Optical signal converter, optical encoder, optical decoder,...

Optical signal generator with stabilized carrier frequency...

Optical signal multiplexing device and optical signal...

Optical signal repeater and output level control method used...

Optical signal transmission device

Optical signal transmission system, optical signal...

Optical source generator for wavelength division...

Optical source generator for wavelength division...

Optical subscriber line terminal unit and a state transition...

Optical swapping of digitally-encoded optical labels

Optical swapping of digitally-encoded optical labels

Optical switch

Optical switch

Optical switch and method for controlling optical path thereof

Optical switch and networking method

Optical switch and optical crossconnect apparatus

Optical switch and optical waveform monitoring device...

Optical switch controller for fair and effective lightpath...

Optical switch device and optical switching method

Optical switch device, and optical reception device and...