Optical transport network protection architecture, nodes and method

Fast connection turn-up with path-based dummy lights

PROCEDURES, APPARATUSES, SYSTEMS, AND COMPUTER PROGRAMS FOR PROVIDING OPTICAL NETWORK CHANNEL PROTECTION

Method and system for establishing at least two bidirectional communication links using coherent detection

Optical switch, an optical switching apparatus, an optical communications network node and an optical communications network

PROCEDURES, APPARATUSES, SYSTEMS, AND COMPUTER PROGRAMS FOR PROVIDING OPTICAL NETWORK CHANNEL PROTECTION

Communication method applied to multi-wavelength passive optical network, apparatus, and system

Reconfigurable add/drop multiplexing in optical networks

Optical switch, an optical switching apparatus, an optical communications network node and an optical communications network

Optical communication system and optical communication abnormality-recovery method

Optical cross-bar switch that provides stable, low-loss, fiber-optic path protection

Apparatus and methods for enabling recovery from failures in optical networks

Fiber optic circuit breaker

METHOD AND APPARATUS FOR OPTICAL SIGNAL CONTROL USING FILTER IN MULTICASTING RING NETWORK NODE AND PROTECTION SWITCHING IN OPTICAL MULTIPLEX SECTION

Procedures, apparatuses, systems, and computer programs for providing optical network channel protection

Using floating transport card for best effort traffic

Defect propagation of multiple signals of various rates when mapped into a combined signal

Protection in metro optical networks

Directionless optical architecture and highly available network and photonic resilience methods

Apparatus and method for an optical network

Method, Apparatus, and System for Disaster Recovery of Optical Communication System

SYSTEM FOR INTERCONNECTING NODES ATTACHED TO A PASSIVE OPTICAL NETWORK

Protected optical single-fiber WDM system

Apparatus and methods for enabling recovery from failures in optical networks

Optical transmission system, receiving-end device, and optical transmission method

Optical switching architectures for nodes in WDM mesh and ring networks

2-step-optimization procedure for routing and wavelength assignment with combined dedicated shared protections in multi-cable multi-fiber optical WDM networks

Joint optimization procedure for routing and wavelength assignment with combined dedicated shared protections in multi-cable multi-fiber optical WDM networks

Signaling protocol for multi-domain optical networks

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

Optical transmission system and noise suppression method

Protection system, method and apparatus for optical network

Optical line termination node and passive optical network

Optical amplification apparatus, method for controlling same, optical receiver station, and optical transmission system

Resource utilization method and system

OPTICAL RING NETWORKS HAVING NODE-TO-NODE OPTICAL COMMUNICATION CHANNELS FOR CARRYING DATA TRAFFIC

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

Network protection method and device

Packet transmission system and fault recovery method

OPTICAL TRANSMISSION SYSTEM

Optical switching architectures for nodes in WDM mesh and ring networks

Method of switching optical path, and apparatus thereof

METHODS AND DEVICES OF QUANTUM ENCODING ON DWDM (ROADM) NETWORK AND FIBER OPTIC LINKS .

Method and system for shared protection in wavelength division multiplexing loop network

Optical transmission systems, devices, and methods

Method and device for the 1+1 protection of an optical transmission path

MULTIPLE REDUNDANCY SCHEMES IN AN OPTICAL NETWORK

Method for the protection of a passive optical transmission network as well as a passive optical transmission network with a corresponding protection mechanism

Centrally Managed, Self-Survivable Wavelength Division Multiplexed Passive Optical Network

Optical communication system, optical receiving terminal, and optical signal fault detection method

Hardened, wavelength enabled optical capacity

COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

Aggregating Optical Network Device

Directionless optical architecture and highly available network and photonic resilience methods

Fast fault notifications of an optical network

METHOD, SYSTEM AND APPARATUS FOR PROTECTING WAVELENGTH DIVISION MULTIPLEX TRANSMISSION

DESIGN METHOD FOR WDM OPTICAL NETWORKS INCLUDING ALTERNATE ROUTES FOR FAULT RECOVERY

LIGHT TRANSMISSION DEVICE AND METHOD OF SETTING LIGHT INPUT BREAK DETECTION THRESHOLD VALUE

1+1 protection method of services in OBS networks, intersection node apparatus and service protection system

Orthogonal frequency division multiple access based optical ring network

Multiple redundancy schemes in an optical network

Optical ring networks having node-to-node optical communication channels for carrying data traffic

Multi-ring network operating method and system

Optical network system

Method for protecting cross-ring service in optical network

Video transmission system of a ring network

System and method for establishing protected connections

Optical transmission device

Optical network design method and storage medium for storing design program

Method and apparatus for photonic resiliency of a packet switched network

Method and apparatus for providing integrated symmetric and asymmetric network capacity on an optical network

Communication apparatus, communication line diagnosis method, program and recording medium

Node for an Optical Communication Network

PATH SETTING METHOD, NODE DEVICE, AND MONITORING/CONTROL DEVICE

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

Method and system for hybrid protection in optical networks

Optical switching architectures for nodes in WDM mesh and ring networks

Optical transmission systems including optical protection systems, apparatuses and methods

Interconnections and protection between optical communications networks

Optical add/drop device

Method of implementing association in automatic switched optical network (ASON)

Optical receiving apparatus and dispersion compensating method therein

Method and arrangement for the transmission of working signals and protection signals via optical data networks

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

Fully protected broadcast and select all optical network

Optical double sideband modulation technique with increased spectral efficiency

(D) WDM communications network using back-up light sources

Method of allocating bandwidth in an optical network

Wavelength division multiplexing transmission system, wavelength division multiplexing transmission apparatus and method for controlling wavelength division multiplexing transmission apparatus

Optical apparatus and optical cross connect apparatus

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

System and method for operating a wideband return channel in a bi-directional optical communication system

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

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

Wavelength-division multiplexing-passive optical network

Optical node and optical add/drop multiplexer

Path protection method for a WDM network and according node

Optical wavelength division multiplexing access system

WDM layer-based optical chanel protecting device and method thereof

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

Design method for WDM optical networks including alternate routes for fault recovery

Dual homing for DWDM networks in fiber rings

Method for WDM optical networks including alternate routes for fault recovery

WDM optical transmission equipment with redundant configuration, and wavelength control method of light output in standby system

System and method for setting a tunable filter in an optical network

Hybrid optical ring network

Self-healing hierarchical network management system, and methods and apparatus therefor

Relay transmission apparatus

Optical cross-connect device and method of optical communication control

Optical protection apparatus

System and method for communicating traffic between optical rings

Photonic data storage network

Fast fault notifications of an optical network

Reroutable protection schemes of an optical network

Method of providing network services

IP packet communication apparatus

Signal transceiving method for use in optical ring network and optical node for the same

System and method for a resilient optical Ethernet networksupporting automatic protection switching

Upgraded flexible open ring optical network and method

System and apparatus for a carrier class WDM PON accommodating multiple services or protocols

Optical ring networks with failure protection mechanisms

Bi-directional wavelength division multiplexing self-healing passive optical network

Wavelength-division multiplexed self-healing passive optical network

Transmission apparatus and path selection method of a transmission apparatus

Optical ring network with optical subnets and method

Protection architecture for photonic switch using tunable optical filter

Ethernet passive optical network ring and its method of authorization and collision detection

Protected bidirectional WDM network

Method for planning or provisioning data transport networks

Error propagation and signal path protection in optical network

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

Optical switching apparatus, optical transmission system and method of setting up for optical signal route

Method and a device for controlling protection or restoration paths in a hybrid optical network

Add/drop module for single fiber wavelength division multiplexing systems

System and method for communicating optical traffic between ring networks

Proactive and reactive automated fault identification and isolation in an optical transport network, and applications thereof

Link discovery, verification, and failure isolation in an optical communication system