Electronic Compensation of Optical Fiber Nonlinearity for Intensity and Phase Modulated WDM Transmission Systems

In this paper, we have proposed a novel technique to electronically post-compensate fiber nonlinearity in 40 Gb/s long-haul WDM transmission systems on which a patent application has recently been filed to USPTO. We have analyzed this technique for both intensity and phase modulated WDM transmission system using two different dispersion maps. Our analysis shows that the proposed technique can increase the overall system margin by 1.5 dB in intensity modulated and 1.0 dB in phase modulated 40 Gb/s long-haul WDM transmission systems.