Nonlinear signal-noise interactions in dispersion-managed links with various modulation formats

Purpose of this paper is to highlight the principles of the nonlinear signal-noise interaction (NSNI) in dispersion-managed long-haul optical links and provide a quantitative understanding of the system parameters for which NSNI sets the nonlinear performance of the most popular intensity and phase modulation formats, namely on-off keying, differential binary and quadrature phase-shift keying and coherent quadrature phase-shift keying. (C) 2009 Elsevier Inc. All rights reserved.