Patent ID: 9052566
Filing Date: 2015-06-09
Classification: G02B,G02F

Abstract:
1. An optical switch, comprising: an optical input-output port that includes three or more ports to which light is input from outside or from which light is output to the outside, the three or more ports being arranged along a predetermined arrangement direction; a spatial optical modulator, that includes a light incident layer, a light reflective layer, and a spatial optical modulation layer disposed between the light incident layer and the light reflective layer, spatially modulates light entering the light incident layer from any port of the optical input-output port, and outputs the light spatially modulated toward any of other ports of the optical input-output port; a light dispersion element, that is disposed between the optical input-output port and the spatial optical modulator, disperses the light input from the optical input-output port in a direction orthogonal to the predetermined arrangement direction; and a condensing lens, that is disposed between the optical input-output port and the spatial optical modulator, optically couples the optical input-output port and the spatial optical modulator, wherein a coordinate axis is set along the predetermined arrangement direction of the optical input-output port and a position of an optical axis of the condensing lens is set as an origin of the coordinate axis; x x