Proposals for Fabrication of Long-Period Grating in LiNbO3 Strip Waveguides
ZHANG De-Long1,2, YANG Qing-Zhong1, E. Y. B. Pun2
1School of Precision Instruments and Opto-electronicsEngineering, Tianjin University, Tianjin 300072
$^2$Department of Electronic Engineering, City University of HongKong, 83 Tat Chee Avenue, Kowloon, Hong Kong
Proposals for Fabrication of Long-Period Grating in LiNbO3 Strip Waveguides
ZHANG De-Long1,2, YANG Qing-Zhong1, E. Y. B. Pun2
The structure of a strip LiNbO3 waveguide clad with a planar LiNbO3 waveguide is proposed to fabricate a long-period waveguide grating (LPWG). It is shown theoretically that an LPWG device based on such a special LiNbO3 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 LiNbO3 (Z-cut) strip waveguide.
摘要The structure of a strip LiNbO3 waveguide clad with a planar LiNbO3 waveguide is proposed to fabricate a long-period waveguide grating (LPWG). It is shown theoretically that an LPWG device based on such a special LiNbO3 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 LiNbO3 (Z-cut) strip waveguide.
ZHANG De-Long;YANG Qing-Zhong;E. Y. B. Pun. Proposals for Fabrication of Long-Period Grating in LiNbO3 Strip Waveguides[J]. 中国物理快报, 2008, 25(8): 2904-2907.
ZHANG De-Long, YANG Qing-Zhong, E. Y. B. Pun. Proposals for Fabrication of Long-Period Grating in LiNbO3 Strip Waveguides. Chin. Phys. Lett., 2008, 25(8): 2904-2907.
2008, Vol. 25 
