Abstract
We demonstrate a single-mode waveguide in LiNbO3 by use of both prism and end-face coupling methods. The waveguide is formed by multienergy megaelectron-volt O2+ implantation at room temperature. A bright line is observed only when moderate postimplant annealing was performed. The possible index profile of the waveguide is constructed according to the damage profile of the lattice structure caused by the implantation. Although dark-mode measurement shows that the effective extraordinary index of LiNbO3 is raised in the waveguide layer, results of the analysis indicate that the single guiding mode could be supported by a synergetic effect from both the raised index layer and the low-index barrier. The reduced loss of the waveguide can be attributed to the widened low-index barrier from multienergy implantation.
©2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Fei Lu, Gang Fu, Chuanlei Jia, Keming Wang, Hongji Ma, and Dingyu Shen
Opt. Express 13(23) 9143-9148 (2005)
Fei Lu, Feng Xiang Wang, Wei Li, Jian Hua Zhang, and Ke Ming Wang
Appl. Opt. 38(24) 5122-5126 (1999)
Shao-Mei Zhang, Ke-Ming Wang, Xiangzhi Liu, Zhuanfang Bi, and Xiu-Hong Liu
Opt. Express 18(15) 15609-15617 (2010)