Access node for optical networks with variable-access...

Acousto-optical tunable filters cascaded together

Active control loop for power control of optical channel groups

Active optical lattice filters

Add-drop-multiplexer and optical wavelength division...

Add/drop module for single fiber wavelength division...

Add/drop multiplexer for OTN/DWDM rings utilizing a pair of...

Add/drop multiplexing in WDM optical networks

Add/drop node for an optical communications network

Add/drop-drop and continue-module and drop and continue module

All optical chromatic and polarization mode dispersion...

All optical chromatic and polarization mode dispersion...

Apparatus and method for optical add/drop multiplexing

Apparatus and method for stimulated Brillouin scattering...

Apparatus and method for tracking optical wavelength in WDM...

Apparatus and method for transmitting optical signals...

Apparatus for detecting peaks of...

Apparatus for emitting light with controllable degree of...

Apparatus for reshaping optical pulses

Architectural arrangement for bandwidth management in large...