Stable propagation of ultrashort optical pulses in modified higher-order nonlinear Schroedinger equation

Abstract

Stable propagation of single ultrashort (subpicosecond or femtosecond) optical pulses and pulse trains is obtained in numerical solutions of a higher-order nonlinear Schroedinger equation with bandwidth limited amplification and nonlinear gain. It is shown that stable single pulse propagation can be achieved for a broad class of pulses with different initial shapes, and that pulse trains can propagate stably without interaction under certain conditions.