Abstract
The evolution of ASE noise and the generation of nonlinear phase shift are analyzed based on the travelling wave solution of ASE noise and its probability density function by solving the Fokker-Planck equation including dispersion effect. Nonlinear effect has strong impact on ASE noise. After the transmission in non-zero dispersion shift fibers + dispersion compensation fibers, due to the nonlinear effect, ASE noise is enhanced. Detailedly, the real part of ASE decreases but the image part increases greatly compared to that with dispersion effect only. Nonlinear phase shift, related to the image part of ASE noise, occurs in this kind of link. The impact of signal intensity on ASE noise induces fluctuations to the both curves of ASE noise and nonlinear phase shift as functions of time, respectively. Furthermore, it results in the non-Gaussian distribution of ASE noise probability density function (side-bands occurring) and brings more than 1 dB additive BER.
Highlights
The evolution of amplified spontaneous emission (ASE) noise and the generation of nonlinear phase shift are analyzed based on the travelling wave solution of ASE noise and its probability density function by solving the Fokker-Planck equation including dispersion effect
Nonlinear phase noise [1], an additive component of amplified spontaneous emission (ASE) noise induced by the interplay between ASE noise and fiber Kerr nonlinearity, has attracted lots of attention [2] [3] [4] [5] [6]
It is the dominant impairment of differential phase shift keying (DPSK) signals, which successfully suppress the nonlinear fluctuation between signals [7] [8] [9] [10]
Summary
Nonlinear phase noise [1], an additive component of amplified spontaneous emission (ASE) noise induced by the interplay between ASE noise and fiber Kerr nonlinearity, has attracted lots of attention [2] [3] [4] [5] [6]. The dependence between ASE noise in-phase and quadrature components, and their probability density functions impacted by the transmission, are directly derived. This is the base for the practical system bit-error-rate estimation in which ASE noise is impacted by dispersion effect, nonlinear effect and signal formats.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
