Optical transmission system, monitoring method therefor,...

Optical transmission systems and optical receivers and...

Optical transmission systems and optical receivers and...

Optical transmission systems including error correction and...

Optical transmitter power setting using feedback

Optical transmitter-receiver

Optical transponder and method for detecting and treating...

Optical transponder with add/drop operation function of...

Optical waveform for use in a DWDM optical network and...

Optical waveform for use in a DWDM optical network and...

Optical waveform measuring apparatus and optical waveform...

Optical wavelength division multiplex signal monitoring...

Optical WDM transmission system

Optical WDM transmission system

Optical, network, node apparatus and method for recovery...

Optoelectronic marker for determining ownership of fiber...

Optoelectronic marker for determining ownership of fiber...

Optoelectronic transceiver with digital diagnostics

OSNR measuring apparatus and OSNR measuring method

OSNR monitoring method and apparatus for the optical networks