Non-linear distortion compensator, method of compensating non-linear distortion, and optical receiver

摘要

A non-linear distortion compensator includes: a non-linear distortion calculator (62) that calculates non-linear distortion occurred in a received optical signal based on signal information after recovery of a carrier wave in a carrier wave phase recovery (44) which recovers a phase of the carrier wave of the received optical signal; and a non-linear compensator (63) that compensates the non-linear distortion of the received optical signal based on the non-linear distortion obtained by the non-linear distortion calculator (62).