologies: New WDM access proposals, devices and experiments},\n type = {book},\n year = {2013},\n source = {Optical Fibers: New Developments},\n keywords = {Backhauling,FTTH,Last mile technologies,NGAN,PON,Seeding,WDM},\n id = {f68c35ed-dbdf-3043-a46b-788c2b5912e6},\n created = {2017-10-13T10:09:24.283Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:24.283Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {© 2013 by Nova Science Publishers, Inc. Wavelength division multiplexed passive optical networks (WDM PON) offer a promising solution for a variety of applications in Next Generation Access Network (NGAN). Up to now WDM PON technology has been unsatisfactorily obtained by either costly tuneable transmitters or by exploiting external seeding sources. The key to enabling cost-effective WDM PON architectures is the deployment of colourless Optical Network Unit (ONU) transmitters, so that generic self-tuning transmitters can be employed with an automatic and passive selection by the optical infrastructure of the wavelength for each user. The chapter presents FP7 European project ERMES approach to the provision of colourless ONU transmitters. The breakthrough idea is to use a significant portion of the network to implement an embedded, self-tuning and modulable laser cavity. This idea is based on establishing a very long cavity laser with facility for direct modulation. The goal is achieved by using a dedicated device whose constituents are: the gain chip at the ONU side to create the circulating laser field and to provide modulation functionality; at the remote node only a wavelength multiplexer/demultiplexer and a reflector is required; the distribution fibre connects the ONU to the RN. Once a steady-state circulating laser field is established, the active chip can be directly modulated enabling up-stream up to 10 Gb/s data-rate per user. The development of a device suitable for this application is the central goal of the ERMES project. The ERMES consortium comprises of leading industrial and academic partners with strong expertize in optical network construction, device fabrication, laboratory experimental trials and theoretical investigations. The intra-consortium collaboration allows for the swift development of such a transmitter. This solution is potentially a highly effective alternative to the existing approaches in terms of cost reduction as it is colourless and obviates the need for wavelength-specific external seeding sources. It is also appealing in terms of achievable performance, with operation to 10 Gb/s transmission and as there are no impairments from Rayleigh back-scattering, longer bridged distances are expected. In the proposed contribution the main applications of the ERMES project approach are initially reviewed together with the requested specifications from component vendors and network operators point of view. The principle of operation is explained and discussed in details with specific attention to issues arisen during the first year project. Experimental results are presented and commented with the help of the first modelling result. Finally the project future goals are illustrated.},\n bibtype = {book},\n author = {Deniel, Q. and Saliou, F. and Chanclou, P. and Marazzi, L. and Parolari, P. and Brunero, M. and Gatto, A. and Martinelli, M. and Gavioli, G. and Iachelini, A. and Cimmino, A. and Brenot, R. and Barbet, S. and Lelarge, F. and O’Duill, S. and Gebrewald, S. and Koos, C. and Freude, W. and Leuthold, J.}\n}\n\n © 2013 by Nova Science Publishers, Inc. Wavelength division multiplexed passive optical networks (WDM PON) offer a promising solution for a variety of applications in Next Generation Access Network (NGAN). Up to now WDM PON technology has been unsatisfactorily obtained by either costly tuneable transmitters or by exploiting external seeding sources. The key to enabling cost-effective WDM PON architectures is the deployment of colourless Optical Network Unit (ONU) transmitters, so that generic self-tuning transmitters can be employed with an automatic and passive selection by the optical infrastructure of the wavelength for each user. The chapter presents FP7 European project ERMES approach to the provision of colourless ONU transmitters. The breakthrough idea is to use a significant portion of the network to implement an embedded, self-tuning and modulable laser cavity. This idea is based on establishing a very long cavity laser with facility for direct modulation. The goal is achieved by using a dedicated device whose constituents are: the gain chip at the ONU side to create the circulating laser field and to provide modulation functionality; at the remote node only a wavelength multiplexer/demultiplexer and a reflector is required; the distribution fibre connects the ONU to the RN. Once a steady-state circulating laser field is established, the active chip can be directly modulated enabling up-stream up to 10 Gb/s data-rate per user. The development of a device suitable for this application is the central goal of the ERMES project. The ERMES consortium comprises of leading industrial and academic partners with strong expertize in optical network construction, device fabrication, laboratory experimental trials and theoretical investigations. The intra-consortium collaboration allows for the swift development of such a transmitter. This solution is potentially a highly effective alternative to the existing approaches in terms of cost reduction as it is colourless and obviates the need for wavelength-specific external seeding sources. It is also appealing in terms of achievable performance, with operation to 10 Gb/s transmission and as there are no impairments from Rayleigh back-scattering, longer bridged distances are expected. In the proposed contribution the main applications of the ERMES project approach are initially reviewed together with the requested specifications from component vendors and network operators point of view. The principle of operation is explained and discussed in details with specific attention to issues arisen during the first year project. Experimental results are presented and commented with the help of the first modelling result. Finally the project future goals are illustrated.\n
\n\n\n\n \n\n \n \n \n \n \n Optical fiber solution for mobile fronthaul to achieve cloud radio access network.\n \n \n \n\n\n \n Chanclou, P.; Pizzinat, A.; Le Clech, F.; Reedeker, T.; Lagadec, Y.; Saliou, F.; Le Guyader, B.; Guillo, L.; Deniel, Q.; Gosselin, S.; Le, S.; Diallo, T.; Brenot, R.; Lelarge, F.; Marazzi, L.; Parolari, P.; Martinelli, M.; O'Dull, S.; Gebrewold, S.; Hillerkuss, D.; Leuthold, J.; Gavioli, G.; and Galli, P.\n\n\n \n\n\n\n In 2013 Future Network and Mobile Summit, FutureNetworkSummit 2013, 2013. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Optical fiber solution for mobile fronthaul to achieve cloud radio access network},\n type = {inproceedings},\n year = {2013},\n keywords = {Digital Radio over Fiber,Mobile Network,Optical Fiber Network,Wavelength-Division Multiplexing (WDM) Network},\n id = {7aa16f0c-993a-3a88-adcc-5009265c4259},\n created = {2017-10-13T10:09:24.462Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:24.462Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {This paper describes the technical aspects of optical access solutions for mobile fronthaul application. The mobile context and main constraints of fronthaul signals are presented. The need for a demarcation point between the Mobile operator and the Fiber provider is introduced. The optical solution to achieve such a network is discussed. A WDM network with passive monitoring at the antenna site and automatic wavelength assignment is proposed based on self-seeded solution. © 2013 Authors.},\n bibtype = {inproceedings},\n author = {Chanclou, P. and Pizzinat, A. and Le Clech, F. and Reedeker, T.-L. and Lagadec, Y. and Saliou, F. and Le Guyader, B. and Guillo, L. and Deniel, Q. and Gosselin, S. and Le, S.D. and Diallo, T. and Brenot, R. and Lelarge, F. and Marazzi, L. and Parolari, P. and Martinelli, M. and O'Dull, S. and Gebrewold, S.A. and Hillerkuss, D. and Leuthold, J. and Gavioli, G. and Galli, P.},\n booktitle = {2013 Future Network and Mobile Summit, FutureNetworkSummit 2013}\n}\n\n This paper describes the technical aspects of optical access solutions for mobile fronthaul application. The mobile context and main constraints of fronthaul signals are presented. The need for a demarcation point between the Mobile operator and the Fiber provider is introduced. The optical solution to achieve such a network is discussed. A WDM network with passive monitoring at the antenna site and automatic wavelength assignment is proposed based on self-seeded solution. © 2013 Authors.\n
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\n \n \n\n \n \n \n \n \n Polarization in retracing circuits for WDM-PON.\n \n \n \n\n\n \n Martinelli, M.; Marazzi, L.; Parolari, P.; Brunero, M.; and Gavioli, G.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 24(14). 2012.\n \n\n\n\n
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\n\n\n@article{\n title = {Polarization in retracing circuits for WDM-PON},\n type = {article},\n year = {2012},\n keywords = {Passive optical network (PON),polarization,reflective semiconductor optical amplifier (RSOA),retracing optical circuit},\n volume = {24},\n id = {56c18368-515f-37aa-b559-1d70b16377e2},\n created = {2017-10-13T10:09:17.305Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.305Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Reflective semiconductor optical amplifier (RSOA)-based network-embedded self-tuning solutions for colorless optical network unit in wavelength-division- multiplexed passive optical network architecture suffer the device polarization-dependent gain (PDG). The Faraday-mirror-based topology proposed in the literature for low PDG RSOA is not suitable for high PDG RSOA. A polarization retracing circuit is proposed and discussed to comply with the high PDG RSOA. The polarization evolution is theoretically and experimentally analyzed in the presence of a high PDG RSOA comparing three cases: standard topology with standard mirror, the retracing circuit proposed in the literature with a Faraday rotator mirror (FRM), and the proposed retracing circuit, which includes both an FRM and a Faraday rotator © 2012 IEEE.},\n bibtype = {article},\n author = {Martinelli, M. and Marazzi, L. and Parolari, P. and Brunero, M. and Gavioli, G.},\n doi = {10.1109/LPT.2012.2199296},\n journal = {IEEE Photonics Technology Letters},\n number = {14}\n}\n\n Reflective semiconductor optical amplifier (RSOA)-based network-embedded self-tuning solutions for colorless optical network unit in wavelength-division- multiplexed passive optical network architecture suffer the device polarization-dependent gain (PDG). The Faraday-mirror-based topology proposed in the literature for low PDG RSOA is not suitable for high PDG RSOA. A polarization retracing circuit is proposed and discussed to comply with the high PDG RSOA. The polarization evolution is theoretically and experimentally analyzed in the presence of a high PDG RSOA comparing three cases: standard topology with standard mirror, the retracing circuit proposed in the literature with a Faraday rotator mirror (FRM), and the proposed retracing circuit, which includes both an FRM and a Faraday rotator © 2012 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n Network-embedded self-tuning cavity for WDM-PON transmitter.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brenot, R.; De Valicourt, G.; and Martinelli, M.\n\n\n \n\n\n\n Optics Express, 20(4). 2012.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Network-embedded self-tuning cavity for WDM-PON transmitter},\n type = {article},\n year = {2012},\n volume = {20},\n id = {2b74058e-97e3-38d7-9525-a63a9cf9f856},\n created = {2017-10-13T10:09:17.438Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.438Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A network-embedded self-tuning cavity is proved in wavelength division multiplexed passive optical network transmission over 32 channels. The external source-less topology takes advantage of a reflective element at the remote node and a reflective semiconductor optical amplifier at the optical network unit to establish a distribution-fiber based cavity. The bit error rate performance of up to 5-km cavities is presented with two optical network units simultaneously operating and with downstream signal co presence. The experimental analysis at 1.25 Gb/s provides an evaluation of polarization dependences when exploiting low polarization dependent gain reflective semiconductor optical amplifiers with 25-km and 50-km standard single mode fiber transmission. © 2012 Optical Society of America.},\n bibtype = {article},\n author = {Marazzi, L. and Parolari, P. and Brenot, R. and De Valicourt, G. and Martinelli, M.},\n doi = {10.1364/OE.20.003781},\n journal = {Optics Express},\n number = {4}\n}\n\n A network-embedded self-tuning cavity is proved in wavelength division multiplexed passive optical network transmission over 32 channels. The external source-less topology takes advantage of a reflective element at the remote node and a reflective semiconductor optical amplifier at the optical network unit to establish a distribution-fiber based cavity. The bit error rate performance of up to 5-km cavities is presented with two optical network units simultaneously operating and with downstream signal co presence. The experimental analysis at 1.25 Gb/s provides an evaluation of polarization dependences when exploiting low polarization dependent gain reflective semiconductor optical amplifiers with 25-km and 50-km standard single mode fiber transmission. © 2012 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n 80-Gb/s conventional hybrid TDM/WDM PON with 256-split based on remotely-pumped network-embedded self-tuning transmitter.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Giussani, A.; Brenot, R.; Barbet, S.; and Martinelli, M.\n\n\n \n\n\n\n In European Conference and Exhibition on Optical Communication, ECEOC 2012, 2012. \n \n\n\n\n
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\n\n\n \n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {80-Gb/s conventional hybrid TDM/WDM PON with 256-split based on remotely-pumped network-embedded self-tuning transmitter},\n type = {inproceedings},\n year = {2012},\n id = {89a954df-9f99-3879-a377-7a5ab3778722},\n created = {2017-10-13T10:09:18.077Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.077Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present a conventional hybrid stacked-WDM/TDM-PON system based on a colorless network-embedded self-tuning transmitter assisted by a remotely pumped erbium-doped double-pass amplifier located at the remote node. The scheme provides up to 256-split PON with 80-Gb/s aggregate upstream capacity obtained with RSOA direct modulation at 2.5Gb/s. © 2012 OSA.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Giussani, A. and Brenot, R. and Barbet, S. and Martinelli, M.},\n doi = {10.1364/ECEOC.2012.Tu.4.B.4},\n booktitle = {European Conference and Exhibition on Optical Communication, ECEOC 2012}\n}\n\n We present a conventional hybrid stacked-WDM/TDM-PON system based on a colorless network-embedded self-tuning transmitter assisted by a remotely pumped erbium-doped double-pass amplifier located at the remote node. The scheme provides up to 256-split PON with 80-Gb/s aggregate upstream capacity obtained with RSOA direct modulation at 2.5Gb/s. © 2012 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Embedded modulable self-tuning cavity for WDM-PON transmitter.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Brunero, M.; Galli, P.; Gavioli, G.; and Martinelli, M.\n\n\n \n\n\n\n In International Conference on Transparent Optical Networks, 2012. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Embedded modulable self-tuning cavity for WDM-PON transmitter},\n type = {inproceedings},\n year = {2012},\n keywords = {WDM PON,colourless transmitter,embedded cavity,performance analysis,self-seeded RSOAs},\n id = {dedc02a7-77c4-3ecf-b394-db37e9c54cd4},\n created = {2017-10-13T10:09:18.134Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.134Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A network-embedded self-tuning cavity based on a self-seeded RSOA is analysed with particular regards to the impact of some parameters that characterize the transmitter. The cavity is defined by the SOA reflective mirror and a Faraday rotator mirror at the remote node, which allows polarization independent operation with low PDG RSOAs. The majority of the cavity is formed by the distribution fibre, while the arrayed waveguide grating (AWG) at the RN operates as the frequency selective element. The experimental analysis is carried out by varying fundamental cavity parameters such as the distribution fibre length, the cavity losses, the bandwidth of the AWG filter and its spectral location with respect to the RSOA gain peak. Performance is experimentally evaluated at 1.25 Gb/s. Transmitter output power is determined by cavity losses independently of the AWG bandwidth. On the other hand AWG bandwidth strongly influence BER performance: for lower FWHMs error floors appear associated to intensity noise. © 2012 IEEE.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Brunero, M. and Galli, P. and Gavioli, G. and Martinelli, M.},\n doi = {10.1109/ICTON.2012.6253797},\n booktitle = {International Conference on Transparent Optical Networks}\n}\n\n A network-embedded self-tuning cavity based on a self-seeded RSOA is analysed with particular regards to the impact of some parameters that characterize the transmitter. The cavity is defined by the SOA reflective mirror and a Faraday rotator mirror at the remote node, which allows polarization independent operation with low PDG RSOAs. The majority of the cavity is formed by the distribution fibre, while the arrayed waveguide grating (AWG) at the RN operates as the frequency selective element. The experimental analysis is carried out by varying fundamental cavity parameters such as the distribution fibre length, the cavity losses, the bandwidth of the AWG filter and its spectral location with respect to the RSOA gain peak. Performance is experimentally evaluated at 1.25 Gb/s. Transmitter output power is determined by cavity losses independently of the AWG bandwidth. On the other hand AWG bandwidth strongly influence BER performance: for lower FWHMs error floors appear associated to intensity noise. © 2012 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n 80-Gb/s conventional hybrid TDM/WDM PON with 256-split based on remotely-pumped network-embedded self-tuning transmitter.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Giussani, A.; Brenot, R.; Barbet, S.; and Martinelli, M.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, 2012. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {80-Gb/s conventional hybrid TDM/WDM PON with 256-split based on remotely-pumped network-embedded self-tuning transmitter},\n type = {inproceedings},\n year = {2012},\n id = {591b6bca-a2f9-3c03-9730-77facf59f880},\n created = {2017-10-13T10:09:18.257Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.257Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present a conventional hybrid stacked-WDM/TDM-PON system based on a colorless network-embedded self-tuning transmitter assisted by a remotely pumped erbium-doped double-pass amplifier located at the remote node. The scheme provides up to 256-split PON with 80-Gb/s aggregate upstream capacity obtained with RSOA direct modulation at 2.5Gb/s. © 2012 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Giussani, A. and Brenot, R. and Barbet, S. and Martinelli, M.},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n We present a conventional hybrid stacked-WDM/TDM-PON system based on a colorless network-embedded self-tuning transmitter assisted by a remotely pumped erbium-doped double-pass amplifier located at the remote node. The scheme provides up to 256-split PON with 80-Gb/s aggregate upstream capacity obtained with RSOA direct modulation at 2.5Gb/s. © 2012 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Efficient modulation cancellation using reflective SOAs.\n \n \n \n\n\n \n Dúill, S.; Marazzi, L.; Parolari, P.; Brenot, R.; Koos, C.; Freude, W.; and Leuthold, J.\n\n\n \n\n\n\n Optics Express, 20(26). 2012.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Efficient modulation cancellation using reflective SOAs},\n type = {article},\n year = {2012},\n volume = {20},\n id = {b7cc4def-e7b7-3088-be8a-194b8d801dff},\n created = {2017-10-13T10:09:20.152Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.152Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Modulation cancellation and signal inversion are demonstrated within reflective semiconductor optical amplifiers. The effect is necessary to implement colorless optical network units for network end-users, where downstream signals need to be erased in order to reuse the carrier for upstream transmission. The results presented here indicate that reflective semiconductor optical amplifiers possess the perfect high-speed all-optical gain saturation characteristics to completely cancel the downstream modulation at microwatt optical power levels and are thus the prime candidate to be constituents of future optical network units. Theoretical considerations are supported by experiments that show the cancellation of signals with a 6 dB extinction ratio at 2.5 Gbit/s. © 2012 Optical Society of America.},\n bibtype = {article},\n author = {Dúill, S.O. and Marazzi, L. and Parolari, P. and Brenot, R. and Koos, C. and Freude, W. and Leuthold, J.},\n doi = {10.1364/OE.20.00B587},\n journal = {Optics Express},\n number = {26}\n}\n\n Modulation cancellation and signal inversion are demonstrated within reflective semiconductor optical amplifiers. The effect is necessary to implement colorless optical network units for network end-users, where downstream signals need to be erased in order to reuse the carrier for upstream transmission. The results presented here indicate that reflective semiconductor optical amplifiers possess the perfect high-speed all-optical gain saturation characteristics to completely cancel the downstream modulation at microwatt optical power levels and are thus the prime candidate to be constituents of future optical network units. Theoretical considerations are supported by experiments that show the cancellation of signals with a 6 dB extinction ratio at 2.5 Gbit/s. © 2012 Optical Society of America.\n
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\n \n \n\n \n \n \n \n \n Network-embedded self-tuning cavity for WDM-PON transmitter.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; De Valicourt, G.; and Martinelli, M.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, 2011. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Network-embedded self-tuning cavity for WDM-PON transmitter},\n type = {inproceedings},\n year = {2011},\n id = {f92542cf-7add-38f8-9c9b-e5e1c27fc065},\n created = {2017-10-13T10:09:16.427Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.427Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A network-embedded self-tuning cavity is proved in WDM-PON transmission over 32 channels, with two-ONU simultaneous operation and downstream signal. Performance at 1.25 Gb/s are experimentally analyzed after 25 km and 50 km SSMF. © 2011 OSA.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and De Valicourt, G. and Martinelli, M.},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n A network-embedded self-tuning cavity is proved in WDM-PON transmission over 32 channels, with two-ONU simultaneous operation and downstream signal. Performance at 1.25 Gb/s are experimentally analyzed after 25 km and 50 km SSMF. © 2011 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Network-embedded self-tuning cavity for WDM-PON transmitter.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; De Valicourt, G.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2011. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Network-embedded self-tuning cavity for WDM-PON transmitter},\n type = {inproceedings},\n year = {2011},\n id = {d77abb6d-eb5b-3790-8936-3ec6801938c2},\n created = {2017-10-13T10:09:17.102Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.102Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A network-embedded self-tuning cavity is proved in WDM-PON transmission over 32 channels, with two-ONU simultaneous operation and downstream signal. Performance at 1.25 Gb/s are experimentally analyzed after 25 km and 50 km SSMF. © 2011 OSA.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and De Valicourt, G. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n A network-embedded self-tuning cavity is proved in WDM-PON transmission over 32 channels, with two-ONU simultaneous operation and downstream signal. Performance at 1.25 Gb/s are experimentally analyzed after 25 km and 50 km SSMF. © 2011 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of brillouin scattering on R-SOA based WDM PON power budget.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Gatti, D.; Longhi, S.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2011. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of brillouin scattering on R-SOA based WDM PON power budget},\n type = {inproceedings},\n year = {2011},\n id = {a4db8aab-b0e9-3968-a202-a8613a25b746},\n created = {2017-10-13T10:09:17.254Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.254Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © OSA/CLEO 2011.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Gatti, D. and Longhi, S. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © OSA/CLEO 2011.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of Brillouin scattering on R-SOA based WDM PON power budget.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Gatti, D.; Longhi, S.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2011. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of Brillouin scattering on R-SOA based WDM PON power budget},\n type = {inproceedings},\n year = {2011},\n id = {e08ae967-ec30-3ce2-8445-a350911980db},\n created = {2017-10-13T10:09:17.365Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.365Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © OSA/CLEO 2011.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Gatti, D. and Longhi, S. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © OSA/CLEO 2011.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of Brillouin scattering on R-SOA based WDM PON power budget.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Gatti, D.; Longhi, S.; and Martinelli, M.\n\n\n \n\n\n\n In 2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011, 2011. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of Brillouin scattering on R-SOA based WDM PON power budget},\n type = {inproceedings},\n year = {2011},\n id = {c2e337c0-656f-31c3-b1fa-6e55dcf2b6d8},\n created = {2017-10-13T10:09:17.594Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.594Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © 2011 OSA.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Gatti, D. and Longhi, S. and Martinelli, M.},\n booktitle = {2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011}\n}\n\n Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © 2011 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of brillouin scattering on R-SOA based WDM PON power budget.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Gatti, D.; Longhi, S.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2011. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of brillouin scattering on R-SOA based WDM PON power budget},\n type = {inproceedings},\n year = {2011},\n id = {1ae905e0-1dbf-3a35-9ece-a24ff27a31e1},\n created = {2017-10-13T10:09:17.743Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.743Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © OSA/CLEO 2011.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Gatti, D. and Longhi, S. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Brillouin scattering effect in a colorless 25-km bidirectional WDM PON is experimentally evaluated. Downstream 10-Gb/s DPSK signal is directly received with a novel FBG, seeding an R-SOA at the ONU, for upstream 1.25-Gb/s OOK transmission. © OSA/CLEO 2011.\n
\n\n\n\n \n\n \n \n \n \n \n Brillouin-based DPSK demodulation.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Ferrario, M.; Gatti, D.; Longhi, S.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2011. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Brillouin-based DPSK demodulation},\n type = {inproceedings},\n year = {2011},\n id = {f001488c-c5e4-3aa2-bc8a-65dfc488b1e3},\n created = {2017-10-13T10:09:18.606Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.606Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present BER performance of all-optical 10-Gb/s DPSK demodulation obtained by an SBS active filter generated by an incoherent pump, tailored with a FBG properly designed to achieve a 6.7-GHz Gaussian spectral response. © OSA/CLEO 2011.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Ferrario, M. and Gatti, D. and Longhi, S. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We present BER performance of all-optical 10-Gb/s DPSK demodulation obtained by an SBS active filter generated by an incoherent pump, tailored with a FBG properly designed to achieve a 6.7-GHz Gaussian spectral response. © OSA/CLEO 2011.\n
\n\n\n\n \n\n \n \n \n \n \n Structured FBG filters for 10-Gb/s DPSK signal demodulation in single ended applications.\n \n \n \n\n\n \n Marazzi, L.; Boffi, P.; Parolari, P.; Martinelli, M.; Gatti, D.; Coluccelli, N.; and Longhi, S.\n\n\n \n\n\n\n Optical Fiber Technology, 17(3). 2011.\n \n\n\n\n
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\n\n\n@article{\n title = {Structured FBG filters for 10-Gb/s DPSK signal demodulation in single ended applications},\n type = {article},\n year = {2011},\n keywords = {DPSK demodulation,Fiber Bragg gratings,Fiber optics communications,WDM-PON networks},\n volume = {17},\n id = {2f229573-f3e7-3662-904a-2b44787c1144},\n created = {2017-10-13T10:09:18.791Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.791Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Differential phase-shift keying (DPSK) demodulations operated by a structured fiber Bragg grating (FBG) filter and by a Mach-Zehnder delay interferometer (MZDI) in a single-ended configuration are compared. Experimental measurements at 10 Gb/s demonstrate that a specially designed FBG outperforms an integrated-optic MZDI of ∼4 dB and ∼3.5 dB in back-to-back and after 25-km propagation, respectively. Both demodulators show low polarization sensitivity and signal frequency detuning dependence, but only MZDI operating point requires a thermal control. FBG filter proves an interesting solution for DPSK demodulation in low-cost applications and, moreover, can be designed to match colorless requirements of wave division multiplexed passive optical network (WDM-PON) applications. © 2011 Elsevier Inc. All rights reserved.},\n bibtype = {article},\n author = {Marazzi, L. and Boffi, P. and Parolari, P. and Martinelli, M. and Gatti, D. and Coluccelli, N. and Longhi, S.},\n doi = {10.1016/j.yofte.2011.01.008},\n journal = {Optical Fiber Technology},\n number = {3}\n}\n\n Differential phase-shift keying (DPSK) demodulations operated by a structured fiber Bragg grating (FBG) filter and by a Mach-Zehnder delay interferometer (MZDI) in a single-ended configuration are compared. Experimental measurements at 10 Gb/s demonstrate that a specially designed FBG outperforms an integrated-optic MZDI of ∼4 dB and ∼3.5 dB in back-to-back and after 25-km propagation, respectively. Both demodulators show low polarization sensitivity and signal frequency detuning dependence, but only MZDI operating point requires a thermal control. FBG filter proves an interesting solution for DPSK demodulation in low-cost applications and, moreover, can be designed to match colorless requirements of wave division multiplexed passive optical network (WDM-PON) applications. © 2011 Elsevier Inc. All rights reserved.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of PDL-induced crosstalk on 100-Gb/s polarization-multiplexed RZ-DQPSK in PMD-affected metro networks.\n \n \n \n\n\n \n Ferrario, M.; Boffi, P.; Marazzi, L.; Martelli, P.; Parolari, P.; and Martinelli, M.\n\n\n \n\n\n\n Optics Communications, 284(24). 2011.\n \n\n\n\n
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\n\n\n@article{\n title = {Impact of PDL-induced crosstalk on 100-Gb/s polarization-multiplexed RZ-DQPSK in PMD-affected metro networks},\n type = {article},\n year = {2011},\n keywords = {Direct detection,Optical fibre communications,Phase modulation,Polarization multiplexing,Polarization-dependent loss,Polarization-mode dispersion},\n volume = {284},\n id = {700e2146-b813-328a-b5b0-0b607cf53e3f},\n created = {2017-10-13T10:09:19.685Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.685Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The impact of PDL-induced crosstalk on 100-Gb/s polarization-multiplexed RZ-DQPSK performance in direct detection systems is experimentally assessed in presence of a moderate amount of PMD. In particular, RZ-interleaving and RZ-overlapping schemes have shown opposite behaviours towards PMD and PDL. Measurements carried out confirm the less robustness of RZ-interleaving than RZ-overlapping towards PMD, but highlight a much stronger tolerance of RZ-interleaving to PDL with respect to RZ-overlapping. When PDL combines with moderate PMD, as in metro networks, it is shown that RZ-overlapping high tolerance to PMD drastically fails, RZ-interleaving proving more efficient to deal with polarization issues in case of direct detection of polarization-multiplexed signals. © 2011 Elsevier B.V. All rights reserved. © 2011 Elsevier B.V. All rights reserved.},\n bibtype = {article},\n author = {Ferrario, M. and Boffi, P. and Marazzi, L. and Martelli, P. and Parolari, P. and Martinelli, M.},\n doi = {10.1016/j.optcom.2011.08.047},\n journal = {Optics Communications},\n number = {24}\n}\n\n The impact of PDL-induced crosstalk on 100-Gb/s polarization-multiplexed RZ-DQPSK performance in direct detection systems is experimentally assessed in presence of a moderate amount of PMD. In particular, RZ-interleaving and RZ-overlapping schemes have shown opposite behaviours towards PMD and PDL. Measurements carried out confirm the less robustness of RZ-interleaving than RZ-overlapping towards PMD, but highlight a much stronger tolerance of RZ-interleaving to PDL with respect to RZ-overlapping. When PDL combines with moderate PMD, as in metro networks, it is shown that RZ-overlapping high tolerance to PMD drastically fails, RZ-interleaving proving more efficient to deal with polarization issues in case of direct detection of polarization-multiplexed signals. © 2011 Elsevier B.V. All rights reserved. © 2011 Elsevier B.V. All rights reserved.\n
\n\n\n\n \n\n \n \n \n \n \n Brillouin-based DPSK demodulation.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Brunero, M.; Ferrario, M.; Gatti, D.; Longhi, S.; and Martinelli, M.\n\n\n \n\n\n\n In 2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011, 2011. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Brillouin-based DPSK demodulation},\n type = {inproceedings},\n year = {2011},\n id = {e2786eaf-54cf-35fb-b919-2829d632fa2e},\n created = {2017-10-13T10:09:19.961Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.961Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present BER performance of all-optical 10-Gb/s DPSK demodulation obtained by an SBS active filter generated by an incoherent pump, tailored with a FBG properly designed to achieve a 6.7-GHz Gaussian spectral response. © 2011 OSA.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Brunero, M. and Ferrario, M. and Gatti, D. and Longhi, S. and Martinelli, M.},\n booktitle = {2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011}\n}\n\n We present BER performance of all-optical 10-Gb/s DPSK demodulation obtained by an SBS active filter generated by an incoherent pump, tailored with a FBG properly designed to achieve a 6.7-GHz Gaussian spectral response. © 2011 OSA.\n
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\n \n \n\n \n \n \n \n \n RZ-interleaving in 100-Gb/s polarization multiplexed DQPSK for PMD and PDL-affected metro networks.\n \n \n \n\n\n \n Ferrario, M.; Boffi, P.; Marazzi, L.; Martelli, P.; Parolari, P.; and Martinelli, M.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, volume 1-2, 2010. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {RZ-interleaving in 100-Gb/s polarization multiplexed DQPSK for PMD and PDL-affected metro networks},\n type = {inproceedings},\n year = {2010},\n volume = {1-2},\n id = {c639ab90-ecda-3523-bafc-99eb99257fa4},\n created = {2017-10-13T10:09:18.006Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.006Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {RZ-interleaving proves an effective technique to cope with PMD and PDL issues in 100-Gb/s POLMUX RZ-DQPSK direct detection systems when PDL combines with moderate PMD, as in metroregional networks. A comparison with RZ-time overlapping is also discussed. ©2010 IEEE.},\n bibtype = {inproceedings},\n author = {Ferrario, M. and Boffi, P. and Marazzi, L. and Martelli, P. and Parolari, P. and Martinelli, M.},\n doi = {10.1109/ECOC.2010.5621444},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n RZ-interleaving proves an effective technique to cope with PMD and PDL issues in 100-Gb/s POLMUX RZ-DQPSK direct detection systems when PDL combines with moderate PMD, as in metroregional networks. A comparison with RZ-time overlapping is also discussed. ©2010 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of time-interleaving on directly-detected 100-Gb/s POLMUX RZ-DQPSK robustness to PDL-induced crosstalk.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n Optics Express, 18(7). 2010.\n \n\n\n\n
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\n\n\n@article{\n title = {Impact of time-interleaving on directly-detected 100-Gb/s POLMUX RZ-DQPSK robustness to PDL-induced crosstalk},\n type = {article},\n year = {2010},\n volume = {18},\n id = {f21c34a3-6dd1-36ac-b4d1-57261e2ab37e},\n created = {2017-10-13T10:09:20.262Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.262Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The impact of PDL-induced crosstalk on 100-Gb/s POLMUX RZ-DQPSK performance is investigated both experimentally and through numerical simulations in direct detection systems. We found that RZ timeinterleaving, contrary to what happens with PMD, features a strong robustness to PDL. The detrimental effect of optical narrow filtering on PDL-induced penalty is also analyzed; RZ time-interleaving still proves the best solution to deal with the PDL issue. ©2010 Optical Society of America.},\n bibtype = {article},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Siano, R. and Martinelli, M.},\n doi = {10.1364/OE.18.006972},\n journal = {Optics Express},\n number = {7}\n}\n\n The impact of PDL-induced crosstalk on 100-Gb/s POLMUX RZ-DQPSK performance is investigated both experimentally and through numerical simulations in direct detection systems. We found that RZ timeinterleaving, contrary to what happens with PMD, features a strong robustness to PDL. The detrimental effect of optical narrow filtering on PDL-induced penalty is also analyzed; RZ time-interleaving still proves the best solution to deal with the PDL issue. ©2010 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Controlling the delay of 100 Gb/s polarization division multiplexed signals through silicon photonics delay lines.\n \n \n \n\n\n \n Morichetti, F.; Canciamilla, A.; Ferrari, C.; Torregiani, M.; Ferrario, M.; Siano, R.; Boffi, P.; Marazzi, L.; Martelli, P.; Parolari, P.; Martinelli, M.; Samarelli, A.; Sorel, M.; De La Rue, R.; O'Faolain, L.; Beggs, D.; Krauss, T.; and Melloni, A.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, volume 1-2, 2010. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Controlling the delay of 100 Gb/s polarization division multiplexed signals through silicon photonics delay lines},\n type = {inproceedings},\n year = {2010},\n volume = {1-2},\n id = {160376be-56eb-3416-9b5c-69e69cbee60d},\n created = {2017-10-13T10:09:24.194Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:24.194Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We show a direct comparison between silicon reconfigurable delay lines based on coupled resonator optical waveguides and photonic crystal waveguides. The structures are used to selectively delay the two orthogonally polarized channels of a RZ-PolDM-DQPSK format at 100 Gbit/s. ©2010 IEEE.},\n bibtype = {inproceedings},\n author = {Morichetti, F. and Canciamilla, A. and Ferrari, C. and Torregiani, M. and Ferrario, M. and Siano, R. and Boffi, P. and Marazzi, L. and Martelli, P. and Parolari, P. and Martinelli, M. and Samarelli, A. and Sorel, M. and De La Rue, R.M. and O'Faolain, L. and Beggs, D.M. and Krauss, T.F. and Melloni, A.},\n doi = {10.1109/ECOC.2010.5621202},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n We show a direct comparison between silicon reconfigurable delay lines based on coupled resonator optical waveguides and photonic crystal waveguides. The structures are used to selectively delay the two orthogonally polarized channels of a RZ-PolDM-DQPSK format at 100 Gbit/s. ©2010 IEEE.\n
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\n \n \n\n \n \n \n \n \n Combined Amplitude-Phase Shift code tolerance to phase modulation profile.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n Optical Fiber Technology, 15(4). 2009.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 2 downloads\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Combined Amplitude-Phase Shift code tolerance to phase modulation profile},\n type = {article},\n year = {2009},\n keywords = {Optical dispersion compensation,Optical fiber communication,Phase modulation},\n volume = {15},\n id = {2aecd539-a64b-3ee4-875a-38d3f0185409},\n created = {2017-10-13T10:09:19.902Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.902Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The influence of phase modulation characteristics on Combined Amplitude-Phase Shift code performance is investigated both experimentally and by simulation. The interferometric push-pull Mach-Zehnder modulator and the linear Phase Modulator are evaluated when the optimal optical Gaussian filter is exploited. Non-optimal optical filter shape and bandwidth are considered as well. The figure of merit is the maximum distance bridged without optical dispersion compensation on a Standard Single Mode Fiber (SSMF) link. The steepness of phase transitions is critical in determining the performance of the generated CAPS. © 2009 Elsevier Inc. All rights reserved.},\n bibtype = {article},\n author = {Boffi, P. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1016/j.yofte.2009.05.003},\n journal = {Optical Fiber Technology},\n number = {4}\n}\n\n The influence of phase modulation characteristics on Combined Amplitude-Phase Shift code performance is investigated both experimentally and by simulation. The interferometric push-pull Mach-Zehnder modulator and the linear Phase Modulator are evaluated when the optimal optical Gaussian filter is exploited. Non-optimal optical filter shape and bandwidth are considered as well. The figure of merit is the maximum distance bridged without optical dispersion compensation on a Standard Single Mode Fiber (SSMF) link. The steepness of phase transitions is critical in determining the performance of the generated CAPS. © 2009 Elsevier Inc. All rights reserved.\n
\n\n\n\n \n\n \n \n \n \n \n 100-Gb/s polarization multiplexed DQPSK transmission with automatic polarization stabilization.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2009. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {100-Gb/s polarization multiplexed DQPSK transmission with automatic polarization stabilization},\n type = {inproceedings},\n year = {2009},\n id = {83a76384-edbf-3e1a-aeab-0bf3c9cc1780},\n created = {2017-10-13T10:09:20.448Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.448Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n \n\n \n \n \n \n \n 100-Gb/s polarization multiplexed DQPSK transmission with automatic polarization stabilization.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {100-Gb/s polarization multiplexed DQPSK transmission with automatic polarization stabilization},\n type = {inproceedings},\n year = {2009},\n id = {54deeeaa-b7e4-30a0-be01-b96d14af9241},\n created = {2017-10-13T10:09:21.214Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.214Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1109/CLEOE-EQEC.2009.5196261},\n booktitle = {CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference}\n}\n\n \n\n \n \n \n \n \n Stable 100-Gb/s POLMUX-DQPSK transmission with automatic polarization stabilization.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 21(11). 2009.\n \n\n\n\n
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\n\n\n@article{\n title = {Stable 100-Gb/s POLMUX-DQPSK transmission with automatic polarization stabilization},\n type = {article},\n year = {2009},\n keywords = {Differential quadrature phase-shift keying (DQPSK),Optical fiber communication,Polarization multiplexing (POLMUX),Polarization stabilizer},\n volume = {21},\n id = {05996f13-6863-326d-b296-29b103d45460},\n created = {2017-10-13T10:09:21.270Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.270Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The reliability of 100-Gb/s polarization-multiplexed return-to-zero differential quadrature phase-shift keying transmission is demonstrated exploiting direct detection and automatic polarization stabilization. We experimentally verified a 2-dB chromatic dispersion tolerance of 100 ps/nm. Long-term stability has also been assessed by sampling the bit-error rate every 3 min over a continuous period of 8 h. Measurements are performed both in back-to-back and after 8.8-km uncompensated standard single-mode fiber, in the presence of a polarization scrambler. © 2009 IEEE.},\n bibtype = {article},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1109/LPT.2009.2016758},\n journal = {IEEE Photonics Technology Letters},\n number = {11}\n}\n\n The reliability of 100-Gb/s polarization-multiplexed return-to-zero differential quadrature phase-shift keying transmission is demonstrated exploiting direct detection and automatic polarization stabilization. We experimentally verified a 2-dB chromatic dispersion tolerance of 100 ps/nm. Long-term stability has also been assessed by sampling the bit-error rate every 3 min over a continuous period of 8 h. Measurements are performed both in back-to-back and after 8.8-km uncompensated standard single-mode fiber, in the presence of a polarization scrambler. © 2009 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n All-Optical Wavelength Conversion of a 100- Gb/s Polarization-Multiplexed Signal.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrano, M.; Marazzi, L.; Parolari, P.; Siano, R.; Pusino, V.; Minzioni, P.; Cristiani, I.; Langrock, C.; Fejer, M.; Martinelli, M.; and Degiorgio, V.\n\n\n \n\n\n\n Optics Express, 17(20). 2009.\n \n\n\n\n
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\n\n\n@article{\n title = {All-Optical Wavelength Conversion of a 100- Gb/s Polarization-Multiplexed Signal},\n type = {article},\n year = {2009},\n volume = {17},\n id = {f2f2628a-4000-3049-9de6-409640a7aec7},\n created = {2017-10-13T10:09:22.703Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.703Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present the results of an in-depth experimental investigation about all-optical wavelength conversion of a 100-Gb/s polarization-multiplexed (POLMUX) signal. Each polarization channel is modulated at 25 Gbaud by differential quadrature phase-shift keying (DQPSK). The conversion is realized exploiting the high nonlinear X (2) coefficient of a periodically poled lithium niobate waveguide, in a polarization-independent configuration. We find that slight non-idealities in the polarization independent setup of the wavelength converter can significantly impair the performance of POLMUX systems. We show that high-quality wavelength conversion can be nevertheless achieved for both the polarization channels, provided that an accurate optimization of the setup is performed. This is the first demonstration, to the best of our knowledge, of the possibility to obtain penalty-free all-optical wavelength conversion in a 100-Gb/s POLMUX transmission system using direct-detection. © 2009 Optical Society of America.},\n bibtype = {article},\n author = {Martelli, P. and Boffi, P. and Ferrano, M. and Marazzi, L. and Parolari, P. and Siano, R. and Pusino, V. and Minzioni, P. and Cristiani, I. and Langrock, C. and Fejer, M.M. and Martinelli, M. and Degiorgio, V.},\n doi = {10.1364/OE.17.017758},\n journal = {Optics Express},\n number = {20}\n}\n\n We present the results of an in-depth experimental investigation about all-optical wavelength conversion of a 100-Gb/s polarization-multiplexed (POLMUX) signal. Each polarization channel is modulated at 25 Gbaud by differential quadrature phase-shift keying (DQPSK). The conversion is realized exploiting the high nonlinear X (2) coefficient of a periodically poled lithium niobate waveguide, in a polarization-independent configuration. We find that slight non-idealities in the polarization independent setup of the wavelength converter can significantly impair the performance of POLMUX systems. We show that high-quality wavelength conversion can be nevertheless achieved for both the polarization channels, provided that an accurate optimization of the setup is performed. This is the first demonstration, to the best of our knowledge, of the possibility to obtain penalty-free all-optical wavelength conversion in a 100-Gb/s POLMUX transmission system using direct-detection. © 2009 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n All-optical wavelength conversion of a polarization multiplexed signal.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Siano, R.; Pusino, V.; Minzioni, P.; Cristiani, I.; Langrock, C.; Fejer, M.; Martinelli, M.; and Degiorgio, V.\n\n\n \n\n\n\n In CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {All-optical wavelength conversion of a polarization multiplexed signal},\n type = {inproceedings},\n year = {2009},\n id = {9c5cd46a-3418-3480-b61e-a38cfd31b0db},\n created = {2017-10-13T10:09:22.818Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.818Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Siano, R. and Pusino, V. and Minzioni, P. and Cristiani, I. and Langrock, C. and Fejer, M.M. and Martinelli, M. and Degiorgio, V.},\n doi = {10.1109/CLEOE-EQEC.2009.5196236},\n booktitle = {CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference}\n}\n\n \n\n \n \n \n \n \n Wavelength conversion of real-time 100-Gb/s POLMUX RZ-DQPSK.\n \n \n \n\n\n \n Pusino, V.; Minzioni, P.; Cristiani, I.; Degiorgio, V.; Marazzi, L.; Boffi, P.; Ferrario, M.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; Martinelli, M.; Langrock, C.; and Fejer, M.\n\n\n \n\n\n\n In Conference on Optical Fiber Communication, Technical Digest Series, 2009. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Wavelength conversion of real-time 100-Gb/s POLMUX RZ-DQPSK},\n type = {inproceedings},\n year = {2009},\n keywords = {(060.5060) Phase modulation,(130.7405) Wavelength conversion devices},\n id = {b66a6181-ccf1-3b22-b1e0-0dd1a9882501},\n created = {2017-10-13T10:09:23.336Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.336Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present efficient wavelength conversion of a polarization-multiplexed RZ-DQPSK channel through cascading in a lithium niobate waveguide. BER measurements confirm that this is a promising technique for signal processing in high-bit-rate phase-modulated formats. © 2009 OSA.},\n bibtype = {inproceedings},\n author = {Pusino, V. and Minzioni, P. and Cristiani, I. and Degiorgio, V. and Marazzi, L. and Boffi, P. and Ferrario, M. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M. and Langrock, C. and Fejer, M.M.},\n booktitle = {Conference on Optical Fiber Communication, Technical Digest Series}\n}\n\n We present efficient wavelength conversion of a polarization-multiplexed RZ-DQPSK channel through cascading in a lithium niobate waveguide. BER measurements confirm that this is a promising technique for signal processing in high-bit-rate phase-modulated formats. © 2009 OSA.\n
\n\n\n\n \n\n \n \n \n \n \n All-optical wavelength conversion of a polarization multiplexed signal.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Siano, R.; Pusino, V.; Minzioni, P.; Cristiani, I.; Langrock, C.; Fejer, M.; Martinelli, M.; and Degiorgio, V.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2009. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {All-optical wavelength conversion of a polarization multiplexed signal},\n type = {inproceedings},\n year = {2009},\n id = {d008ca80-79d9-3341-9312-cc6e8931b33e},\n created = {2017-10-13T10:09:23.564Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.564Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Siano, R. and Pusino, V. and Minzioni, P. and Cristiani, I. and Langrock, C. and Fejer, M.M. and Martinelli, M. and Degiorgio, V.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n \n\n \n \n \n \n \n Real-time 100-Gb/s POLMUX RZ-DQPSK transmission over uncompensated 500 km of SSMF by optical phase conjugation.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Martelli, P.; Siano, R.; Boffi, P.; Ferrario, M.; Righetti, A.; Martinelli, M.; Pusino, V.; Minzioni, P.; Cristiani, I.; Degiorgio, V.; Langrock, C.; and Fejer, M.\n\n\n \n\n\n\n In Conference on Optical Fiber Communication, Technical Digest Series, 2009. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Real-time 100-Gb/s POLMUX RZ-DQPSK transmission over uncompensated 500 km of SSMF by optical phase conjugation},\n type = {inproceedings},\n year = {2009},\n id = {6bbaef55-a404-32db-bf9c-5f99d1291e88},\n created = {2017-10-13T10:09:23.765Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.765Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present an effective solution for the upgrade of a highly dispersive link to POLMUX RZ-DQPSK 100-Gb/s transmission. Dispersion compensation is obtained by properly inserting a single polarization-insensitive phase-conjugation device along the link. © 2009 IEEE.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Martelli, P. and Siano, R. and Boffi, P. and Ferrario, M. and Righetti, A. and Martinelli, M. and Pusino, V. and Minzioni, P. and Cristiani, I. and Degiorgio, V. and Langrock, C. and Fejer, M.M.},\n booktitle = {Conference on Optical Fiber Communication, Technical Digest Series}\n}\n\n We present an effective solution for the upgrade of a highly dispersive link to POLMUX RZ-DQPSK 100-Gb/s transmission. Dispersion compensation is obtained by properly inserting a single polarization-insensitive phase-conjugation device along the link. © 2009 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n Real-time 100-Gb/s POLMUX RZ-DQPSK transmission over uncompensated 500 km of SSMF by optical phase conjugation.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Martelli, P.; Siano, R.; Boffi, P.; Ferrario, M.; Pusino, V.; Minzioni, P.; Cristiani, I.; Degiorgio, V.; Langrock, C.; and Fejer\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2009. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Real-time 100-Gb/s POLMUX RZ-DQPSK transmission over uncompensated 500 km of SSMF by optical phase conjugation},\n type = {inproceedings},\n year = {2009},\n id = {c4150ba0-ac6a-35d1-94e5-31c0b930e9f1},\n created = {2017-10-13T10:09:23.938Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.938Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present an effective solution for the upgrade of a highly dispersive link to POLMUX RZ-DQPSK 100-Gb/s transmission. Dispersion compensation is obtained by properly inserting a single polarization-insensitive phase-conjugation device along the link. © 2008 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Martelli, P. and Siano, R. and Boffi, P. and Ferrario, M. and Pusino, V. and Minzioni, P. and Cristiani, I and Degiorgio, V. and Langrock, C. and Fejer, undefined},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We present an effective solution for the upgrade of a highly dispersive link to POLMUX RZ-DQPSK 100-Gb/s transmission. Dispersion compensation is obtained by properly inserting a single polarization-insensitive phase-conjugation device along the link. © 2008 Optical Society of America.\n
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\n \n \n\n \n \n \n \n \n Endless polarization stabilizer for high bit-rate polarization-division multiplexed optical systems.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Pietralunga, S.; Righetti, A.; Siano, R.; Torregiani, M.; and Martinelli, M.\n\n\n \n\n\n\n In OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference, 2008. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Endless polarization stabilizer for high bit-rate polarization-division multiplexed optical systems},\n type = {inproceedings},\n year = {2008},\n id = {2953e857-6419-32c5-ae7c-c97b81cc0ae2},\n created = {2017-10-13T10:09:20.579Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.579Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {An endless polarization stabilization method is applied to a 40-Gbit/s RZ-DQPSK polarization-division multiplexed optical system. The effectivness of the polarization stabilizer in allowing the polarization demultiplexing of the two orthogonally polarized channels is experimentally verified. © 2008 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Pietralunga, S.M. and Righetti, A. and Siano, R. and Torregiani, M. and Martinelli, M.},\n doi = {10.1109/OFC.2008.4528222},\n booktitle = {OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference}\n}\n\n An endless polarization stabilization method is applied to a 40-Gbit/s RZ-DQPSK polarization-division multiplexed optical system. The effectivness of the polarization stabilizer in allowing the polarization demultiplexing of the two orthogonally polarized channels is experimentally verified. © 2008 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Measurement of PMD tolerance in 40-Gb/s polarization-multiplexed RZ-DQPSK.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n Optics Express, 16(17). 2008.\n \n\n\n\n
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\n\n\n@article{\n title = {Measurement of PMD tolerance in 40-Gb/s polarization-multiplexed RZ-DQPSK},\n type = {article},\n year = {2008},\n volume = {16},\n id = {59f50e05-dc8f-3467-9974-5e58128f0f12},\n created = {2017-10-13T10:09:20.841Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.841Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We experimentally investigate the first-order polarization-mode dispersion (PMD) tolerance of two polarization-multiplexed (POLMUX) RZ-DQPSK signals at overall 40 Gb/s. The polarization demultiplexing is enabled by an automatic endless polarization stabilizer. Time-interleaving the two orthogonally polarized RZ-DQPSK signals minimizes the crosstalk due to the non-ideal polarization stabilization, while it represents the worst-case for the PMD-induced crosstalk. Bit-error rate measurements are performed both in back-to-back and after 25-km standard single-mode fiber. The PMD tolerance is evaluated as a function of the instantaneous differential group delay, introduced by a first-order PMD emulator. 40-Gb/s POLMUX RZ-DQPSK is more sensitive to PMD than single-polarization 20-Gb/s DQPSK, while it is more PMD-tolerant than 40-Gb/s NRZ-OOK. Besides, its chromatic dispersion robustness is similar to the single-polarization 20-Gb/s DQPSK. The combination of POLMUX and DQPSK is therefore very promising in view of transmission systems at high bit-rate. © 2008 Optical Society of America.},\n bibtype = {article},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1364/OE.16.013398},\n journal = {Optics Express},\n number = {17}\n}\n\n We experimentally investigate the first-order polarization-mode dispersion (PMD) tolerance of two polarization-multiplexed (POLMUX) RZ-DQPSK signals at overall 40 Gb/s. The polarization demultiplexing is enabled by an automatic endless polarization stabilizer. Time-interleaving the two orthogonally polarized RZ-DQPSK signals minimizes the crosstalk due to the non-ideal polarization stabilization, while it represents the worst-case for the PMD-induced crosstalk. Bit-error rate measurements are performed both in back-to-back and after 25-km standard single-mode fiber. The PMD tolerance is evaluated as a function of the instantaneous differential group delay, introduced by a first-order PMD emulator. 40-Gb/s POLMUX RZ-DQPSK is more sensitive to PMD than single-polarization 20-Gb/s DQPSK, while it is more PMD-tolerant than 40-Gb/s NRZ-OOK. Besides, its chromatic dispersion robustness is similar to the single-polarization 20-Gb/s DQPSK. The combination of POLMUX and DQPSK is therefore very promising in view of transmission systems at high bit-rate. © 2008 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n 20-Gb/s PolDM duobinary transmission in a 575-km SSMF link with automatic polarization stabilization and optical dispersion compensation.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In 2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS, 2008. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {20-Gb/s PolDM duobinary transmission in a 575-km SSMF link with automatic polarization stabilization and optical dispersion compensation},\n type = {inproceedings},\n year = {2008},\n id = {05fb7966-50a2-3d44-a31f-0cee5945493b},\n created = {2017-10-13T10:09:21.148Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.148Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {20-Gb/s transmission exploiting duobinary modulation and polarization-division multiplexing is shown. Experimental performances are evaluated in presence of an automatic polarization stabilizer and a double-pass optical dispersion compensator over 575-km SSMF. © 2008 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1109/CLEO.2008.4551333},\n booktitle = {2008 Conference on Quantum Electronics and Laser Science Conference on Lasers and Electro-Optics, CLEO/QELS}\n}\n\n 20-Gb/s transmission exploiting duobinary modulation and polarization-division multiplexing is shown. Experimental performances are evaluated in presence of an automatic polarization stabilizer and a double-pass optical dispersion compensator over 575-km SSMF. © 2008 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Experimental comparison between optimized fiber Bragg grating and delay-line interferometer for DPSK signal demodulation.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Martelli, P.; Parolari, P.; Siano, R.; Martinelli, M.; Gatti, D.; Laporta, P.; and Longhi, S.\n\n\n \n\n\n\n In European Conference on Optical Communication, ECOC, 2008. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Experimental comparison between optimized fiber Bragg grating and delay-line interferometer for DPSK signal demodulation},\n type = {inproceedings},\n year = {2008},\n id = {8620d0d6-0a61-339a-818f-8fb2d275d9b2},\n created = {2017-10-13T10:09:21.706Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.706Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {10Gb/s DPSK demodulation effectiveness of a suitably-designed FBG structure is compared with the performance achieved by a compact integrated-optic MZDI. BER measures versus operation stability are reported © 2008 IEEE.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Marazzi, L. and Martelli, P. and Parolari, P. and Siano, R. and Martinelli, M. and Gatti, D. and Laporta, P. and Longhi, S.},\n doi = {10.1109/ECOC.2008.4729429},\n booktitle = {European Conference on Optical Communication, ECOC}\n}\n\n 10Gb/s DPSK demodulation effectiveness of a suitably-designed FBG structure is compared with the performance achieved by a compact integrated-optic MZDI. BER measures versus operation stability are reported © 2008 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n 20-Gb/s PolDM duobinary transmission over 350-km SSMF supported by a polarization stabilizer and an optical dispersion compensator.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 20(13). 2008.\n \n\n\n\n
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\n\n\n@article{\n title = {20-Gb/s PolDM duobinary transmission over 350-km SSMF supported by a polarization stabilizer and an optical dispersion compensator},\n type = {article},\n year = {2008},\n keywords = {Dispersion compensation devices,Fiber-optic communications},\n volume = {20},\n id = {62700cb5-d4ad-3171-9e27-c5d9c11e03c5},\n created = {2017-10-13T10:09:21.771Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.771Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A 20-Gb/s transmission over 350-km standard single-mode fiber exploiting duobinary dispersion robustness and polarization-division multiplexing has been demonstrated. The system performance is evaluated employing an automatic endless polarization stabilizer and a suitably designed transmitter-side optical dispersion compensator. © 2008 IEEE.},\n bibtype = {article},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1109/LPT.2008.924308},\n journal = {IEEE Photonics Technology Letters},\n number = {13}\n}\n\n A 20-Gb/s transmission over 350-km standard single-mode fiber exploiting duobinary dispersion robustness and polarization-division multiplexing has been demonstrated. The system performance is evaluated employing an automatic endless polarization stabilizer and a suitably designed transmitter-side optical dispersion compensator. © 2008 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n 20-Gb/s PolDM duobinary transmission in a 575-km SSMF link with automatic polarization stabilization and optical dispersion compensation.\n \n \n \n\n\n \n Boffi, P.; Ferrario, M.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2008. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {20-Gb/s PolDM duobinary transmission in a 575-km SSMF link with automatic polarization stabilization and optical dispersion compensation},\n type = {inproceedings},\n year = {2008},\n id = {745de5d4-4c7f-35b4-9e1d-8eb636f48c7f},\n created = {2017-10-13T10:09:21.885Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.885Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {20-Gb/s transmission exploiting duobinary modulation and polarization-division multiplexing is shown. Experimental performances are evaluated in presence of an automatic polarization stabilizer and a double-pass optical dispersion compensator over 575-km SSMF. © 2008 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Ferrario, M. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n 20-Gb/s transmission exploiting duobinary modulation and polarization-division multiplexing is shown. Experimental performances are evaluated in presence of an automatic polarization stabilizer and a double-pass optical dispersion compensator over 575-km SSMF. © 2008 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Endless polarization stabilizer for high bit-rate polarization-division multiplexed optical systems.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Pietralunga, S.; Righetti, A.; Siano, R.; Torregiani, M.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2008. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Endless polarization stabilizer for high bit-rate polarization-division multiplexed optical systems},\n type = {inproceedings},\n year = {2008},\n id = {6e5f346b-04e0-3af9-a738-4bb04f737a46},\n created = {2017-10-13T10:09:21.991Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.991Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {An endless polarization stabilization method is applied to a 40-Gbit/s RZ-DQPSK polarization-division multiplexed optical system. The effectivness of the polarization stabilizer in allowing the polarization demultiplexing of the two orthogonally polarized channels is experimentally verified. © 2007 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Pietralunga, S.M. and Righetti, A. and Siano, R. and Torregiani, M. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n An endless polarization stabilization method is applied to a 40-Gbit/s RZ-DQPSK polarization-division multiplexed optical system. The effectivness of the polarization stabilizer in allowing the polarization demultiplexing of the two orthogonally polarized channels is experimentally verified. © 2007 Optical Society of America.\n
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\n \n \n\n \n \n \n \n \n Impact of the electro-optical modulator on CAPS code dispersion tolerance.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Conference on Lasers and Electro-Optics Europe - Technical Digest, 2007. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {Impact of the electro-optical modulator on CAPS code dispersion tolerance},\n type = {inproceedings},\n year = {2007},\n id = {7d370e78-e9f5-3ce7-970d-4afec13de155},\n created = {2017-10-13T10:09:17.904Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.904Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Boffi, P. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1109/CLEOE-IQEC.2007.4386440},\n booktitle = {Conference on Lasers and Electro-Optics Europe - Technical Digest}\n}\n\n \n\n \n \n \n \n \n Impact of the electro-optical modulator on CAPS code dispersion tolerance.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Martelli, P.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2007. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {Impact of the electro-optical modulator on CAPS code dispersion tolerance},\n type = {inproceedings},\n year = {2007},\n id = {265242bf-30be-3a76-a759-855bdda348ac},\n created = {2017-10-13T10:09:20.339Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.339Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Boffi, P. and Marazzi, L. and Martelli, P. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n \n\n \n \n \n \n \n Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2007. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km},\n type = {inproceedings},\n year = {2007},\n id = {5946d3e5-8785-3adf-a9e7-056c8a0178d2},\n created = {2017-10-13T10:09:20.516Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.516Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Conference on Lasers and Electro-Optics, 2007, CLEO 2007, 2007. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km},\n type = {inproceedings},\n year = {2007},\n id = {e5314fd6-2e9c-3979-84b0-31f61b64f1ec},\n created = {2017-10-13T10:09:21.388Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.388Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1109/CLEO.2007.4453464},\n booktitle = {Conference on Lasers and Electro-Optics, 2007, CLEO 2007}\n}\n\n Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2007. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km},\n type = {inproceedings},\n year = {2007},\n id = {0b74ab30-a600-3a4a-a150-3dc984038cd2},\n created = {2017-10-13T10:09:21.438Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.438Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series, 2007. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km},\n type = {inproceedings},\n year = {2007},\n id = {cd3f8039-0c6e-31ac-a4a7-9867a3014c3a},\n created = {2017-10-13T10:09:21.568Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.568Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. ©2007 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n doi = {10.1109/QELS.2007.4431241},\n booktitle = {Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series}\n}\n\n Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. ©2007 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2007. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Uncompensated 20 Gb/s duobinary polarization division multiplexing transmission over 200 km},\n type = {inproceedings},\n year = {2007},\n id = {e1cfac1c-71bb-388a-bba3-b83f0dc84b25},\n created = {2017-10-13T10:09:22.082Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.082Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Transmission of 20 Gb/s optical signal over 200 km of uncompensated SMF fiber is achieved. The duobinary format dispersion robustness has been exploited together with polarization division multiplexing to significantly increase the maximum uncompensated reach. © 2007 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of OPC insertion in a WDM link.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Martelli, P.; Gatto, A.; Martinelli, M.; Minzioni, P.; Cristiani, I.; and Degiorgio, V.\n\n\n \n\n\n\n In Conference on Lasers and Electro-Optics Europe - Technical Digest, 2007. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {Impact of OPC insertion in a WDM link},\n type = {inproceedings},\n year = {2007},\n id = {3e34207c-a918-3297-9cdb-69bd6b961adc},\n created = {2017-10-13T10:09:22.157Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.157Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Martelli, P. and Gatto, A. and Martinelli, M. and Minzioni, P. and Cristiani, I. and Degiorgio, V.},\n doi = {10.1109/CLEOE-IQEC.2007.4386437},\n booktitle = {Conference on Lasers and Electro-Optics Europe - Technical Digest}\n}\n\n \n\n \n \n \n \n \n Impact of OPC insertion in a WDM link.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Martelli, P.; Gatto, A.; Martinelli, M.; Minzionf, P.; Cristianf, I.; and Degiorgio, V.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2007. \n \n\n\n\n
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\n\n\n\n@inproceedings{\n title = {Impact of OPC insertion in a WDM link},\n type = {inproceedings},\n year = {2007},\n id = {538b8e08-67fb-3504-ac6c-503770ce93b6},\n created = {2017-10-13T10:09:22.458Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.458Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Martelli, P. and Gatto, A. and Martinelli, M. and Minzionf, P. and Cristianf, I. and Degiorgio, V.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n \n\n \n \n \n \n \n Polarization stabilizer for polarization-division multiplexed optical systems.\n \n \n \n\n\n \n Martelli, P.; Boffi, P.; Ferrario, M.; Marazzi, L.; Parolari, P.; Pietralunga, S.; Siano, R.; Righetti, A.; and Martinelli, M.\n\n\n \n\n\n\n In 2007 33rd European Conference and Exhibition of Optical Communication, ECOC 2007, 2007. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Polarization stabilizer for polarization-division multiplexed optical systems},\n type = {inproceedings},\n year = {2007},\n id = {d09bc032-d37a-379d-8c51-6d37a57e7013},\n created = {2017-10-13T10:09:22.597Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.597Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The effectiveness of a magneto-optic polarization stabilizer in demultiplexing two polarization-division multiplexed channels is experimentally demonstrated. Bit-error rate measures are presented for RZ-OOK modulation format at 10 Gb/s.},\n bibtype = {inproceedings},\n author = {Martelli, P. and Boffi, P. and Ferrario, M. and Marazzi, L. and Parolari, P. and Pietralunga, S.M. and Siano, R. and Righetti, A. and Martinelli, M.},\n booktitle = {2007 33rd European Conference and Exhibition of Optical Communication, ECOC 2007}\n}\n\n The effectiveness of a magneto-optic polarization stabilizer in demultiplexing two polarization-division multiplexed channels is experimentally demonstrated. Bit-error rate measures are presented for RZ-OOK modulation format at 10 Gb/s.\n
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\n \n \n\n \n \n \n \n \n DQPSK Receiver tolerance to transmitter frequency stability.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Siano, R.; Feroldi, M.; and Martinelli, M.\n\n\n \n\n\n\n In IEEE International Conference on Communications, volume 6, 2006. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {DQPSK Receiver tolerance to transmitter frequency stability},\n type = {inproceedings},\n year = {2006},\n keywords = {DQPSK,Modulation format,Phase modulation},\n volume = {6},\n id = {20d070e2-e6b4-32ba-8420-69fab06c16a4},\n created = {2017-10-13T10:09:18.984Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.984Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {In case of Differential Quadrature Phase Shift Keying transmission, the diode laser frequency instability affects the quality of the received signal. Free-running transmitters are employed to experimentally evaluate the tolerance of the interferometric DQPSK receiver to this instability. Heterodyne measure of the frequency offset is discussed for different transmitters. Experimental data are related both with BER performance and power penalty. Polarization-dependent delay impairment is isolated as well. © 2006 IEEE.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Siano, R. and Feroldi, M. and Martinelli, M.},\n doi = {10.1109/ICC.2006.255197},\n booktitle = {IEEE International Conference on Communications}\n}\n\n In case of Differential Quadrature Phase Shift Keying transmission, the diode laser frequency instability affects the quality of the received signal. Free-running transmitters are employed to experimentally evaluate the tolerance of the interferometric DQPSK receiver to this instability. Heterodyne measure of the frequency offset is discussed for different transmitters. Experimental data are related both with BER performance and power penalty. Polarization-dependent delay impairment is isolated as well. © 2006 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of Laser Frequency Offset on DQPSK Direct.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Siano, R.; Feroldi, M.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2006. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of Laser Frequency Offset on DQPSK Direct},\n type = {inproceedings},\n year = {2006},\n id = {9e39290e-2ac8-314e-9201-8eaa52a2248e},\n created = {2017-10-13T10:09:19.178Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.178Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization -dependent delay impairment is isolated as well. © 2005 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Siano, R. and Feroldi, M. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization -dependent delay impairment is isolated as well. © 2005 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Cross phase modulation penalties in polarization-multiplexed RZ-DQPSK transmission.\n \n \n \n\n\n \n Siano, R.; Marazzi, L.; Boffi, P.; Martelli, P.; Parolari, P.; Righetti, A.; and Maitinelli, M.\n\n\n \n\n\n\n In Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006, 2006. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Cross phase modulation penalties in polarization-multiplexed RZ-DQPSK transmission},\n type = {inproceedings},\n year = {2006},\n id = {9d388518-1d03-389b-b28b-585371db72ed},\n created = {2017-10-13T10:09:20.040Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.040Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {XPM impairment on PolDM RZ-DQPSK transmission is experimentally investigated over 50 km uncompensated SMF fiber. Measured propagation penalties due to a 50 or 100 GHz spaced RZ-shaped channel at different power and state of polarization are discussed. © 2006 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Siano, R. and Marazzi, L. and Boffi, P. and Martelli, P. and Parolari, P. and Righetti, A. and Maitinelli, M.},\n doi = {10.1109/CLEO.2006.4628066},\n booktitle = {Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006}\n}\n\n XPM impairment on PolDM RZ-DQPSK transmission is experimentally investigated over 50 km uncompensated SMF fiber. Measured propagation penalties due to a 50 or 100 GHz spaced RZ-shaped channel at different power and state of polarization are discussed. © 2006 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n 40-Gb/s RZ-DQPSK Time-Polarization interleaving.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Martelli, P.; Paradiso, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2006. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {40-Gb/s RZ-DQPSK Time-Polarization interleaving},\n type = {inproceedings},\n year = {2006},\n id = {a5836c80-564d-3516-92cb-77e4f76c2718},\n created = {2017-10-13T10:09:20.632Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:20.632Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Time-polarization interleaving 40 -Gb/s RZ-DQPSK with 100-ps symbol-slot is received with integrated equipment designed for 10 -Gsymbol/s DPSK detection without polarization demultiplexing. BER comparison with other 40Gb/s equivalent modulation formats is experimentall y investigated in back-to-back configuration. © 2005 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Marazzi, L. and Martelli, P. and Paradiso, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Time-polarization interleaving 40 -Gb/s RZ-DQPSK with 100-ps symbol-slot is received with integrated equipment designed for 10 -Gsymbol/s DPSK detection without polarization demultiplexing. BER comparison with other 40Gb/s equivalent modulation formats is experimentall y investigated in back-to-back configuration. © 2005 Optical Society of America.\n
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\n \n \n\n \n \n \n \n \n Influence of pump parameters on two-pump optical parametric amplification.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Rognoni, E.; and Martinelli, M.\n\n\n \n\n\n\n Journal of Lightwave Technology, 23(8). 2005.\n \n\n\n\n
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\n\n\n@article{\n title = {Influence of pump parameters on two-pump optical parametric amplification},\n type = {article},\n year = {2005},\n keywords = {Fiber Raman amplifier,Nonlinear optics,Optical fiber communications,Optical mixing,Optical noise,Optical parametric amplifiers (OPAs)},\n volume = {23},\n id = {10d8549a-0710-3dd6-8d4b-320637431a6e},\n created = {2017-10-13T10:09:16.592Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.592Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {An analysis of two-pump optical parametric amplifiers is proposed in order to evidence strategies to project and develop flat two-pump fiber parametric amplifiers (2P-OPAs). Amplifier gain profile is evaluated through a model that takes into account the four-wave mixing process with pump depletion. Disturbing influence of degenerate three-wave mixing processes is separately addressed. Through the analysis, important 2P-OPA project guidelines are obtained. Theoretical forecasts are confirmed by experimental measurements on different 2P-OPAs, realized by changing power and spectral allocations of the two pumps, obtained by Raman amplification. © 2005 IEEE.},\n bibtype = {article},\n author = {Parolari, P. and Marazzi, L. and Rognoni, E. and Martinelli, M.},\n doi = {10.1109/JLT.2005.850018},\n journal = {Journal of Lightwave Technology},\n number = {8}\n}\n\n An analysis of two-pump optical parametric amplifiers is proposed in order to evidence strategies to project and develop flat two-pump fiber parametric amplifiers (2P-OPAs). Amplifier gain profile is evaluated through a model that takes into account the four-wave mixing process with pump depletion. Disturbing influence of degenerate three-wave mixing processes is separately addressed. Through the analysis, important 2P-OPA project guidelines are obtained. Theoretical forecasts are confirmed by experimental measurements on different 2P-OPAs, realized by changing power and spectral allocations of the two pumps, obtained by Raman amplification. © 2005 IEEE.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of laser frequency offset on DQPSK direct detection.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Siano, R.; Feroldi, M.; and Martinelli, M.\n\n\n \n\n\n\n In Quantum Electronics and Laser Science Conference (QELS), volume 3, 2005. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of laser frequency offset on DQPSK direct detection},\n type = {inproceedings},\n year = {2005},\n volume = {3},\n id = {27364e26-2aa3-3a2f-a48c-3961bc48433c},\n created = {2017-10-13T10:09:18.417Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:18.417Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization-dependent delay impairment is isolated as well. © 2005 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Siano, R. and Feroldi, M. and Martinelli, M.},\n booktitle = {Quantum Electronics and Laser Science Conference (QELS)}\n}\n\n Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization-dependent delay impairment is isolated as well. © 2005 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of Laser Frequency Offset on DQPSK Direct.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Siano, R.; Feroldi, M.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2005. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of Laser Frequency Offset on DQPSK Direct},\n type = {inproceedings},\n year = {2005},\n id = {9849e21f-ffe6-3052-a3e0-20447ccbefe1},\n created = {2017-10-13T10:09:19.484Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.484Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization -dependent delay impairment is isolated as well. © 2005 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Siano, R. and Feroldi, M. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization -dependent delay impairment is isolated as well. © 2005 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Impact of laser frequency offset on DQPSK direct detection.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Siano, R.; Feroldi, M.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2005. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Impact of laser frequency offset on DQPSK direct detection},\n type = {inproceedings},\n year = {2005},\n id = {e9e32a1e-d305-3f4d-8f3f-286de8705a58},\n created = {2017-10-13T10:09:19.546Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.546Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization -dependent delay impairment is isolated as well. © 2005 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Siano, R. and Feroldi, M. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned -measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization -dependent delay impairment is isolated as well. © 2005 Optical Society of America.\n
\n\n\n\n \n\n \n \n \n \n \n Two pump OPA for OTDM pulses amplification.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Rognoni, E.; Gaviraghi, P.; and Martinelli, M.\n\n\n \n\n\n\n Volume 164 2005.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@book{\n title = {Two pump OPA for OTDM pulses amplification},\n type = {book},\n year = {2005},\n source = {IFIP Advances in Information and Communication Technology},\n volume = {164},\n id = {2d04b94f-effb-3414-b371-be8595cea013},\n created = {2017-10-13T10:09:19.766Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:19.766Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Necessity to exploit new bandwidth has moved research interest towards new amplification solution, which support the exploitation of the fiber bandwidth and of short optical pulses. 2P-OPA seems quite promising as they offer high project flexibility, high gain uniformity and low accumulated dispersion. We present and discuss a 2P-OPA realization and its behavior with CW and picosecond pulses. © 2005 by International Federation for Information Processing.},\n bibtype = {book},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Rognoni, E. and Gaviraghi, P. and Martinelli, M.}\n}\n\n Necessity to exploit new bandwidth has moved research interest towards new amplification solution, which support the exploitation of the fiber bandwidth and of short optical pulses. 2P-OPA seems quite promising as they offer high project flexibility, high gain uniformity and low accumulated dispersion. We present and discuss a 2P-OPA realization and its behavior with CW and picosecond pulses. © 2005 by International Federation for Information Processing.\n
\n\n\n\n \n\n \n \n \n \n \n Effect of optical filtering on 20-GBIT/S RZ-DQPSK transmission over 2000 km in a 64-channel DWDM system.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Martelli, P.; Paradiso, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n Volume 164 2005.\n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
\n\n\n \n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@book{\n title = {Effect of optical filtering on 20-GBIT/S RZ-DQPSK transmission over 2000 km in a 64-channel DWDM system},\n type = {book},\n year = {2005},\n source = {IFIP Advances in Information and Communication Technology},\n volume = {164},\n id = {ef67bfb3-3246-3226-b28a-3941d4e43861},\n created = {2017-10-13T10:09:21.938Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:21.938Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We analyze 20-Gb/s RZ-DQPSK transmission in a 33-GHz spaced 64-channel DWDM system over a 2000-km laboratory straight line. In particular filtering impact on DQPSK modulation format due to optical filter and a de-interleaver at the receiver and pre-filter at the transmitter are experimentally evaluated and commented. © 2005 by International Federation for Information Processing.},\n bibtype = {book},\n author = {Boffi, P. and Marazzi, L. and Martelli, P. and Paradiso, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.}\n}\n\n We analyze 20-Gb/s RZ-DQPSK transmission in a 33-GHz spaced 64-channel DWDM system over a 2000-km laboratory straight line. In particular filtering impact on DQPSK modulation format due to optical filter and a de-interleaver at the receiver and pre-filter at the transmitter are experimentally evaluated and commented. © 2005 by International Federation for Information Processing.\n
\n\n\n\n \n\n \n \n \n \n \n 40-Gb/s RZ-DQPSK Time-Polarization interleaving.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Martelli, P.; Paradiso, L.; Parolari, P.; Righetti, A.; Siano, R.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2005. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {40-Gb/s RZ-DQPSK Time-Polarization interleaving},\n type = {inproceedings},\n year = {2005},\n id = {b6082bf0-05b2-38ca-bc1c-8673120ab795},\n created = {2017-10-13T10:09:22.385Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:22.385Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Time-polarization interleaving 40 -Gb/s RZ-DQPSK with 100-ps symbol-slot is received with integrated equipment designed for 10 -Gsymbol/s DPSK detection without polarization demultiplexing. BER comparison with other 40Gb/s equivalent modulation formats is experimentall y investigated in back-to-back configuration. © 2005 Optical Society of America.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Marazzi, L. and Martelli, P. and Paradiso, L. and Parolari, P. and Righetti, A. and Siano, R. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Time-polarization interleaving 40 -Gb/s RZ-DQPSK with 100-ps symbol-slot is received with integrated equipment designed for 10 -Gsymbol/s DPSK detection without polarization demultiplexing. BER comparison with other 40Gb/s equivalent modulation formats is experimentall y investigated in back-to-back configuration. © 2005 Optical Society of America.\n
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\n \n \n\n \n \n \n \n \n Raman-Generated Pump Impact on Optical Parametric Amplification.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Seghizzi, S.; and Martinelli, M.\n\n\n \n\n\n\n IEEE Photonics Technology Letters, 16(1). 2004.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Raman-Generated Pump Impact on Optical Parametric Amplification},\n type = {article},\n year = {2004},\n keywords = {Fiber Raman amplifier,Noise measurement,Optical fiber communications,Optical noise,Optical parametric amplifiers (OPAs)},\n volume = {16},\n id = {e44a6337-df0d-34e8-9c98-168da52b70c6},\n created = {2017-10-13T10:09:16.816Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.816Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Continuous-wave (CW) Raman-generated pump impact on a fiber optical parametric amplifier (OPA) is analyzed. Different noise contributions associated to the pump are experimentally and theoretically evaluated. Gain and noise figure of the amplifier are presented and commented for different OPA configurations. By tightly filtering the CW Raman-generated pump an OPA noise figure approaching the 3 dB limit is achieved.},\n bibtype = {article},\n author = {Marazzi, L. and Parolari, P. and Seghizzi, S. and Martinelli, M.},\n doi = {10.1109/LPT.2003.818947},\n journal = {IEEE Photonics Technology Letters},\n number = {1}\n}\n\n Continuous-wave (CW) Raman-generated pump impact on a fiber optical parametric amplifier (OPA) is analyzed. Different noise contributions associated to the pump are experimentally and theoretically evaluated. Gain and noise figure of the amplifier are presented and commented for different OPA configurations. By tightly filtering the CW Raman-generated pump an OPA noise figure approaching the 3 dB limit is achieved.\n
\n\n\n\n \n\n \n \n \n \n \n 20 Gb/s differential quadrature phase-shift keying transmission over 2000 km in a 64-channel WDM system.\n \n \n \n\n\n \n Boffi, P.; Marazzi, L.; Paradiso, L.; Parolari, P.; Righetti, A.; Setti, D.; Siano, R.; Cigliutti, R.; Mottarella, D.; Franco, P.; and Martinelli, M.\n\n\n \n\n\n\n Optics Communications, 237(4-6). 2004.\n \n\n\n\n
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\n\n\n@article{\n title = {20 Gb/s differential quadrature phase-shift keying transmission over 2000 km in a 64-channel WDM system},\n type = {article},\n year = {2004},\n keywords = {Modulation formats,Optical fiber communication,Wavelength division multiplexing},\n volume = {237},\n id = {ca2b235b-b3c7-3ce4-a68f-f9d23c2b2d76},\n created = {2017-10-13T10:09:23.882Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:23.882Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present a 20 Gb/s return-to-zero differential quadrature phase-shift keying transmission over a 2000 km in a 33 GHz spaced 64-channel dense-WDM system. Successful transmission is demonstrated in a laboratory straight line, designed for standard intensity-modulated submarine systems. © 2004 Elsevier B.V. All rights reserved.},\n bibtype = {article},\n author = {Boffi, P. and Marazzi, L. and Paradiso, L. and Parolari, P. and Righetti, A. and Setti, D. and Siano, R. and Cigliutti, R. and Mottarella, D. and Franco, P. and Martinelli, M.},\n doi = {10.1016/j.optcom.2004.04.008},\n journal = {Optics Communications},\n number = {4-6}\n}\n\n We present a 20 Gb/s return-to-zero differential quadrature phase-shift keying transmission over a 2000 km in a 33 GHz spaced 64-channel dense-WDM system. Successful transmission is demonstrated in a laboratory straight line, designed for standard intensity-modulated submarine systems. © 2004 Elsevier B.V. All rights reserved.\n
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\n \n \n\n \n \n \n \n \n Double Rayleigh Scattering Noise in Lumped and Distributed Raman Amplifiers.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Bernardini, L.; and Martinelli, M.\n\n\n \n\n\n\n Journal of Lightwave Technology, 21(10). 2003.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Double Rayleigh Scattering Noise in Lumped and Distributed Raman Amplifiers},\n type = {article},\n year = {2003},\n keywords = {Double Rayleigh scattering,Fiber Raman amplifier (FRA),Multiple path interference (MPI),Optical fiber communications},\n volume = {21},\n id = {ef164fc1-da37-379f-894c-5e39176e00a4},\n created = {2017-10-13T10:09:16.295Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.295Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The double Rayleigh scattering noise in lumped and distributed Raman amplifiers was discussed. The analytical expression of the multiple path interference (MPI) induced by double Rayleigh scattered signal in fiber Raman amplifiers (FRA) was derived. The expression was found to be validated by comparison with an exact solution and by MPI measurements on four different lumped and distributed Raman amplifiers.},\n bibtype = {article},\n author = {Parolari, P. and Marazzi, L. and Bernardini, L. and Martinelli, M.},\n doi = {10.1109/JLT.2003.817705},\n journal = {Journal of Lightwave Technology},\n number = {10}\n}\n\n The double Rayleigh scattering noise in lumped and distributed Raman amplifiers was discussed. The analytical expression of the multiple path interference (MPI) induced by double Rayleigh scattered signal in fiber Raman amplifiers (FRA) was derived. The expression was found to be validated by comparison with an exact solution and by MPI measurements on four different lumped and distributed Raman amplifiers.\n
\n\n\n\n \n\n \n \n \n \n \n Two-stage Sagnac demultiplexer.\n \n \n \n\n\n \n Parolari, P.; Boffi, P.; Marazzi, L.; and Martinelli, M.\n\n\n \n\n\n\n Journal of Lightwave Technology, 21(8). 2003.\n \n\n\n\n
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\n\n\n@article{\n title = {Two-stage Sagnac demultiplexer},\n type = {article},\n year = {2003},\n keywords = {Demultiplexing,Fiber-optics communications,Semiconductor optical amplifiers (SOAs)},\n volume = {21},\n id = {42d70ba3-e125-310f-b10b-1b26481d5840},\n created = {2017-10-13T10:09:16.722Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.722Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Cascading a semiconductor optical amplifier (SOA)-based Sagnac interferometer with a second Sagnac stage allows significant improvement in the overall demultiplexer performance. A theoretical analysis and simulations show that the exploitation of a two-stage architecture results in a demultiplexing window sharpness and time compression. Eye-diagram and Q-factor experimental characterization at 2.5 Gb/s of the demultiplexer is presented, showing a 25% compression in time of the two-stage switching window and a 4.7 Q-factor improvement.},\n bibtype = {article},\n author = {Parolari, P. and Boffi, P. and Marazzi, L. and Martinelli, M.},\n doi = {10.1109/JLT.2003.815508},\n journal = {Journal of Lightwave Technology},\n number = {8}\n}\n\n Cascading a semiconductor optical amplifier (SOA)-based Sagnac interferometer with a second Sagnac stage allows significant improvement in the overall demultiplexer performance. A theoretical analysis and simulations show that the exploitation of a two-stage architecture results in a demultiplexing window sharpness and time compression. Eye-diagram and Q-factor experimental characterization at 2.5 Gb/s of the demultiplexer is presented, showing a 25% compression in time of the two-stage switching window and a 4.7 Q-factor improvement.\n
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\n \n \n\n \n \n \n \n \n Telecommunication fiber OPA analysis, project and characterization.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Toscani, I.; and Martinelli, M.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 4652, 2002. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Telecommunication fiber OPA analysis, project and characterization},\n type = {inproceedings},\n year = {2002},\n keywords = {Fiber,Optical parametric amplification,Third order nonlinearities},\n volume = {4652},\n id = {182c055f-06bf-3af3-908a-3720a8057f60},\n created = {2017-10-13T10:09:16.771Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.771Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {Extremely high is nowadays researchers' interest towards amplification techniques alternative to Erbium Doped Fiber Amplifiers (EDFA); driving force is the exploitation of new and larger fiber optic communication bandwidths. While EDFA gain relies on population inversion in an active material and thus amplification bandwidth is directly related to the doping ion energy levels, well known effects such as Raman and third order nonlinear susceptibility in optical fiber allow amplification not subject to this constraint. In optical parametric amplification, in particular, bandwidth shape and spectral collocation are determined by the choice of pump wavelength and power. Thus almost every spectral region can be reached provided that proper pump is available. We present a detailed analysis of optical parametric amplification in standard communication fiber, discussing different operation regime according to pump wavelength placement with respect to fiber zero dispersion wavelength. In particular attention is paid to the optical parametric amplifier gain bandwidth and saturation. We evidence that a key OPA project parameter is the relative phase between interacting waves, i.e. pump, signal and idler. This parameter not only allows comprehension of gain dynamics in the amplifier, but also can be controlled by engineering the nonlinear medium to improve OPA performances. Experimental verifications are also presented to validate the proposed analysis.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Toscani, I. and Martinelli, M.},\n doi = {10.1117/12.469567},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n Extremely high is nowadays researchers' interest towards amplification techniques alternative to Erbium Doped Fiber Amplifiers (EDFA); driving force is the exploitation of new and larger fiber optic communication bandwidths. While EDFA gain relies on population inversion in an active material and thus amplification bandwidth is directly related to the doping ion energy levels, well known effects such as Raman and third order nonlinear susceptibility in optical fiber allow amplification not subject to this constraint. In optical parametric amplification, in particular, bandwidth shape and spectral collocation are determined by the choice of pump wavelength and power. Thus almost every spectral region can be reached provided that proper pump is available. We present a detailed analysis of optical parametric amplification in standard communication fiber, discussing different operation regime according to pump wavelength placement with respect to fiber zero dispersion wavelength. In particular attention is paid to the optical parametric amplifier gain bandwidth and saturation. We evidence that a key OPA project parameter is the relative phase between interacting waves, i.e. pump, signal and idler. This parameter not only allows comprehension of gain dynamics in the amplifier, but also can be controlled by engineering the nonlinear medium to improve OPA performances. Experimental verifications are also presented to validate the proposed analysis.\n
\n\n\n\n \n\n \n \n \n \n \n Interferometric SOA-based cascaded wavelength conversion.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Cozza, S.; and Martinelli, M.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 4653, 2002. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Interferometric SOA-based cascaded wavelength conversion},\n type = {inproceedings},\n year = {2002},\n keywords = {Reshaping,Semiconductor optical amplifiers,Wavelength conversion},\n volume = {4653},\n id = {b634c8e7-11e0-3d58-8bfd-dcc37f6bba57},\n created = {2017-10-13T10:09:17.149Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.149Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {SOA-based wavelength conversion is obtained in an interferometric device exploiting two synchronous cascaded conversion processes in a SLALOM followed by a nonlinear filter. An accurate analysis and experimental eye-diagrams demonstrate significant signal quality improvement.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Cozza, S. and Martinelli, M.},\n doi = {10.1117/12.469642},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n SOA-based wavelength conversion is obtained in an interferometric device exploiting two synchronous cascaded conversion processes in a SLALOM followed by a nonlinear filter. An accurate analysis and experimental eye-diagrams demonstrate significant signal quality improvement.\n
\n\n\n\n \n\n \n \n \n \n \n Double Rayleigh backscatter noise measurements in discrete and distributed Raman amplifiers.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Bernardini, L.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2002. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Double Rayleigh backscatter noise measurements in discrete and distributed Raman amplifiers},\n type = {inproceedings},\n year = {2002},\n id = {f22fba9f-8c32-326f-92b0-c4c7c7534f69},\n created = {2023-05-29T11:52:27.656Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.656Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Multiple path interference measurements on four different discrete and distributed Raman amplifiers are presented. A novel synthetical expression of the MPI valid for both discrete and distributed Raman amplifiers is derived and simulations are also shown.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Bernardini, L. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Multiple path interference measurements on four different discrete and distributed Raman amplifiers are presented. A novel synthetical expression of the MPI valid for both discrete and distributed Raman amplifiers is derived and simulations are also shown.\n
\n\n\n\n \n\n \n \n \n \n \n Cascaded Sagnac interferometers for SOA-based demultiplexing.\n \n \n \n\n\n \n Boffi, P.; Parolari, P.; Marazzi, L.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2002. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Cascaded Sagnac interferometers for SOA-based demultiplexing},\n type = {inproceedings},\n year = {2002},\n id = {0663f73f-4a06-3a1b-8448-c0264cfcfa9c},\n created = {2023-05-29T11:52:27.707Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.707Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {Cascading a SOA-based Sagnac interferometer with a second filtering stage allows significant improvement in the demultiplexing window sharpness and time compression. Experiments show eye diagrams and Q-factor measurements.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Parolari, P. and Marazzi, L. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n Cascading a SOA-based Sagnac interferometer with a second filtering stage allows significant improvement in the demultiplexing window sharpness and time compression. Experiments show eye diagrams and Q-factor measurements.\n
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\n \n \n\n \n \n \n \n \n Analysis of a SOA based all-optical reshaper.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; and Martinelli, M.\n\n\n \n\n\n\n In Proceedings of SPIE - The International Society for Optical Engineering, volume 4216, 2001. \n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n \n \n \n \n \n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Analysis of a SOA based all-optical reshaper},\n type = {inproceedings},\n year = {2001},\n keywords = {All-optical devices,Cross gain modulation,Reshaping,Semiconductor optical amplifiers},\n volume = {4216},\n id = {ae31eb2c-30ec-3834-9ae3-ddab0f823013},\n created = {2017-10-13T10:09:16.667Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.667Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {We present the analysis of reshaping capabilities of an all-optical threshold circuit. The device is based on SOA's XGM with two amplifiers in a feedback configuration. Simulations and experimentations of the threshold behavior are proposed and commented.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Martinelli, M.},\n doi = {10.1117/12.414127},\n booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}\n}\n\n We present the analysis of reshaping capabilities of an all-optical threshold circuit. The device is based on SOA's XGM with two amplifiers in a feedback configuration. Simulations and experimentations of the threshold behavior are proposed and commented.\n
\n\n\n\n \n\n \n \n \n \n \n Enhanced wavelength conversion based on SOA XGM and XPM.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; Cozza, S.; and Martinelli, M.\n\n\n \n\n\n\n In Conference on Lasers and Electro-Optics Europe - Technical Digest, 2001. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Enhanced wavelength conversion based on SOA XGM and XPM},\n type = {inproceedings},\n year = {2001},\n id = {73fd72de-39d5-3e81-838e-76166ece4b21},\n created = {2017-10-13T10:09:17.798Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.798Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A wavelength converter to explore the switching characteristic of the semiconductor laser amplifier in a loop optical mirror (SLALOM) and the steep transfer function of a polarization maintaining fiber optical loop was proposed. The wavelength converter was based on two cascaded Sagnac interferometers to obtain steeper switching window. The window dimension was improved by engineering the position of the semiconductor optical amplifier (SOA) to allow higher bit rates.},\n bibtype = {inproceedings},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Cozza, S. and Martinelli, M.},\n booktitle = {Conference on Lasers and Electro-Optics Europe - Technical Digest}\n}\n\n A wavelength converter to explore the switching characteristic of the semiconductor laser amplifier in a loop optical mirror (SLALOM) and the steep transfer function of a polarization maintaining fiber optical loop was proposed. The wavelength converter was based on two cascaded Sagnac interferometers to obtain steeper switching window. The window dimension was improved by engineering the position of the semiconductor optical amplifier (SOA) to allow higher bit rates.\n
\n\n\n\n \n\n \n \n \n \n \n SOA-based all-optical threshold in a counter-propagating topology.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 2001. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {SOA-based all-optical threshold in a counter-propagating topology},\n type = {inproceedings},\n year = {2001},\n id = {8943c071-aa2d-37d2-ac9f-fd3dee1e50f1},\n created = {2023-05-29T11:52:27.710Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.710Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We present a novel all-optical threshold circuit, based on SOA's XGM into two amplifiers in a counter-propagating feedback configuration. Experimentations of the threshold behavior are proposed and preliminary results on its reshaping capability are commented.},\n bibtype = {inproceedings},\n author = {Parolari, P. and Marazzi, L. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We present a novel all-optical threshold circuit, based on SOA's XGM into two amplifiers in a counter-propagating feedback configuration. Experimentations of the threshold behavior are proposed and preliminary results on its reshaping capability are commented.\n
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\n \n \n\n \n \n \n \n \n Differential Kerr-induced XPM in dispersion shifted fiber for wavelength conversion.\n \n \n \n\n\n \n Marazzi, L.; Parolari, P.; Boffi, P.; and Martinelli, M.\n\n\n \n\n\n\n Optics Communications, 178(1). 2000.\n \n\n\n\n
\n\n\n\n \n\n \n \n doi\n \n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n \n \n 1 download\n \n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@article{\n title = {Differential Kerr-induced XPM in dispersion shifted fiber for wavelength conversion},\n type = {article},\n year = {2000},\n volume = {178},\n id = {2852bae1-d9e3-3216-a487-9db66e674da2},\n created = {2017-10-13T10:09:16.234Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.234Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A novel wavelength converter exploiting Kerr-due birefringence in a standard DS fiber based on a Kerr shutter architecture is proposed. A brief comparison with other common path configurations is presented. Wavelength conversion at 3 Gbit/s is achieved by employing standard EDFA for drive signal amplification.},\n bibtype = {article},\n author = {Marazzi, L. and Parolari, P. and Boffi, P. and Martinelli, M.},\n doi = {10.1016/S0030-4018(00)00647-7},\n journal = {Optics Communications},\n number = {1}\n}\n\n A novel wavelength converter exploiting Kerr-due birefringence in a standard DS fiber based on a Kerr shutter architecture is proposed. A brief comparison with other common path configurations is presented. Wavelength conversion at 3 Gbit/s is achieved by employing standard EDFA for drive signal amplification.\n
\n\n\n\n \n\n \n \n \n \n \n SOA based all-optical threshold.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Connen, M.; and Martinelli, M.\n\n\n \n\n\n\n In Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2000. \n \n\n\n\n
\n\n\n\n \n\n \n\n \n link\n \n \n\n bibtex\n \n\n \n \n \n abstract \n \n\n \n\n \n \n \n \n \n \n \n\n \n \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {SOA based all-optical threshold},\n type = {inproceedings},\n year = {2000},\n id = {21cedbf8-919e-3156-bb49-4fafa60229a1},\n created = {2017-10-13T10:09:17.018Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.018Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {An all-optical threshold device based on Cross-Gain Modulation (XGM) in semiconductor optical amplifiers (SOAs) is presented. The scheme employs two SOA optical inverters in a feedback configuration, leading to an all-optical circuit that operates both as threshold and comparator. Analysis of the device operation and further experimentations are presented and discussed.},\n bibtype = {inproceedings},\n author = {Parolari, Paola and Marazzi, Lucia and Connen, Matthieu and Martinelli, Mario},\n booktitle = {Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest}\n}\n\n An all-optical threshold device based on Cross-Gain Modulation (XGM) in semiconductor optical amplifiers (SOAs) is presented. The scheme employs two SOA optical inverters in a feedback configuration, leading to an all-optical circuit that operates both as threshold and comparator. Analysis of the device operation and further experimentations are presented and discussed.\n
\n\n\n\n \n\n \n \n \n \n \n Coherent-to-incoherent light conversion for optical correlators.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Rossetti, D.; Maier, G.; and Martinelli, M.\n\n\n \n\n\n\n Journal of Lightwave Technology, 18(9). 2000.\n \n\n\n\n
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\n\n\n@article{\n title = {Coherent-to-incoherent light conversion for optical correlators},\n type = {article},\n year = {2000},\n volume = {18},\n id = {57736ed3-7184-3a0e-9c08-2cb669ed8b52},\n created = {2017-10-13T10:09:17.546Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.546Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The authors present a novel coherent-to-amplified spontaneous emission (ASE) converter based on SOA's cross-gain modulation (XGM) in a counterpropagating configuration. Experimental characterizations of the ASE converter with bit-error rate (BER) measurements at 2.5 and 5 Gb/s are shown. The device capabilities are exploited in a delay lines optical recognizer at 2.5 Gb/s. Recognition is based on a coherent-to-incoherent light conversion followed by a fiber array correlation filter. Experimental evidence here reported shows performance improvement in comparison with a scheme which adopts a standard telecom source.},\n bibtype = {article},\n author = {Parolari, P. and Marazzi, L. and Rossetti, D. and Maier, G. and Martinelli, M.},\n doi = {10.1109/50.871707},\n journal = {Journal of Lightwave Technology},\n number = {9}\n}\n\n The authors present a novel coherent-to-amplified spontaneous emission (ASE) converter based on SOA's cross-gain modulation (XGM) in a counterpropagating configuration. Experimental characterizations of the ASE converter with bit-error rate (BER) measurements at 2.5 and 5 Gb/s are shown. The device capabilities are exploited in a delay lines optical recognizer at 2.5 Gb/s. Recognition is based on a coherent-to-incoherent light conversion followed by a fiber array correlation filter. Experimental evidence here reported shows performance improvement in comparison with a scheme which adopts a standard telecom source.\n
\n\n\n\n \n\n \n \n \n \n \n Programmable fiber Bragg gratings for spectral CDMA.\n \n \n \n\n\n \n Boffi, P.; Piccinin, D.; Parolari, P.; Aldeghi, R.; and Martinelli, M.\n\n\n \n\n\n\n In Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2000. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Programmable fiber Bragg gratings for spectral CDMA},\n type = {inproceedings},\n year = {2000},\n id = {14f02e0d-0a4a-303d-b3db-958034225488},\n created = {2017-10-13T10:09:17.852Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:17.852Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {A programmable fiber Bragg grating (FBG) encoding/decoding device for optical code-division multiple-access (CDMA) applications was experimentally studied. The use of piezoelectric elements useful for tuning the fiber grating response allowed very high flexibility in spectral encoding/decoding.},\n bibtype = {inproceedings},\n author = {Boffi, P. and Piccinin, D. and Parolari, P. and Aldeghi, R. and Martinelli, M.},\n booktitle = {Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest}\n}\n\n A programmable fiber Bragg grating (FBG) encoding/decoding device for optical code-division multiple-access (CDMA) applications was experimentally studied. The use of piezoelectric elements useful for tuning the fiber grating response allowed very high flexibility in spectral encoding/decoding.\n
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\n \n \n\n \n \n \n \n \n Amplified recirculating circuits for pseudo-continuous wave generation.\n \n \n \n\n\n \n Parolari, P.; Marazzi, L.; Boffi, P.; and Martinelli, M.\n\n\n \n\n\n\n Optics Communications, 165(4). 1999.\n \n\n\n\n
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\n\n\n@article{\n title = {Amplified recirculating circuits for pseudo-continuous wave generation},\n type = {article},\n year = {1999},\n volume = {165},\n id = {12e65a77-d7e0-311f-8455-da1f5c81f9e1},\n created = {2017-10-13T10:09:16.537Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2017-10-13T10:09:16.537Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {An analysis of amplified recirculating structures for producing a pseudo-continuous wave, PCW, signal is presented. Experimentations with amplification provided by EDFA and SOA are shown. Both the hold-on function and the switch-off function are analyzed. The comparison between structures with different amplifiers shows better duration performances for EDFAs, but faster all-optical operation capabilities for SOAs.},\n bibtype = {article},\n author = {Parolari, P. and Marazzi, L. and Boffi, P. and Martinelli, M.},\n doi = {10.1016/S0030-4018(99)00227-8},\n journal = {Optics Communications},\n number = {4}\n}\n\n An analysis of amplified recirculating structures for producing a pseudo-continuous wave, PCW, signal is presented. Experimentations with amplification provided by EDFA and SOA are shown. Both the hold-on function and the switch-off function are analyzed. The comparison between structures with different amplifiers shows better duration performances for EDFAs, but faster all-optical operation capabilities for SOAs.\n
\n\n\n\n \n\n \n \n \n \n \n Delay Line Optical Recognizer Based on Coherent-To-Chaotic Light Conversion.\n \n \n \n\n\n \n Maier, G.; Parolari, P.; Marazzi, L.; Sguazzotti, A.; and Martinelli, M.\n\n\n \n\n\n\n In Optics InfoBase Conference Papers, 1999. \n \n\n\n\n
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\n\n\n@inproceedings{\n title = {Delay Line Optical Recognizer Based on Coherent-To-Chaotic Light Conversion},\n type = {inproceedings},\n year = {1999},\n id = {07b8a961-8891-3c1d-919a-951324d82c09},\n created = {2023-05-29T11:52:27.757Z},\n file_attached = {false},\n profile_id = {4163312b-54ca-3be4-9189-12fa88d98681},\n last_modified = {2023-05-29T11:52:27.757Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {true},\n abstract = {We demonstrate a delay line optical recognizer at 2.5 Gbit/s. Recognition is based on a coherent-to-chaotic light conversion followed by a fiber array correlation filter. Experimental evidence shows performance improvement in comparison with a classical scheme as far as phase noise is concerned. An experimental characterization of the recognizer is reported. Methods for improving the recognition error probability are suggested.},\n bibtype = {inproceedings},\n author = {Maier, G. and Parolari, P. and Marazzi, L. and Sguazzotti, A. and Martinelli, M.},\n booktitle = {Optics InfoBase Conference Papers}\n}\n\n We demonstrate a delay line optical recognizer at 2.5 Gbit/s. Recognition is based on a coherent-to-chaotic light conversion followed by a fiber array correlation filter. Experimental evidence shows performance improvement in comparison with a classical scheme as far as phase noise is concerned. An experimental characterization of the recognizer is reported. Methods for improving the recognition error probability are suggested.\n
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