Generation of spatial solitons using non-linear guided modes

We investigate how two-dimensional spatial optical solitons can be generate d in a nonlinear Kerr medium using the non-linear guided modes of a weakly- guiding slab waveguide with a linear core and a non-linear cladding as the source of excitation. Symmetric, antisymmetric and asymmetric non-linear mo des are considered, from which we determine the parameters of single solito ns, oscillating two-soliton bound states, and two repelling solitons, respe ctively. Both the beam propagation method and inverse scattering transform are used.