Abstract

The large third-order nonlinearity of the nonlinear waveguides have attracted considerable attention because of its interesting new effects, which can be applied to all-optical signal processing, such as self-routing in optical communication networks.¹ Here we present numerical results concerning propagation of Gaussian beams launched into adjoining nonlinear planar waveguides² with the structure of linear and nonlinear waveguides adjoining together, as shown in Fig. 1. The numerical results using the Crank-Nicolson finite-difference scheme show that high-power Gaussian beams incident to the linear waveguide region covert to the exact nonlinear eigenmode, solitary waves.

© 1995 IEEE