Patent ID: 6879745

Claim:
An optical switch device comprising: an optical switch having a moveable section for switching; a monitor section that monitors emitted light from said optical switch; and an operation control section for adjusting a control condition of switching of said optical switch by controlling said moveable section for switching in response to a monitoring signal from said monitor section; wherein said moveable section for switching comprises optical signal introduction means that inputs an optical signal to said optical switch; said monitor section comprises optical signal output means comprising an optical signal distribution section, and a monitor; said optical signal distribution section distributes and outputs said optical signal output from said optical switch to outside said monitor and the optical switch device; wherein said optical signal introduction means comprises a monitoring signal output source and a signal synthesizing section; said signal synthesizing section inputs said input optical signal and monitoring signal output from said monitoring signal output source to said optical switch after converting these into a single synthesized signal; and said optical signal distribution section comprises a filter that extracts only said optical signal from said synthesized signal output from said optical switch and outputs said optical signal to outside the optical switch device.