Patent ID: 7453620
Filing Date: 2008-11-18
Classification: G02F

Abstract:
1. A spatial optical modulation element, comprising: a low refractive index layer disposed between a dielectric and an optical functional material layer made of an optical functional material with a refractive index changeable by light irradiation, the low refractive index layer is made of a transparent material with a refractive index lower than a refractive index of the dielectric, wherein at an interface between the dielectric and the low refractive index layer, reflection of a to-be-modulated light entering through the dielectric is controlled by a modulation drive light, and the control of the reflection of the to-be-modulated light by the modulation drive light is a combination of reflection of the to-be-modulated light and confinement of the to-be-modulated light by a waveguide mode.