Characterization of Annealed, Proton Exchange Optical Waveguides in Y-cut MgO∶LiNbO3 Crystal

作     者：CAO Xia XIA Yuxing YANG Yi WANG Pinghe CHEN Xianfeng (Department of Applied Physics, Shanghai Jiao Tong University, Shanghai 200030, China) 

作者机构：上海交通大学 上海 

出 版 物：《Chinese Journal of Lasers》 (中国激光(英文版))

年 卷 期：2000年第9卷第3期

页      面：47-51页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

主　　题：proton exchange MgO∶LiNbO 3 crystal optical waveguides refractive index profile 

摘      要：It is reported the results of a systematic study on planar w aveguides fabricated in Y-cut MgO∶LiNbO 3 crystal. The index profile of the as-exchanged waveguide can be modeled as a step-like one. It is deduced the diffusion coefficient and the activation energy for the proton exchange process. The surface index increases Δn e of around 0.127 after proton exchange can be reduced by post thermal annealing. The effects of the annealing on the index profile and guide depth were found not as fast as it does on a pure LiNbO 3 crystal.