LiNbO₃の光誘起屈折率変化と光導波路への応用

抄録

Optically induced refractive index changes in LiNbO₃ and their application to optical waveguides were studied experimentally. The refractive index of the UV irradiated regions was found to decrease while that of the non-irradiated regions increased. This fact suggests the possibility of forming an optical waveguide along the non-irradiated region. Two- and three-dimensional waveguides were successfully formed in LiNbO₃ plates as expected, and an incident He-Ne laser beam (6328 Å) was well confined within the waveguides.