Mode-Division Multiplexing over 96 Km of Few-Mode Fiber using Coherent 6x6 MIMO Processing
We report simultaneous transmission of six spatial and polarization modes, each carrying 40 Gb/s quadrature-phase-shift-keyed channels over 96 km of a low-differential group delay few-mode fiber. The channels are successfully recovered by offline DSP based on coherent detection and multiple-input multiple-output processing. A penalty of < 1.2 dB is achieved by using 6x 6 feed-forward equalizers with 120 taps each. The 6x6 impulse-response matrix fully characterizing the few-mode fiber is presented, revealing the coupling characteristics between the modes. The results are obtained using mode multiplexers based on phase plates with a mode selectivity of > 28 dB.
R. Ryf et al., "Mode-Division Multiplexing over 96 Km of Few-Mode Fiber using Coherent 6x6 MIMO Processing," Journal of Lightwave Technology, vol. 30, no. 4, pp. 521-531, Institute of Electrical and Electronics Engineers (IEEE), Feb 2012.
The definitive version is available at https://doi.org/10.1109/JLT.2011.2174336
Electrical and Computer Engineering
Keywords and Phrases
Digital signal processing (DSP); MIMO; Optical fibers
International Standard Serial Number (ISSN)
Article - Journal
© 2012 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
01 Feb 2012