Electronic Compensation Technique to Mitigate Nonlinear Phase Noise

Nonlinear phase noise, often called the Gordon–Mollenauer
effect, can be compensated electronically by subtracting
from the received phase a correction proportional to the received
intensity. The optimal scaling factor is derived analytically and
found to be approximately equal to half of the ratio of mean nonlinear
phase noise and the mean received intensity. Using optimal
compensation, the standard deviation of residual phase noise is
halved, doubling the transmission distance in systems limited by
nonlinear phase noise.