Investigation of pair optical soliton propagation in dispersion managed fiber link with two numerical methods

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