MODAL-ANALYSIS OF NONLINEAR PROPAGATION IN DIELECTRIC SLAB WAVE-GUIDE

In this paper we present a study of nonlinear guided propagation based on the development of the actual electromagnetic field in terms of th e modes of a linear dielectric guide, This approach permits in princip le to consider propagation over finite lengths of waveguide of general nonuniform nonlinearity, with arbitrary excitation at a finite locati on and to retain the second derivative term that is neglected in the u sual Schrodinger equation approximation to the wave equation.