Abstract

A technique for fabricating optical waveguides in a lithium niobate crystal is studied experimentally. We fabricate straight and curved structures of refractive index as the optical waveguides in a volume of the photorefractive crystal by scanning a focused laser beam. The experimental results show that the structure of refractive-index distribution is complex yet imply guiding of light in the part of high refractive index within the fabricated structure.

© 1994 Optical Society of America

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