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We demonstrate the possibility of controlling, practically independently, the form and indices of proton-exchanged lithium niobate guides by means of guide annealing and proton exchange in lithium-rich solutions. Experimental results are presented that indicate how one can realize specific guide designs

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We report the realization, in titanium-diffused lithium niobate, of an integrated optical switch/modulator consisting of an active directional coupler with a novel electrode configuration. Efficient switching is observed with 6 V applied.

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