Transmission system with cross-phase and/or self-phase modulation compensation

摘要

In a WDM transmission system carrying amplitude modulated traffic in which significant cross-phase modulation occurs, each of the individual channels is pre-chirped at the transmitter with replicas, or low-pass filtered replicas of the amplitude modulation applied to each of the other channels. Prechirping of each individual channel with a replica of the amplitude modulation applied to that channel may be used, additionally or alternatively, in order to provide compensation for self-phase modulation.