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Title: Characterization of proton-exchanged optical waveguides in ZnO:LiNbO3
Authors: Hou, W.X.
Chong, T.C. 
Issue Date: 1995
Citation: Hou, W.X.,Chong, T.C. (1995). Characterization of proton-exchanged optical waveguides in ZnO:LiNbO3. Ferroelectrics, Letters Section 20 (3-4) : 119-125. ScholarBank@NUS Repository.
Abstract: We report the first demonstration of proton-exchanged optical planar waveguides in x-cut and z-cut LiNbO3 doped with 6 mol% ZnO using adipic acid as proton source. These waveguides exhibit a graded index profile which can be modeled by a linear step function with a surface index increase of 0.135 and 0.14 for x-cut and z-cut waveguides, respectively. The diffusion constant D0 and the activation energy Q are characterized optically to be 1.64×109 μm2/h and 88.8 KJ/mol for x-cut waveguides, and 1.478×109 μm2/h and 91.25KJ/mol for z-cut waveguides, respectively. The diffusion rate along the z-axis is slower than that along the x-axis, whereas the surface index increase on z-cut waveguides is larger than that on x-cut waveguides.
Source Title: Ferroelectrics, Letters Section
ISSN: 07315171
Appears in Collections:Staff Publications

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