Method for recording information into rewritable thermal...

Method for removing and inserting optical carriers in a WDM opti

Method for setting the local oscillator of an optical superheter

Method for sub-carrier multiplexed optical signal transmission a

Method for synchronizing the phase of optical return-to-zero...

Method for the management of wavelength-division-multiplexed opt

Method for the reduction of noise in a long-distance optical...

Method for the transmission of a low-rate supplementary channel

Method for the transmission of data between two stations by mean

Method for transmission and receipt of coherent light signals

Method for transmitting an additional data signal and a...

Method for transmitting WDM optical signal to be amplified by op

Method for upgrading a communications network

Method of and a device for polarization-independent optical...

Method of and apparatus for data communications between portable

Method of and apparatus for detecting and reporting faults in an

Method of and apparatus for detecting transients in an...

Method of and device for amplifying channels extracted from a wa

Method of and device for controlling the phase of a clock signal

Method of and device for driving optical modulator, and optical