Proposals for Fabrication of Long-Period Grating in LiNbO3 Strip Waveguides  

作　　者：张德龙 杨庆忠 潘裕斌 

机构地区：[1]School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072 [2]Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong

出　　处：《Chinese Physics Letters》2008年第8期2904-2907,共4页中国物理快报（英文版）

摘　　要：The structure of a strip LiNbO3 waveguide clad with a planar LiNbOa waveguide is proposed to fabricate a long-period waveguide grating （LPWG）. It is shown theoretically that an LPWG device based on such a special LiNbOa waveguide structure is of the merit of thermal stability. The methods for fabrication of planar waveguide, channel waveguide and grating are suggested and discussed. Detailed design consideration is exemplified based on a soft-proton-exchange planar waveguide clad Ti-diffused LiNbOa （Z-cut） strip waveguide.The structure of a strip LiNbO3 waveguide clad with a planar LiNbOa waveguide is proposed to fabricate a long-period waveguide grating （LPWG）. It is shown theoretically that an LPWG device based on such a special LiNbOa waveguide structure is of the merit of thermal stability. The methods for fabrication of planar waveguide, channel waveguide and grating are suggested and discussed. Detailed design consideration is exemplified based on a soft-proton-exchange planar waveguide clad Ti-diffused LiNbOa （Z-cut） strip waveguide.

关 键 词：VAPOR TRANSPORT EQUILIBRATION FIELD DISTRIBUTION LITHIUM-NIOBATE TEMPERATURE WAVELENGTH 

分 类 号：O43[机械工程—光学工程]