Солитоны в расширенном нелинейном уравнении Шредингера с пространственной неоднородностью дисперсии в виде перепада
Purpose: Dynamics of solitons is considered in the framework of the extended nonlinear Schrödinger equation including a pseudo-stimulated-Raman-scattering term, i.e., a spatial-domain counterpart of the stimulated-Raman-scattering term, which is a known ingredient of the temporal-domain nonlinear Schrödinger equation in optics. Also included is inhomogeneity of the spatial second-order dispersion in kink-type form.
Approach: Soliton’s dynamic investigated as analytically as numerically.
Findings: An analytical soliton solution with a permanent shape is found in an approximate form.
Originality: The obtained results is original and can be important for optical fibers application.