We demonstrate one of the first experiments of optical transmission based on mode-division multiplexing over a few-mode optical fiber. The mode multiplexer and demultiplexer are based on a programmable liquid crystal on silicon panel. Using this system, we transmit two 100 Gb/s polarization division multiplexed quaternary phase-shift keying data streams modulated on two different modes of the prototype few-mode fiber. At the receiver, a set of optical coherent detectors with DSP including multiple-input multiple-output algorithms recover the signal and permit to mitigate the crosstalk stemming from imperfect mode conversion.
© 2011 IEEE
Massimiliano Salsi, Clemens Koebele, Donato Sperti, Patrice Tran, Haik Mardoyan, Patrick Brindel, Sébastien Bigo, Aurélien Boutin, Frédéric Verluise, Pierre Sillard, Marianne Bigot-Astruc, Lionel Provost, and Gabriel Charlet, "Mode-Division Multiplexing of 2 × 100 Gb/s Channels Using an LCOS-Based Spatial Modulator," J. Lightwave Technol. 30, 618-623 (2012)