Open AccessEfficient compensation of inter-channel nonlinear effects via digital backward propagation in WDM optical transmission
Author(s) -
Eduardo Mateo,
Fatih Yaman,
Guifang Li
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.015144
Subject(s) - wavelength division multiplexing , compensation (psychology) , cross phase modulation , modulation (music) , quadrature amplitude modulation , optics , phase modulation , transmission (telecommunications) , channel (broadcasting) , nonlinear system , self phase modulation , computer science , electronic engineering , physics , telecommunications , nonlinear optics , bit error rate , phase noise , engineering , acoustics , wavelength , psychology , laser , quantum mechanics , psychoanalysis
An advanced split-step method is employed for the digital backward-propagation (DBP) method using the coupled nonlinear Schrodinger equations for the compensation of inter-channel nonlinearities. Compared to the conventional DBP, cross-phase modulation (XPM) can be efficiently compensated by including the effect of the inter-channel walk-off in the nonlinear step of the split-step method (SSM). While self-phase modulation (SPM) compensation is inefficient in WDM systems, XPM compensation is able to increase the transmission reach by a factor of 2.5 for 16-QAM-modulated signals. The advanced SSM significantly relaxes the step size requirements resulting in a factor of 4 reduction in computational load.