Optical bistable device based on one-dimensional photonic crystal waveguide

摘要

Optical bistability occurs when the effects of nonlinear behavior of materials cause hysteresis in the transmission and the reflection of a device. An optical bistable device based on one-dimensional photonic crystal waveguide is designed and fabricated. Doped semiconductor CdS_(x)Se_(1 - x) glass, which has large nonlinear refractive index coefficient and fast nonlinear responding time, is used. The threshold light intensity of the optical bistability is 1.65 X 10~(5) W/cm~(2) and the optical switching time is 63 ps.