Ti扩散LiNbO_3光波导和质子交换光波导路是以各种光器件制作为基础制成的光波导路.不过,在这些光波导路中,特别是在短波长区域,发生折射率随光的入射而变化的光感应折射率变化,这是其实用化的最大障碍.本文测定了上述两个光波导路的光感应折射率变化,并特别就强入射功率下发生光 Ti diffused LiNbO 3 optical waveguides and proton-exchanged optical waveguides are optical waveguides made on the basis of various kinds of optical devices. However, in these optical waveguides, especially in the short wavelength region, the refractive index changes depending on the incidence of light The change of the light-induced refractive index changes, which is the biggest obstacle to its practical use.This paper measured the above two optical waveguide light-induced refractive index changes, and especially with strong incident power light