Patent ID: 6111633
Filing Date: 2000-08-29
Classification: G02F

Abstract:
A polarization independent optical switch, comprising:an input port that receives incoming optical signals;first and second output ports that output optical signals depending on the switching of the optical switch; anda switchable element disposed between the input port and the first and second output ports, the switchable element having liquid crystal molecules and being switchable between a transparent state in which substantially all of the incoming optical signal is transmitted through the switchable element to the first output port and a reflective state in which substantially all of the incoming optical signal is transmitted through the switchable element to the second output port, the molecules being aligned substantially parallel to the path of the incoming optical signal from the input port when the switchable element is in the transparent state and the molecules being aligned substantially perpendicular to the surface of the switchable element when the switchable element is in the reflective state.