Method and System for Optical Impairment Mitigation for High-Speed Optical Communication Systems

摘要

A method and system for simultaneous mitigation of optical impairment from both equalizer-phase noise interaction (EPNI) and fiber nonlinear effects (FNE) is disclosed. In one embodiment, the method is directed to simultaneous mitigation of optical impairment from both equalizer-phase noise interaction (EPNI) and fiber nonlinear effects (FNE) using a fast-adaptive multi-tap digital filter.

主权项

1. A method, comprising:
dividing a frequency recovered signal into a plurality of blocks; for each respective block of the plurality of blocks:
estimating a carrier phase for the respective block;determining values of the frequency recovered signal based on the carrier phase estimated for the respective block;estimating coefficients using the values of the frequency recovered signal as a reference signal; andperforming a phase recovery on the frequency recovered signal for the respective block using a filter with the coefficients to generate a phase recovered signal.