Mitigation of inter-channel nonlinear interference in WDM systems
  We demonstrate mitigation of inter-channel nonlinear interference noise (NLIN) in WDM systems for several amplification schemes. Using a practical decision directed recursive least-squares algorithm, we take advantage of the temporal correlations of NLIN to achieve a notable improvement in system performance. 
Ronen Dar, Omri Geller, Meir Feder, Antonio Mecozzi, and Mark Shtaif
physics.optics