Efficient Fiber Nonlinearity Mitigation in 50-GHz-DWDM Transmission of 256-Gb/s PDM-16QAM Signals by Folded Digital-Back-Propagation and Channelized FBG-DCMs

We demonstrate DSP-efficient mitigation of intrachannel and interchannel nonlinear impairments in dispersion-managed DWDM transmission by using channelized-FBG-DCMs and dispersion-folded digital-back-propagation, showing similar nonlinearity tolerance as dispersionunmanaged transmission for 256-Gb/s PDM-16QAM signals over 12x100-km SSMF spans.