Complex studies of proton exchange doping of LiNbO3 and LiTaO3 single crystals are carried out to investigate the regularities and specific features of structural changes and optical parameters of waveguiding layers. In fact, depending on doping melt type and crystalline cut H: LiNbO3 waveguides can involve two to six and H: LiTaO3 up to three layers with different properties. A qualitative description of the proton exchange mechanism is suggested.
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Ganshin et al. (1988) studied this question.
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