CHARACTERISTIC OF SURFACE WAVES IN NONLINEAR LEFT HANDED—PHOTOSENSITIVE SEMICONDUCTOR WAVEGUIDE STRUCTURE

Abstract

The nonlinear electromagnetic surface waves in waveguide structure which contains photosensitive semiconductor layer and left-handed material (LHM) layer have been studied. The effects of light intensity and the LHM on the dispersion of electromagnetic surface waves have been investigated. It has been noticed that, as a result of the foundation of LHM layer in the structure, both forward and backward electromagnetic surface waves exist in the waveguide. It has also been shown that the photosensitive semiconductor layer controls the propagation characteristics of the electromagnetic surface waves. The power flow of the nonlinear surface waves has also been examined. It has been found that the majority of the electromagnetic surface waves propagate in the forward direction.