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\n  \n 2016\n \n \n (4)\n \n \n
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\n \n\n \n \n \n \n \n A Software-Defined Coherent Fiber Optic Sensor for Manufacturing Machine Diagnostic.\n \n \n \n\n\n \n Ferrario, M.; Mattarei, M.; Boffi, P.; and Martinelli, M.\n\n\n \n\n\n\n In Sensors Applications Symposium (SAS), 2016 IEEE, 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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@inproceedings{Ferrario2016,\nabstract = {A new approach to fiber optic sensing is proposed which combines the multi-parameter sensing capabilities of standard optical fibers with recent advances in demodulation schemes and digital signal processing (DSP) for coherent optical communication systems. A common HW that can fulfil multipurpose monitoring requests is obtained, where the information related to a specific physical parameter is recovered through a proper tailoring of the DSP. The fiber optic sensor thus becomes Software-Defined by the customer specific requirements, proving a cost-effective and versatile diagnostic solution for the achievement of sustainable predictive maintenance strategies in the manufacturing industry.},\nauthor = {Ferrario, Maddalena and Mattarei, Marco and Boffi, Pierpaolo and Martinelli, Mario},\nbooktitle = {Sensors Applications Symposium (SAS), 2016 IEEE},\ntitle = {{A Software-Defined Coherent Fiber Optic Sensor for Manufacturing Machine Diagnostic}},\nyear = {2016}\n}\n
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\n A new approach to fiber optic sensing is proposed which combines the multi-parameter sensing capabilities of standard optical fibers with recent advances in demodulation schemes and digital signal processing (DSP) for coherent optical communication systems. A common HW that can fulfil multipurpose monitoring requests is obtained, where the information related to a specific physical parameter is recovered through a proper tailoring of the DSP. The fiber optic sensor thus becomes Software-Defined by the customer specific requirements, proving a cost-effective and versatile diagnostic solution for the achievement of sustainable predictive maintenance strategies in the manufacturing industry.\n
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\n \n\n \n \n \n \n \n Ultrasonic Lamb Wave Detection in Aluminium Slabs by Coherent Fiber Optic Sensors.\n \n \n \n\n\n \n Mattarei, M.; Ferrario, M.; Boffi, P.; Martinelli, M.; and Sbarufatti, C.\n\n\n \n\n\n\n In 2016 Fotonica AEIT Italian Conference on Photonics Technologies, 2016. \n \n\n\n\n
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@inproceedings{Mattarei2016,\nabstract = {A novel sensing solution based on standard optical fibers combined with an innovative coherent detection scheme is proposed for ultrasonic strain wave detection in structural health monitoring. Sensor performance is experimentally proved and compared with the operation of piezoelectric transducers.},\nauthor = {Mattarei, Marco and Ferrario, Maddalena and Boffi, Pierpaolo and Martinelli, Mario and Sbarufatti, Claudio},\nbooktitle = {2016 Fotonica AEIT Italian Conference on Photonics Technologies},\ntitle = {{Ultrasonic Lamb Wave Detection in Aluminium Slabs by Coherent Fiber Optic Sensors}},\nyear = {2016}\n}\n
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\n A novel sensing solution based on standard optical fibers combined with an innovative coherent detection scheme is proposed for ultrasonic strain wave detection in structural health monitoring. Sensor performance is experimentally proved and compared with the operation of piezoelectric transducers.\n
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\n \n\n \n \n \n \n \n Single Sideband Modulation for Brillouin Optical Correlation Domanin Analysis.\n \n \n \n\n\n \n Morosi, J.; Ferrario, M.; Boffi, P.; and Martinelli, M.\n\n\n \n\n\n\n In 2016 Fotonica AEIT Italian Conference on Photonics Technologies, 2016. \n \n\n\n\n
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@inproceedings{Morosi2016,\nabstract = {A fiber optic distributed temperature and strain sensor, based on standard Brillouin Optical Correlation Domain Analisys (BOCDA) is implemented. Performance improvements achieved using a Single Sideband Suppressed Carrier (SSB-SC) modulator, instead of usual Dual Sideband (DSB) Modulation of the probe arm, are studied and experimentally evaluated.},\nauthor = {Morosi, Jacopo and Ferrario, Maddalena and Boffi, Pierpaolo and Martinelli, Mario},\nbooktitle = {2016 Fotonica AEIT Italian Conference on Photonics Technologies},\ntitle = {{Single Sideband Modulation for Brillouin Optical Correlation Domanin Analysis}},\nyear = {2016}\n}\n
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\n A fiber optic distributed temperature and strain sensor, based on standard Brillouin Optical Correlation Domain Analisys (BOCDA) is implemented. Performance improvements achieved using a Single Sideband Suppressed Carrier (SSB-SC) modulator, instead of usual Dual Sideband (DSB) Modulation of the probe arm, are studied and experimentally evaluated.\n
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\n \n\n \n \n \n \n \n Coherent Fiber Optic Temperature Sensor based on VCSEL direct modulation.\n \n \n \n\n\n \n Morosi, J.; Mattarei, M.; Ferrario, M.; Boffi, P.; and Martinelli, M.\n\n\n \n\n\n\n In 2016 Fotonica AEIT Italian Conference on Photonics Technologies, 2016. \n \n\n\n\n
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@inproceedings{Morosi2016a,\nabstract = {The wide wavelength tunability of Vertical Cavity Surface Emitting Laser (VCSEL) is exploited in a fiber optic coherent detection scheme to perform absolute and highly sensitive temperature measurements.},\nauthor = {Morosi, Jacopo and Mattarei, Marco and Ferrario, Maddalena and Boffi, Pierpaolo and Martinelli, Mario},\nbooktitle = {2016 Fotonica AEIT Italian Conference on Photonics Technologies},\ntitle = {{Coherent Fiber Optic Temperature Sensor based on VCSEL direct modulation}},\nyear = {2016}\n}\n
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\n The wide wavelength tunability of Vertical Cavity Surface Emitting Laser (VCSEL) is exploited in a fiber optic coherent detection scheme to perform absolute and highly sensitive temperature measurements.\n
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\n  \n 2014\n \n \n (1)\n \n \n
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\n \n\n \n \n \n \n \n \n Coherent fiber-optic sensor for vibration localization.\n \n \n \n \n\n\n \n Morosi, J.; Mattarei, M.; Ferrario, M.; Boffi, P.; and Martinelli, M.\n\n\n \n\n\n\n In 2014 Fotonica AEIT Italian Conference on Photonics Technologies, pages 1–4, may 2014. IEEE\n \n\n\n\n
\n\n\n\n \n \n \"CoherentPaper\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 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 \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
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@inproceedings{Morosi2014,\nabstract = {A novel distributed fiber-optic vibration sensor is proposed and experimentally demonstrated. The sensor relies on a dual Mach-Zehnder ring interferometric architecture associated to a new coherent detection scheme, borrowed from high bit rate coherent optical communications, which performs a completely passive management of polarization and phase variables of the received optical signal. The proposed solution thus makes feasible the actual in-field applicability of the cost-effectiveness and high sensitivity featured by interferometric sensors. Sensor performance in terms of vibration localization accuracy has been experimentally verified.},\nauthor = {Morosi, Jacopo and Mattarei, Marco and Ferrario, Maddalena and Boffi, Pierpaolo and Martinelli, Mario},\nbooktitle = {2014 Fotonica AEIT Italian Conference on Photonics Technologies},\nkeywords = {Accuracy,Demodulation,Dual Mach-Zehnder interferometer,Mach-Zehnder interferometers,Monitoring,Phase modulation,Sensors,coherent detection,coherent fiber-optic vibration sensor,distributed fiber-optic vibration sensor,dual Mach-Zehnder ring interferometric architectur,fiber-optic sensor,fibre optic sensors,high-bit rate coherent optical communications,light coherence,optical fibre polarisation,phase noise,phase variables,polarization variables,vibration localization,vibration measurement,vibrations},\nmonth = {may},\npages = {1--4},\npublisher = {IEEE},\nshorttitle = {Photonics Technologies, 2014 Fotonica AEIT Italian},\ntitle = {{Coherent fiber-optic sensor for vibration localization}},\nurl = {http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6843895},\nyear = {2014}\n}\n
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\n A novel distributed fiber-optic vibration sensor is proposed and experimentally demonstrated. The sensor relies on a dual Mach-Zehnder ring interferometric architecture associated to a new coherent detection scheme, borrowed from high bit rate coherent optical communications, which performs a completely passive management of polarization and phase variables of the received optical signal. The proposed solution thus makes feasible the actual in-field applicability of the cost-effectiveness and high sensitivity featured by interferometric sensors. Sensor performance in terms of vibration localization accuracy has been experimentally verified.\n
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\n  \n 2013\n \n \n (2)\n \n \n
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\n \n\n \n \n \n \n \n \n Synoptic Fiber Optic Sensor.\n \n \n \n \n\n\n \n Martinelli, M.; and Ferrario, M.\n\n\n \n\n\n\n 2013.\n \n\n\n\n
\n\n\n\n \n \n \"SynopticPaper\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 5 downloads\n \n \n\n \n \n \n \n \n \n \n\n  \n \n \n\n\n\n
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@misc{Martinelli2013,\nabstract = {A fiber optic sensor comprising: a laser source (10) which emits a first laser ray; an optical divider (11, 55, 60) which receives said first laser ray and provides a second laser ray (S) and a third laser ray (OL); a first optical fiber (20) which receives said second laser ray (S); a second optical fiber (24) which receives said third laser ray (OL); said first optical fiber (20) having the same length as said second optical fiber (24); said first optical fiber (20) and said second optical fiber (24) being side by side; a transmissive means (22, 35) associated with said first optical fiber through which said second laser ray (S) transits; a first reflection means (23, 37, 52, 64) for said third laser ray (OL) applied to said transmissive means (22, 35) to provide a reflected third laser ray (OL); a second reflection means (25, 52, 64) for said second laser ray (S) applied to said second optical fiber (24) to provide a reflected second laser ray (S); a first receiver means (13, 50, 55, 60) positioned between said optical divider (11, 55, 60) and said first optical fiber (20) to receive said second laser ray (S) reflected by said first reflection means (23, 37, 52, 64); a second receiver means (16, 51, 55, 60) positioned between said optical divider (11, 55, 60) and said second optical fiber (24) to receive said third laser ray (OL) reflected by said second reflection mean (25, 52, 64); a coherent receiver (30, 53, 55, 56) which receives said reflected second laser ray (S) and said reflected first laser ray (OL) to provide optical signals in quadrature (I and Q) at its output; opto/electric converters (31) which receive the optical outputs of the coherent receiver (30, 53, 55, 56) and produce analog electrical signals which are converted into digital signals (32) which are fed to a digital signal processor (33).},\nauthor = {Martinelli, Mario and Ferrario, Maddalena},\ninstitution = {Politecnico di Milano},\ntitle = {{Synoptic Fiber Optic Sensor}},\nurl = {http://www.google.com/patents/WO2013179118A1?cl=en},\nyear = {2013}\n}\n
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\n A fiber optic sensor comprising: a laser source (10) which emits a first laser ray; an optical divider (11, 55, 60) which receives said first laser ray and provides a second laser ray (S) and a third laser ray (OL); a first optical fiber (20) which receives said second laser ray (S); a second optical fiber (24) which receives said third laser ray (OL); said first optical fiber (20) having the same length as said second optical fiber (24); said first optical fiber (20) and said second optical fiber (24) being side by side; a transmissive means (22, 35) associated with said first optical fiber through which said second laser ray (S) transits; a first reflection means (23, 37, 52, 64) for said third laser ray (OL) applied to said transmissive means (22, 35) to provide a reflected third laser ray (OL); a second reflection means (25, 52, 64) for said second laser ray (S) applied to said second optical fiber (24) to provide a reflected second laser ray (S); a first receiver means (13, 50, 55, 60) positioned between said optical divider (11, 55, 60) and said first optical fiber (20) to receive said second laser ray (S) reflected by said first reflection means (23, 37, 52, 64); a second receiver means (16, 51, 55, 60) positioned between said optical divider (11, 55, 60) and said second optical fiber (24) to receive said third laser ray (OL) reflected by said second reflection mean (25, 52, 64); a coherent receiver (30, 53, 55, 56) which receives said reflected second laser ray (S) and said reflected first laser ray (OL) to provide optical signals in quadrature (I and Q) at its output; opto/electric converters (31) which receive the optical outputs of the coherent receiver (30, 53, 55, 56) and produce analog electrical signals which are converted into digital signals (32) which are fed to a digital signal processor (33).\n
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\n \n\n \n \n \n \n \n \n Filter for an optical fibre temperature sensor.\n \n \n \n \n\n\n \n Martinelli, M.; Boffi, P.; Belli, R.; and Avanzi, S.\n\n\n \n\n\n\n nov 2013.\n \n\n\n\n
\n\n\n\n \n \n \"FilterPaper\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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@misc{Martinelli2013a,\nabstract = {A filter for an optical fibre temperature sensor comprising at least one first and one second optical filter for filtering an optical pulse reflected by said optical fibre, characterised in that said at least one first and one second optical filter comprise standard commercial filters complying with ITU specifications, said optical pulse lying within the range from 1570 nm to 1580 nm.},\nauthor = {Martinelli, Mario and Boffi, Pierpaolo and Belli, Riccardo and Avanzi, Stefano},\ninstitution = {Politecnicp di Milano},\nmonth = {nov},\ntitle = {{Filter for an optical fibre temperature sensor}},\nurl = {https://www.google.com/patents/US8575540},\nyear = {2013}\n}\n
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\n A filter for an optical fibre temperature sensor comprising at least one first and one second optical filter for filtering an optical pulse reflected by said optical fibre, characterised in that said at least one first and one second optical filter comprise standard commercial filters complying with ITU specifications, said optical pulse lying within the range from 1570 nm to 1580 nm.\n
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\n  \n 2012\n \n \n (1)\n \n \n
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\n \n\n \n \n \n \n \n \n Sensor and method for determining temperature along an optical fibre.\n \n \n \n \n\n\n \n Martinelli, M.; and Belli, R.\n\n\n \n\n\n\n apr 2012.\n \n\n\n\n
\n\n\n\n \n \n \"SensorPaper\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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@misc{Martinelli2012,\nabstract = {An optical fiber temperature sensor comprising: an optical pulse generator; an optical fiber into which said optical pulses are fed; an optical receiver to receive said optical pulses reflected by said optical fiber and to convert them into an electrical signal; a processor which receives said electrical signal and determines the temperature along said optical fiber; said optical receiver comprising a first filter and a second filter to filter said optical pulse reflected by said optical fiber, characterized in that said first and said second filters filter two adjacent portions of anti-Stokes optical signals or of Stokes optical signals.},\nauthor = {Martinelli, Mario and Belli, Riccardo},\ninstitution = {Politecnico di Milano},\nmonth = {apr},\ntitle = {{Sensor and method for determining temperature along an optical fibre}},\nurl = {https://www.google.com/patents/US8152370},\nyear = {2012}\n}\n
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\n An optical fiber temperature sensor comprising: an optical pulse generator; an optical fiber into which said optical pulses are fed; an optical receiver to receive said optical pulses reflected by said optical fiber and to convert them into an electrical signal; a processor which receives said electrical signal and determines the temperature along said optical fiber; said optical receiver comprising a first filter and a second filter to filter said optical pulse reflected by said optical fiber, characterized in that said first and said second filters filter two adjacent portions of anti-Stokes optical signals or of Stokes optical signals.\n
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