Numerical Simulation of Propagation of a Femtosecond Optical Soliton in a Single-Mode Fiber with Allowance for the Imaginary Part of Raman Response

摘要

We consider the effect of Raman inertial response of a medium on the stability of a firstorder femtosecond soliton. Numerical solution to the high-order nonlinear Schrodinger equation, with the complex Raman term, describing propagation of a femtosecond optical soliton in a single-mode fiber, is obtained. It is shown that a soliton solution of the high-order nonlinear Schrodinger equation exists under certain conditions imposed on the equation coefficients. These conditions lead to limitations on the wavelength, fiber type, and the highest energy. Results of numerical solutions are in agreement with available experimental data.