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A time domain simulation algorithm for the investigation of propagation properties of nonlinear Surface-PlasmonPolaritons (SPP) mode through gallium lanthanum sulphide (GLS) layer in Ag-GLS-Ag waveguide is presented. GLS, a semiconducting chalcogenide glass is known as ultrafast nonlinear device due to their high material non-linearity with strong confinement and dispersion. The time domain simulation algorithm is developed using the Finite Difference Time Domain (FDTD) method. The frequency-dependent dispersion relations as well as third-order non-linearity of GLS glass are modeled using the general polarization algorithm incorporated in the auxiliary differential equation (ADE) technique considering the Kerr nonlinear effect. The dynamics of the whole system is simulated and the effect on SPP propagation is also studied. General Terms Finite Difference Time Domain (FDTD), Auxiliary differential equation (ADE), Kerr nonlinear effect.

Plasmon Enhanced Symmetric Mode Generation in Metal-Insulator-Metal Structure with Kerr Nonlinear Effect