Lithium niobate: electro-optic guided-wave optical switch

This report reviews optical switching technology using electro optic material. Firstly, guided wave optical switch using single routing stage and then deices implemented by connecting multiple ranks of switching elements are described. The number of modes used in operating and the device structure can classify switching elements. Representative switching network architectures constructed by connecting switching elements are shown. Some device demonstrations using lithium niobate and other materials such as compound semiconductor are introduced.

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