Patent ID: 8509576
Filing Date: 2013-08-13
Classification: G02F,H04N,Y10T

Abstract:
1. An optical switch comprising: an electro-optic crystal; and an electrode unit including a plurality of electrodes arranged on the same plane in the electro-optic crystal to extend in parallel to one another, a refractive index of a part of the electro-optic crystal being changed by an electric field generated at the electrode unit, thereby switching transmission and reflection of light incident on the electro-optic crystal, wherein the electro-optic crystal has an entrance surface through which light enters and an exit surface from which light exits, the electrode unit being located between the entrance surface and the exit surface, and an angle θx formed between a longitudinal direction of the electrodes and at least one surface from among the entrance surface and the exit surface is set near an angle that satisfies the following expression (1): (n denotes a refractive index of the electro-optic crystal in a wavelength of light to be modulated).