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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. |
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Cite this article: |
ZHANG De-Long, YANG Qing-Zhong, E. Y. B. Pun 2008 Chin. Phys. Lett. 25 2904-2907 |
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