We propose a technique to electronically postcompensate fiber nonlinearity in ⩾40 Gbit∕s long-haul WDM transmission systems. We have analyzed this technique for return-to-zero and carrier-suppressed return-to-zero modulation formats using two different dispersion maps. Our analysis shows that the proposed technique can increase the overall system margin by more than 1.0 dB in 40 Gbit∕s long-haul WDM transmission systems.
© 2010 Optical Society of America
Original Manuscript: January 19, 2010
Revised Manuscript: May 18, 2010
Manuscript Accepted: May 19, 2010
Published: June 30, 2010
Nisar Ahmed, M. I. Hayee, and Q. Zhang, "Electronic Postcompensation of Fiber Nonlinearity for 40 Gbit∕s WDM Systems," J. Opt. Commun. Netw. 2, 456-462 (2010)