Abstract
Based on coupled nonlinear Schrodinger equation (CNLSE) piecewise regular model of few-mode long-haul fiber optic transmission link with DWDM and Erbium amplifiers is considered. The few-mode fiber optic transmission link model takes into account the loss, dispersion, differential mode delay, nonlinearity and non-regularity. Based on mode coupling theory and Gaussian approximation modification of split-step Fourier method for the numerical simulation of the CNLSE is introduced. Examples of simulation of a few-mode long-haul fiber optic transmission link by this method are presented.
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