ORCHESTRATION CONTROL PROTOCOL

Efficient spectrum allocation in a multi-node optical network

Wavelength multiplexing communication system and wavelength multiplexing communication method

In-phase to quadrature-phase imbalance in an optical data modulator

Extending the optical spectrum of an optical network

Efficient spectrum allocation in a multi-node optical network

Flexible grid optical spectrum transmitter, receiver, and transceiver

Flexible grid optical spectrum transmitter, receiver, and transceiver

Dynamically switching queueing schemes for network switches

Dynamically switching queueing schemes for network switches

Dynamically switching queueing schemes for network switches

Dynamically switching queueing schemes for network switches

DYNAMICALLY SWITCHING QUEUEING SCHEMES FOR NETWORK SWITCHES

Submarine branching apparatus, optical submarine cable system, and optical communication method

Flexible grid optical spectrum transmitter, receiver, and transceiver

Network node and method

Methods and apparatus for providing configuration discovery using intra-nodal test channel

Method and apparatus for optical node construction using software programmable ROADMs

Datacentre for processing a service

Node device and method for controlling node device

Flexible grid optical spectrum transmitter, receiver, and transceiver

Flexible grid optical spectrum transmitter, receiver, and transceiver

Photonic routing systems and methods computing loop-free topologies

Optical add-drop multiplexer and branching unit

Optical ring network

Apparatuses, systems, methods, and computer program products for add-drop multiplexing

Flexible optical spectrum management systems and methods

Controlling optical signal power levelling in an optical communication network

Telecommunications network node linking a metropolitan area network with at least one access network

Photonic routing systems and methods computing loop-free topologies

Wavelength-division multiplexer (WDM) and de-multiplexer (WDDM)

Symmetric optical multiplexing node

Method for auto-configuration of a wavelength selective switch in an optical network

Directionless optical architecture and highly available network and photonic resilience methods

Optical drop apparatus, optical add apparatus, and optical add/drop apparatus

Bidirectional wavelength cross connect architectures using wavelength routing elements

Fault recovery in branched optical networks

Minimizing bandwidth narrowing penalities in a wavelength selective switch optical network

Method and apparatus for performing an automatic power adjustment for an optical signal

Pluggable route-planning module

Method and apparatus for a reconfigurable optical add/drop module with loop-back functions

Software defined networking photonic routing systems and methods

Transponder Aggregator-based optical loopback in a MD-ROADM

Reachability matrices spanning multiple domains in an optical network

Path computation systems and methods in optical networks

WAVELENGTH MULTI-CASTING METHOD IN MULTI-RING NETWORK, MULTI-RING NETWORK DEVICE, AND MULTI-RING NETWORK NODE

Digital subcarrier cross-connect switching

Meshed protected passive optical access network structure and optical network unit structure therefore

Interferometer configured for signal processing in an interference path

Network element

Wavelength-division multiplexing transmission device

Optical junction nodes for use in data center networks

Optical architecture and channel plan employing multi-fiber configurations for data center network switching

Optical ring network architecture

Technique for blocking of optical channels

MxN wavelength selective switch

Concatenated optical spectrum transmission systems and methods

Reachability matrices spanning multiple domains in an optical network

Photonic routing systems and methods for loop avoidance

Method and System for Realizing Multi-Directional Reconfigurable Optical Add-Drop Multiplexing

Optical signal transmission device, optical signal reception device, wavelength division multiplexing optical communication device, and wavelength path system

Minimizing bandwidth narrowing penalties in a wavelength selective switch optical network

Optical transmission method and apparatus using OFDM

Colorless, directionless, and gridless optical network, node, and method

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

System and method for monitoring a branched optical communication system

Methods for determining energy efficient optical routes

Add and drop circulator

BALANCED BYPASS CIRCULATORS AND FOLDED UNIVERSALLY-BALANCED INTERFEROMETERS

Technology for arranging optical channels in switching optical equipment

Reconfigurable optical add drop multiplexer core device, procedure and system using such device, optical light distributor, and coupling-ratio assigning procedure

METHOD AND DEVICE FOR TUNABLE OPTICAL FILTERING

Method and apparatus for performing an automatic power adjustment for an optical signal

Optical network design apparatus and method

Use of multiple shared wavelength lockers to stabilize transponders in a wavelength division multiplexing (WDM) network

Coherent augmented optical add-drop multiplexer

Data channel organization for a switched arbitrated on-chip optical network

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

Methods and systems to stabilize an optical network against nodal gain changes

Optical OADM transmission system with loopback

Optical add/drop multiplexer

Reconfigurable optical add/drop multiplexer

Hybrid optical add-drop multiplexing network and wavelength allocation for the same

Optical communication systems and methods utilizing a split amplification band and nonlinear compensation

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

Branching configuration including separate branching unit and predetermined wavelength filter unit and system and method including the same

Optical routing device and optical network using same

Methods and apparatus for performing directionless and contentionless wavelength addition and subtraction

Bidirectional wavelength cross connect architectures using wavelength routing elements

Optical relay device and optical relay transmission system

Method for auto-configuration of a wavelength selective switch in an optical network

Method and device for hitless tunable optical filtering

Optical ring network architecture

METHOD AND DEVICE FOR HITLESS TUNABLE OPTICAL FILTERING

Method and device for hitless tunable optical filtering

High-degree reconfigurable optical add-drop multiplexing systems using bi-directional wavelength selective switches

Optical transmission equipment and optical add-drop multiplexer

OPTICAL ADD/DROP MULTIPLEXING SYSTEM, OPTICAL ADD/DROP MULTIPLEXER AND OPTICAL PATHWAY DETOUR PROGRAM

METHOD AND APPARATUS FOR INTERCONNECTING A PLURALITY OF OPTICAL TRANSDUCERS WITH A WAVELENGTH DIVISION MULTIPLEXED OPTICAL SWITCH

Spatial light modulator-based reconfigurable optical add-drop multiplexer and method of adding an optical channel using the same

Hitless MxN wavelength selective switch

Dynamically Reconfiguring An Optical Network Using An Ethernet Switch

Quad-port optical module with pass-through and add/drop configuration

Hardened, wavelength enabled optical capacity

Communications Network

WDM optical transmission system and controlling method thereof

GANGED OPTICAL SWITCH

Optical transport system architecture for remote terminal connectivity

Method and system for tunable optical filtering

Directionless reconfigurable optical add-drop multiplexer systems and methods

Directionless optical architecture and highly available network and photonic resilience methods

Methods and apparatus for constructing large wavelength selective switches using parallelism

Reconfigurable optical add/drop multiplexer and procedure for outputting optical signals from such multiplexer

Methods and apparatus for reconfigurable add drop multiplexers

Optical adding and dropping device and optical transmission apparatus

Wide free-spectral-range, widely tunable and hitless-switchable optical channel add-drop filters

Modular all-optical cross-connect

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

Wavelength-switched optical add-drop multiplexer with wavelength broadcasting capability

Optical add/drop multiplexer

Method and apparatus for transferring WDM signals between different wavelength division multiplexed optical communications systems in an optically transparent manner

Photonic cross-connect

Optical transmission equipment and optical network

Systems and methods for adaptive gain control to compensate OSNR penalty caused by side-lobe of MEMS-based reconfigurable optical add-drop multiplexers

Wavelength division multiplex (WDM) optical demultiplexer

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

Signal distribution module for a directionless reconfigurable optical add/drop multiplexer

Optical bypass method and architecture

Systems and methods for providing a three-port reconfigurable optical add-drop multiplexer with an improved edge profile and add/drop flexibility

Modular WSS-based communications system with colorless add/drop interfaces

Method and device for tunable optical filtering

Method, Apparatus And System For Optical Channel Group Shared Protection

Systems and methods for a multiple-input, multiple-output controller in a reconfigurable optical network

Optical ring network architecture

Reconfigurable optical add drop multiplexer core device, procedure and system using such device, optical light distributor, and coupling-ratio assigning procedure

Centralized resource management in wavelength selective switch based wavelength cross connect systems

Method and system for hitless tunable optical processing

Methods and systems to stabilize an optical network against nodal gain changes

Circuit for transmitting signals in a network node, particularly for a channel card for an optical wavelength division multiplex (WDM) signal trasmitting device

Systems and methods for side-lobe compensation in reconfigurable optical add-drop multiplexers

Optical line terminal arrangement, apparatus and methods

COLORLESS OPTICAL DEMODULATOR FOR DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING DWDM SYSTEMS

Optical transmission apparatus with optical amplifiers

System and method for a channel guard in a reconfigurable optical add-drop multiplexer

MULTI-DEGREE OPTICAL NODE ARCHITECTURES

Bidirectional wavelength cross connect architectures using wavelength routing elements

Modular all-optical cross-connect

OPTICAL NETWORK NODE DEVICE

Multicast transmissions in optical burst transport

Optical burst transport using an electro-optic switch

Optical node for mesh-type WDM optical network

Method and Apparatus for Scheduling Communication using a Star Switching Fabric

Balanced bypass circulators and folded universally-balanced interferometers

Optical wavelength multiplex transmission apparatus, control method thereof and optical wavelength multiplex transmission system

Multifunctional and reconfigurable optical node and optical network

MULTIFUNCTIONAL AND RECONFIGURABLE OPTICALNODE AND OPTICAL NETWORK

Apparatus for managing an optical signal

Dispersion compensation method in optical communication system having optical add drop multiplexing capability

Optical transmission equipment and optical add-drop multiplexer

DWDM transport of CATV and digital signals over optical fiber in low-dispersion spectral regions

Upgradeable optical hub and hub upgrade

Network managing apparatus, optical add/drop multiplexer, and network managing method

Polarization scrambler, optical add/drop multiplexer, optical route switching apparatus and wavelength division multiplexing optical transmission system

Flexible open ring optical network and method

Flexible open ring optical network and method

Optical circuit structure for realizing a higher-order node in an optical transmission network

Method and device for implementing Och-Spring in wavelength division multiplexing systems

Optical add/drop device

Transparent optical switch

Optical transmission apparatus, optical transmission system, and optical transmission control method

Flexible node architecture with full protection

Optical multiple transmission method, optical network and optical transmission apparatus

Dynamic blocking of token-controlled data transmissions in communication networks

Optical circuit and linear system dedicated node apparatus, linear system WDM network, and tree system WDM network using such

Integrateable optical interleaver and de-interleaver

Bidirectional wavelength cross connect architectures using wavelength routing elements

Optical logic gate based optical router

Optical add/drop multiplexers

Method and apparatus for scheduling communication using a star switching fabric

Optical switch router

Reconfigurable multichannel (WDM) optical ring network with optical shared protection

Optical transmitter

Optical bypass method and architecture

Optical double sideband modulation technique with increased spectral efficiency

Wavelength-selective routing using an optical add/drop architecture

Drop-and-continue device

Wavelength division multiplexing transmission apparatus using a multiple wavelength light source

Method and system for time-sharing transmission frequencies in an optical network

Optical add-drop multiplexer, and optical network equipment using the same

Method for optimizing enhanced DWDM networks

Arrangement for avoiding node isolation in all-optical communication networks

Wavelength selective switch

System and method for conserving resources in an optical storage area network

Method for pre-emphasis of optical signals in a transmission system comprising add-drop-modules

Method and system for utilizing virtual local access network addressing in optical networks

System and method for re-using wavelengths in an optical network

Method and apparatus for protecting optical signals within a wavelength division multiplexed environment

Optical interface devices for optical communications

Optical add/drop multiplexer

Optical network and optical add/drop apparatus

Optical demultiplexing method and optical multiplexing method, and optical transmission apparatus using same

Method and system for a data centric architecture in an optical network

Optical communication apparatus, optical communication system and method for transmitting optical signal

System and method for modularly scalable architecture for optical networks

Optical add/drop multiplexer

Method for providing high connectivity communications over a packet-switched optical ring network using composite packets

Transparent optical switch

Bi-directional optical add-drop multiplexer

Optical add/drop multiplexer

Modular wavelength selective switch

Hybrid optical ring network

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

Lightwave circuit device

Hitless switch for high-density integrated optics

Multi-band architecture for DWDM rings

Optical bypass method and architecture

Four-port wavelength-selective crossbar switches (4WCS) using reciprocal WDM mux-demux and optical circulator combination

Optical transmission apparatus and optical transmission system

System and method for communicating traffic between optical rings

Optical network with selective mode switching

Single-level no-crossing microelectromechanical hitless switch for high density integrated optics

Tuneable filter arrangement

Optical frequency division multiplexing network

Transparent optical switch

Hitless variable-reflective tunable optical filter

Reconfigurable optical node with distributed spectral filtering

Protected bidirectional WDM network

Undersea branching unit for an undersea optical transmission system

Optical add-filtering switching device

Variable-bandwidth multi-granularity optical add/drop network

Integrateable optical interleaver and de-interleaver

Bidirectional multichannel optical telecommunication system

Branching unit with full or partial broadcast of wavelengths

Switching media converter and ring type wavelength division multiplexing passive optical network system using the same

Optical network with sub-band rejection and bypass

Optical device with tunable coherent receiver

Transparent optical switch

Reducing interference from channel holders in an optical link