Simulation of Envelope Soliton Scattering in Discontinuous Media

Scattering of the nonlinear Schrodinger (NLS) solitons in discontinuous media is studied numerically. As a physical model, one-dimensional anharmonic lattice which has a discontinuity in its mass distribution, is analized. After the collision of the incident NLS soliton against the mass interface, we detect the amplitude of the reflected and transmitted solitons. They coincide very well with those of the theoretcal ones (T. Iizuka and M. Wadati, J. Phys. Soc. Jpn. 61 (1992) 3077), which is based on the inverse scattering method.