All-optical OFDM with cyclic prefix insertion using flexible wavelength selective switch optical processing

Schroeder, J, Liang, D, Carpenter, J, Eggleton, B and Lowery, A 2014, 'All-optical OFDM with cyclic prefix insertion using flexible wavelength selective switch optical processing', Journal of Lightwave Technology, vol. 32, no. 4, pp. 752-759.


Document type: Journal Article
Collection: Journal Articles

Title All-optical OFDM with cyclic prefix insertion using flexible wavelength selective switch optical processing
Author(s) Schroeder, J
Liang, D
Carpenter, J
Eggleton, B
Lowery, A
Year 2014
Journal name Journal of Lightwave Technology
Volume number 32
Issue number 4
Start page 752
End page 759
Total pages 8
Publisher Institute of Electrical and Electronics Engineers
Abstract We demonstrate that the optical Fourier transform and cyclic prefix in an all-optical OFDM transmitter can be simultaneously implemented using a liquid crystal on silicon wavelength selective switch (WSS). The design uses phase-modulated optical pulses at the inputs of the WSS; this has the advantage that the optical modulators are only sampled by the optical pulses once per data-symbol, so that the transition times between the data symbols are irrelevant to the performance of the system, allowing slow optical modulators to be used. Furthermore, each input of the WSS can be assigned to any combination of output subcarrier frequencies, including frequencies unrelated to the modal frequencies of the comb source. This is especially useful for testing in-service ultra-high bandwidth systems by applying additional wavelengths. As an example, we generate a 10.08 Tb/s signal and transmit along 857.4 km of fiber using 252 10-Gbaud subcarriers with a 10% cyclic prefix. We use an optically-banded digital subcarrier demultiplexer to simultaneously detect three subcarriers using a single coherent receiver
Keyword(s) All-optical OFDM
liquid crystal on Silicon (LCoS)
optical communications
optical modulation
Orthorgonal Frequency Division Multiplexing (OFDM)
transmission
wavelength selective switch (WSS)
DOI - identifier 10.1109/JLT.2013.2288638
Copyright notice © 1983-2012 IEEE
ISSN 0733-8724
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