Pilot-free Bayesian Filter for Phase Noise Correction of 64QAM CO-OFDM Superchannel

We experimentally demonstrate the use of a pilot-free phase noise mitigation algorithm for a gain-switched comb-based 480 Gbps 64QAM CO-OFDM superchannel system using weighted-blind estimation and Bayesian filter with 18% potential improve-ment in spectral efficiency.