Patent ID: 7557980
Filing Date: 2009-07-07
Classification: G02F

Abstract:
1. An optical path switching device, comprising: an input port, for receiving an external input light source; at least one reflective element, in a transmissive state initially, and allowing the input light source to transmit when receive the input light source; an electric field driver, applying an electric field on at least one of the reflective elements, such that the at least one reflective element applied with electric field transits from the transmissive state to a reflective state, and reflects the input light source when receive the input light source; and more than one output port, for receiving and then outputting the reflected light source wherein the reflective elements are a semiconductor glass ceramic film having an electro-optic material coated on one side, and the input light source shines on the semiconductor glass ceramic film from one side not coated with the electro-optic material.