Patent ID: 9417502
Filing Date: 2016-08-16
CPC Classification: G02B,G02F,G03H

Claim Text:
1. An acousto-optic device, comprising: a core layer having a periodic photonic crystal structure in which unit cells of predetermined patterns are repeated to generate different refractive index distributions upon application of an acoustic wave; a first clad layer on a first surface of the core layer, the first clad layer having a refractive index that is different from a refractive index of the core layer; and a sound wave generator configured to apply surface acoustic waves (SAW) to at least one of the core layer and the first clad layer, wherein the core layer and the first clad layer to which the SAW are applied includes an acousto-optic material, wherein the core layer has an anisotropic refractive index distribution of a polygonal shape, in which refractive indices toward its vertexes are different from refractive indices toward an intermediate portion of sides of the refractive index distribution.