Patent ID: 6704508
Filing Date: 2004-03-09
Classification: H04J,H04Q

Abstract:
An optical crossconnect selectively connecting at least one input terminal with at least output terminal, said optical crossconnect comprising:an optical switch connecting at least one input port connected to said at least one input terminal with at least one output port connected to said at least one output terminal; at least one supervisory light generating circuit for sending a supervisory light from each of said at least one output port to said optical switch; and at least one supervisory light receiving, circuit for receiving the supervisory light output from said at least one input port, wherein each of said at least one supervisory light generating circuit has an optical reflector that reflects a part of an optical signal output from each of said at least one output port to supply the reflected optical signal to said at least one output port, and wherein a reflectivity of said optical reflector varies with said at least one output port.