Optical-stopping effect of As 2 S 8 channel waveguide fabricated by method of photoinduced refractive index changes

The photorefractive phenomenon of As 2 S 8 film is reported in this paper. An ultraviolet irradiation technique is presented and applied successfully to As 2 S 8 channel waveguide preparation on the basis of analyzing these experimental data. This channel waveguide of As 2 S 8 displays good characteristics of a waveguide using a guided mode excitation. It is found that the optical stopping effect of As 2 S 8 channel waveguide has the rotential application owing to its switching function with the photo-optical effect.