Re-configurable optical add-drop multiplexer

Receiver transponder for protected networks

Reconfigurable add/drop for optical fiber communication systems

Reconfigurable modulator-based optical add-and-drop multiplexer

Reconfigurable multi-channel all-optical regenerators

Reconfigurable optical add-drop multiplexer

Reconfigurable thin film based DWDM devices for...

Reduction of polarization-dependent loss from grating used...

Remodulating channel selectors for WDM optical communication...

Saturable light absorber structure and a device...

Scalable optical demultiplexing arrangement for wide band...

Secure analog communication system using time and wavelength...

Selected-wavelength tuning filter and optical add/drop...

Self checking optical add drop multiplexer

Self-adjustable tunable filter

Self-adjusting optical add-drop multiplexer and optical...

Self-adjusting optical add-drop multiplexer and optical...

Setting up a circuit in a network

Signal identification method

Signal transmission method in WDM transmission system, and...