Digital Back Propagation via Sub-Band Processing in Spatial Multiplexing Systems
نویسندگان
چکیده
An advanced digital backward-propagation (DBP) method using a separate-channels approach (SCA) is investigated for the compensation of inter-channel nonlinearities in spatial- and wavelength-multiplexed systems. Compared to conventional DBP, intra-, inter-mode cross-phase modulation can be efficiently compensated by including effect walk-off nonlinear step split-step Fourier method. We found that SCA-DBP relaxes size requirements factor 10, while improving performance 0.8 dB large strong linear coupling. For first time, it shown spatial multiplexed systems transmission improved sub-band processing back propagated channels.
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ژورنال
عنوان ژورنال: Journal of Lightwave Technology
سال: 2021
ISSN: ['0733-8724', '1558-2213']
DOI: https://doi.org/10.1109/jlt.2020.3046076