Abstract
Summary Experimental and theoretical data are presented that relate to strip waveguides obtained by applying a voltage to electrodes deposited on a Ti:LiNbO3 planar waveguide. The dependence of the modal picture on inducing voltage is registrated. Optical Field distributions in depth are calculated approximating the Gaussian index profile by a parabola and an exponent. The overlap between the optical intensity and the electric field is measured for different depth modes and is compared with calculated ones. A possibility of effective amplitude modulation is observed on the base of formations of successive lateral modes. A simple modulator is demonstrated.
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