All-Optical OFDM with Cyclic Prefix Insertion Using Flexible Wavelength Selective Switch Optical Processing. Schröder, J., Du, L. B., Carpenter, J., Eggleton, B. J., & Lowery, A. J. Journal of Lightwave Technology, 32(4):752–759, 2014. doi abstract bibtex We demonstrate that the optical Fourier transform and cyclic prefix in an all-optical OFDM transmitter\ n can be simultaneously implemented using a liquid crystal on silicon wavelength selective switch (WSS). The design uses\ n phase-modulated optical pulses at the inputs of the WSS; this has the advantage that the optical modulators are only\ n sampled by the optical pulses once per data-symbol, so that the transition times between the data symbols are\ n irrelevant to the performance of the system, allowing slow optical modulators to be used. Furthermore, each input of\ n the WSS can be assigned to any combination of output subcarrier frequencies, including frequencies unrelated to the\ n modal frequencies of the comb source. This is especially useful for testing in-service ultra-high bandwidth systems by\ n applying additional wavelengths. As an example, we generate a 10.08 Tb/s signal and transmit along 857.4 km of\ n fiber using 252 10-Gbaud subcarriers with a \ n $10%$\ n cyclic\ n prefix. We use an optically-banded digital subcarrier demultiplexer to simultaneously detect three subcarriers using a\ n single coherent receiver.
@article{schroder2014,
title = {All-Optical {{OFDM}} with Cyclic Prefix Insertion Using Flexible Wavelength Selective Switch Optical Processing},
author = {Schr{\"o}der, Jochen and Du, Liang Bangyuan and Carpenter, Joel and Eggleton, Benjamin J. and Lowery, Arthur J.},
year = {2014},
volume = {32},
pages = {752--759},
issn = {07338724},
doi = {10.1109/JLT.2013.2288638},
abstract = {We demonstrate that the optical Fourier transform and cyclic prefix in an all-optical OFDM transmitter\textbackslash n can be simultaneously implemented using a liquid crystal on silicon wavelength selective switch (WSS). The design uses\textbackslash n phase-modulated optical pulses at the inputs of the WSS; this has the advantage that the optical modulators are only\textbackslash n sampled by the optical pulses once per data-symbol, so that the transition times between the data symbols are\textbackslash n irrelevant to the performance of the system, allowing slow optical modulators to be used. Furthermore, each input of\textbackslash n the WSS can be assigned to any combination of output subcarrier frequencies, including frequencies unrelated to the\textbackslash n modal frequencies of the comb source. This is especially useful for testing in-service ultra-high bandwidth systems by\textbackslash n applying additional wavelengths. As an example, we generate a 10.08 Tb/s signal and transmit along 857.4 km of\textbackslash n fiber using 252 10-Gbaud subcarriers with a \textbackslash n \$10\%\$\textbackslash n cyclic\textbackslash n prefix. We use an optically-banded digital subcarrier demultiplexer to simultaneously detect three subcarriers using a\textbackslash n single coherent receiver.},
file = {/home/jschrod/MyPcloud/ZoteroPapers/schröder_et_al_2014_all-optical_ofdm_with_cyclic_prefix_insertion_using_flexible_wavelength.pdf},
journal = {Journal of Lightwave Technology},
keywords = {invited,LCOS,MyAll,MyJournals,OFDM,WSS},
number = {4}
}
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