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.
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