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Narrow ridge waveguides with~ 2- width have been fabricated in Ti-diffusedLiNbO_3by ion-bombardment-enhanced etching and the intensity modulation by switching the waveguide from guided mode to radiation mode through electro-optic effect has been demonstrated. The extinction coefficient of-19 dBwas obtained at the applied voltage of±10 V.
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Kawabe et al. (1979) studied this question.
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