Abstract
We formed planar waveguides in LiNbO3 and LiTaO3 crystals by megaelectron volt He-ion implantation. The dark modes of both waveguides are measured and their refractive-index profiles are described according to the parameterized index profile reconstruction method. The extraordinary indices of both ion-implanted waveguides exhibit quite different profiles. We compare the thermal stability of barriers in ion-implanted LiNbO3 and LiTaO3 waveguides by annealing at different temperatures. The results show that the barrier in a LiTaO3 planar waveguide has higher thermal stability than that in a LiNbO3 waveguide. The experiments also show that annealing at a temperature higher than 400 °C results in recrystallization of the barrier.
© 1999 Optical Society of America
Full Article | PDF ArticleMore Like This
Fei Lu, Tingting Zhang, Gang Fu, Xuelin Wang, Keming Wang, Dingyu Shen, and Hongji Ma
Opt. Express 13(7) 2256-2262 (2005)
Fei Lu, Ming-Qi Meng, Ke-Ming Wang, Xiang-Dong Liu, Huan-Chu Chen, and Ding-Yu Shen
Opt. Lett. 22(3) 163-165 (1997)
Liang-Ling Wang, Lei Wang, Ke-Ming Wang, Qing-Ming Lu, and Hong-Ji Ma
Opt. Express 17(7) 5069-5074 (2009)