Ultraviolet writing of channel waveguides in proton-exchanged LiNbO_3

摘要

We report on a direct ultraviolet (UV) writing method for the fabrication of channel waveguides at 1.55 μm in LiNbO_3 through UV irradiation of surface and buried planar waveguides made by annealed proton exchange and reverse proton exchange. A systematic study of the guidance properties as a function of the UV writing conditions is presented.