Numerical modelling for a basic switching unit based on nonlinear plasmonic two mode waveguide

An optically controlled two mode interference coupler based on index-guided multimode plasmonic waveguide is proposed with silicon core and GaAsInP as the cladding on the two sides. Optically controlled switching operation is observed by refractive index modulation of GaAsInP due to launching of optical pulse. The optical pulse-controlled coupling characteristics of the proposed device are studied for nonlinear switching action.