Phase Noise Suppression of a 50-Duty-Cycle RZ-DPSK Signal by Using an Attenuation-Imbalanced NOLM

摘要

We use nonlinear optical loop mirror (NOLM) to suppress nonlinear phase noise of 50%-duty-cycle RZ-DPSK signal. Employing NOLM before a 40-km-long transmission link results in 2-dB eye-opening improvement.