Enhanced Analysis for Fiber Nonlinearities

For optical communication links using wavelength-division multiplexing over a long-haul fiber optic backbone, stimulated raman scattering may lead to significant transmission impairment. This paper discusses the enhanced analysis for the SRS induced crosstalk in the optical networks. The expression for Stimulated Raman Scattering induced crosstalk have been observed at different fiber types( as Single Mode Fiber, Dispersion Compensation Fiber, Non Zero Dispersion Fiber and Non Zero Dispersion Shifted Fiber), variation in modulation frequency, transmission length and optical power. It is seen through the below observations that the as the modulation frequency increases the SRS induced crosstalk decreases and lie in the range of (-58 to -70) for single mode fiber at transmission length of 60 km. SRS induced crosstalk increases if the optical is increased and this increase is exponential for above fiber types. Keywords-SMF, DCF, NZDF, NZDSF, modulation frequency, transmission length, optical power.