Abstract
All optical WDM system has the benefit of increased transmission distance and high capacity. The reach of these systems is severely limited by the noise contributed from the combined nonlinear effects inherent in the optical fiber. Of these effects, stimulated Raman scattering (SRS) and four wave mixing (FWM) are the important factors that limit the system capacity and degrade the signal quality. This paper investigates the combined effect of FWM and SRS on the performance of WDM all optical star network. Performance is compared in terms of Q-factor in the presence of (a) thermal, shot, FWM and (b) thermal, shot, FWM and SRS noise. The results are presented in graphical forms for the practical values of parameters.
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