Abstract

A simple analytical approach based on a variational formalism is applied to an analysis of the switching dynamics of solitons in fiber nonlinear directional couplers. It is demonstrated that soliton switching may be described by a simplified Hamiltonian model that displays three different regimes of soliton dynamics, depending on the universal parameter, which is the ratio of the squared intensity ν2 to the coupling parameter κ. It follows from the analysis presented that perfect soliton switching may be achieved only for the case ν2/κ < π/2.

© 1993 Optical Society of America

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