Soliton Mobility in Nonlinear Lattices

Abstract

We describe analytically and numerically dynamics of composite solitons consisting of nonlinearly coupled periodic lattice and localized components in self-focusing and self-defocusing nonlinear media, and identify the fundamental effects of gap merging and lattice phase modulation on the soliton motion. Our results can be applied to the problems of interaction of laser beams in nonlinear optical crystals and cross-phase-modulation of optical pulses in fibers. Show more