DATA PROCESSING METHOD AND RELATED APPARATUSES

BIDIRECTIONAL FILTER

Bundling capacity changes in channel holder based optical links

Wavelength division multiplexers for space division multiplexing (SDM-WDM devices)

Alien wavelength management

Bidirectional filter

Wavelength switching and configuration method and device for passive optical network

Network node and method

Method and apparatus for enabling a single fiber-working on an optical fiber

Systems and methods for multiplexing and demodulation at high frequencies and increased communication bandwidth

Electronical compensation of an interleaver transfer function for optical multiple carrier transmission

Free space optical communications device

OPTICAL ROUTER

Phase retarder and optical comb filter thereof

Optical router having optical routing nodes of four bi-directional optical switches

Reconfigurable optical switch apparatus

Submarine reconfigurable optical add/drop multiplexer with passive branching unit

Method and device for transmitting an optical digital WDM signal over an optical transmission link or a passive optical network

Transmission device and transmission method

Optical terminating apparatus for optical path network

Wavelength path multiplexing/demultiplexing apparatus and wavelength path multiplexing/demultiplexing method

Apparatus and method for improved distributed compensation of filtering effects mitigation in an optical network

SPECTRALLY EFFICIENT MODULATION FOR AN OPTICAL-TRANSPORT SYSTEM

METHOD AND A NETWORK NODE FOR IMPROVING BANDWIDTH EFFICIENCY IN AN OPTICAL NETWORK

Method for optimizing the capacity of optical communication networks

Method and apparatus for colorless add

MxN wavelength selective switch

METHOD AND APPARATUS FOR TRAFFICKING WAVELENGTHS OF DIFFERENT SPACINGS WITHIN AN OPTICAL NODE

Colorless dense wavelength division multiplexing transmitters

Wavelength division multiplexed optical communication system architectures

Optical network interconnect device

Optical router using interconnected photonic crystal elements with specific lattice-hole geometry

ROADM SYSTEMS AND METHODS OF OPERATION

Wavelength division multiplex terminal with automatic configuration and supervision of switch connections

Optical add/drop multiplexer

Method, and system for a re-configurable optical multiplexer, demultiplexer and optical add-drop multiplexer

Optical interleavers and de-interleavers

Optical signal processing apparatus

METHOD AND DEVICE FOR HITLESS TUNABLE OPTICAL FILTERING

Hitless MxN wavelength selective switch

Optical transmission apparatus

Optical transport system architecture for remote terminal connectivity

Method and system for tunable optical filtering

Methods and apparatus for constructing large wavelength selective switches using parallelism

Methods and apparatus for reconfigurable add drop multiplexers

Optical adding and dropping device and optical transmission apparatus

Methods and apparatus for performing directionless wavelength addition and subtraction within a ROADM based optical node

Optical add/drop multiplexer

Photonic cross-connect

Optical transmission system and optical node

Method, device and system for group optical channel shared protection

Controllable optical add/drop multiplexer

Method and apparatus for hitless routing of optical signals in an optical transport network

Method and System for Communicating Optical Traffic

Optical tunable asymmetric interleaver and upgrade for dense wavelength division multiplexed networks

Integrateable optical interleaver and de-interleaver

Bidirectional add/drop multiplexer

Method and apparatus for dispersion management in optical communication systems

Optical add/drop multiplexer

Bi-directional optical add-drop multiplexer

Transient control in optical transmission systems

Modular wavelength selective switch

Flexible band tunable add/drop multiplexer and modular optical node architecture

Optical add/drop multiplexer having a banded channel configuration

Flexible waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system

Optical add/drop multiplexer having an alternated channel configuration

Wavelength division multiplexing add/drop system employing optical switches and interleavers

Optical wavelength division multiplexed system using wavelength splitters

Method and apparatus for multiplexing in a wireless communication infrastructure

Upgraded flexible open ring optical network and method

Method and apparatus for multiplexing in a wireless communication infrastructure

Bi-directional add/drop node

Optical apparatus for bidirectional optical communication

Protected bidirectional WDM network

Integrateable optical interleaver and de-interleaver

Optical network with sub-band rejection and bypass

DISPERSION-COMPENSATED OPTICAL WAVELENGTH ROUTER AND CASCADED ARCHITECTURES

Optical add-drop apparatus and method

Reducing interference from channel holders in an optical link

Bi-directional compact coarse wavelength division multiplexing having a dispersionless bi-directional tap