Patent ID: 6463191
Filing Date: 2002-10-08
Classification: G02B,H04J,H04Q

Abstract:
An optical switching device comprising:a first optical switching module including a first light switching section for switching the input of an incoming light or the destination of a received light and a second light switching section to be switched conjointly with said first switching section; a second optical switching module including a third light switching section for switching the input of a coming light or the destination of a received light and a fourth light switching section to be switched conjointly with said third light switching section; an optical star coupler for dividing the received light into a light to be supplied to said first switching section in said first optical switching module and a light to be supplied into said third switching section in said second optical switching module; a first light source for emitting a light to be supplied to said optical star coupler; a first receiver for detecting a light emitted from said first switching section in said first optical switching module and supplying supervised information according to the detected result; and a second receiver for detecting a light emitted from said third switching section in said second optical switching module and supplying supervised information according to the detected result.