Patent ID: 8861960

Claim:
A system for the simultaneous compensation of nonlinear cross polarization modulation induced noise and nonlinear cross phase modulation induced noise in a high data rate polarization multiplexed channel due to neighboring channels, comprising: a receiver operable for receiving spectrally separable pilot tones in same states of polarization as polarization channels, down converting associated pilot tone vectors to a baseband, separating the pilot tone vectors with a sufficient bandwidth, down converting subcarrier signal vectors to the baseband, and taking scalar products of the various vectors, a first scalar product and a second scalar product, wherein the first scalar product restores an original first polarization channel launched into a link at a first polarization and the second scalar product restores an original second polarization channel launched into the link at a second polarization; wherein the sufficient bandwidth around a first polarization pilot tone and a second polarization pilot tone is sufficient to simultaneously capture nonlinear cross phase modulation induced polarization variation and nonlinear cross phase modulation induced phase variation for compensation thereof, wherein the sufficient bandwidth is determined by an optimization between the compensation of nonlinear cross polarization modulation induced noise and nonlinear cross phase modulation induced noise and degradation due to amplified spontaneous emission noise as the sufficient bandwidth increases.