Realization of numerical models for nonlinear impulse interactions in soliton communication lines

We consider two methods for analyzing solitons propagation in dispersion-managed communication lines described by nonlinear differential equation. The first method is a split-step Fourier method (SSFM). The second one is the modification of Runge-Kutta-Felberg method (RKF). The obtained results show that SSFM and RKF is a perspective method for a numerical simulation and optimization of high-speed long-distance soliton transmission links.