Method for On-Line Recovery of Parameter Synchronization for Ciphering Applications

Optical access network of wavelength division method and passive optical network using the same

Optical access network of wavelength division method and passive optical network using the same

Countermeasures for idle pattern SRS interference in ethernet optical network systems

Method and system for maximizing wavelength reuse in optically protected WDM networks

Frequency division and/or wavelength division multiplexed recursive fiber optic telemetry scheme for an optical sensor array

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

Optical network system

Transient-based channel growth for optical transmission systems

Optical transmission system including a plurality of optical transmission devices

Method for network commissioning using amplified spontaneous emission (ASE) sources

Route determination method used in optical signal transmission system

Optical transmission equipment preventing malfunction in recovery from fault

Optical cross connect apparatus and optical transmission system

Shared optical performance monitoring

Optical transmission system with two-mode ring protection mechanism for prioritized client signals

Trail engineering in agile photonic networks

Optical access network using wavelength-locked WDM optical source injected by incoherent light

Protocol and line-rate transparent WDM passive optical network

Method and system for wavelength division multiplexed optical signal transmission and optical repeater

Hybrid optical ring network

Wavelength-division-multiplexing passive optical network utilizing fiber fault detectors and/or wavelength tracking components

Optical switching apparatus and optical communication network system

Optical add/drop interconnect bus for multiprocessor architecture

Self-monitoring passive optical network

Multi-band architecture for DWDM rings

System and method for providing packetized video over an optical network

Multiple-wavelength pulsed light source for a wavelength division multiplexed passive optical network

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

Fast optical switch

All-optical signal regeneration

Optical transmission system, optical transmission and reception apparatus, optical transmission apparatus, optical wavelength channel connection recognition control method and wavelength allocation apparatus

Method and apparatus for a variable rate pipe on a linear connection

Optically-controlled optical network and switching node therefor

System, method and apparatus for dynamic path protection in networks

Fast optical switch

Automatic update of squelch tables for optical network applications

Method for selecting a restoration path in a mesh network

Optical bypass method and architecture

Optical wavelength add-drop multiplexer

Allocating connections in a communication system

Hardware functional partitioning in a system platform of a telecommunication network element

Network design device

Wavelength division multiplexing optical transmission system and transmission wavelength control method therefor

Wavelength demultiplexing unit

Optical switch and network system including the same

Optical wavelength division multiplexing transmission system

Optical network system and optical coupling apparatus

Scheduling token-controlled data transmissions in communication networks

Optical protection apparatus

Data transmissions in communication networks using multiple tokens

Token-controlled data transmissions in communication networks

Network global expectation model for multi-tier networks

System and method for communicating traffic between optical rings

Optical network with selective mode switching

Optical repeating apparatus, optical network system, optical network design supporting apparatus and design supporting method

Optical ring transmission network

Photonic data storage network

Optical cross connect apparatus and 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

Wavelength and filter arrangement for WDM networks

Inheritance control method of network control data between transmission apparatuses and transmission apparatus using the same

Method and architecture for security key generation and distribution within optical switched networks

Upgraded flexible open ring optical network and method

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

System and apparatus for a carrier class WDM PON for increased split number and bandwidth

Optical add/drop device

Optical transmission network management process

Method and architecture for secure transmission of data within optical switched networks

Optical transmission device

Diagnosis method for standby system of optical ring network

Fiber optic multiplex modem

Method and system for design and routing in transparent optical networks

Optical-level control method, optical-level control apparatus and wavelength-multiplexing optical network

System and method for performance monitoring in a passive optical network

Methods and apparatuses to provide a wavelength division-multiplexing passive optical network based on wavelength-locked wavelength-division-multiplexed light sources

Optical packet header identifier, optical router incorporating the same therein, and optical routing method using the router

Wavelength division multiplexed (WDM) ring passive optical network (PON) with route protection for replacement of splitter based passive optical networks

Optical ring networks with failure protection mechanisms

Wavelength division multiplexed self-healing passive optical network using wavelength injection method

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

Optical reservation-based network switch fabrics

Bi-directional add/drop node

System and method for discovering wavelengths in network elements having an optical architecture

Procedure for sorting flows in a transport network carrying circuit data flows

Self-healing passive optical network

Optical network termination device for use in passive optical network based on WDM/SCM scheme

Switching control device for wavelength-division multiplexing optical signal

Hybrid optical burst switching with fixed time slot architecture

Apparatus for providing broadcasting service through overlay structure in WDM-PON

WDM-PON system with optical wavelength alignment function

Apparatus for transceiving packets in WDM-PON

WDM/SCM-PON and media access control method for asymmetric packet communication in the same

Optical signal judging system and optical signal judging method

Method of and control node for detecting failure

WDM-PON having bus structure

Methods and apparatus for line system design

Availability aware cost modeling for optical core networks

Optical apparatus for bidirectional optical communication

Method and apparatus for designing backup communication path, and computer product

Configurator tool for optical networking devices

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

Performance enhanced single-hop WDM network with heterogeneous protection

Method of allocating a resource in a multigranular telecommunications network

Hybrid optical ring-mesh protection in a communication system

Apparatus for switching optical channel overhead in optical supervisory channel of optical transport network system and apparatus for forwarding optical channel maintenance signal

Optical csma/cd technique

Highly utilizable protection mechanism for WDM mesh network

Method of determining a spectral route for a given connection in an optical telecommunications network

Method for planning or provisioning data transport networks

Broadcasting and communication combining system based on Ethernet and method thereof

Joint-layer restoration in packet-over-optical networks

Network global expectation model for rapidly quantifying network needs and costs

Optical network architecture for simultaneous transport of analog video signals and ethernet data

All-optical bistable devices

Optical monitor and a method for improved optical monitoring

POP-to-POP optical wavelength protection in a communication system

Branching unit with full or partial broadcast of wavelengths

Process of optical WDM bus networking with DWDM expansion for the method of protected point to point, point to multipoint and broadcast connections

Wavelength division multiplexing transmission system

System and method for automated engineering of optical networks

Optical network system construction method and support system

WDM bidirectional add/drop self-healing hubbed ring 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

Sterilization system and method with temperature-controlled condensing surface

Converting signals in passive optical networks

Add/drop module for single fiber wavelength division multiplexing systems

Bi-directional wavelength division multiplexing module

System and method for communicating optical traffic between ring networks

Communicating data over a communication link

Optical line terminal and method that store the identity numbers of a number of optical network terminals that are associated with a single network end point

Method of determining a spectral route in an optical telecommunications network

Method and system for management of directly connected optical components

Systems and methods for fiber upstream trace determination

Downlink signal synchronization method and system

Systems and methods for fiber upstream trace determination

Laser-shared coherent transceivers and methods

Wavelength division multiplexing (WDM) approach to phase lock distributed digital and RF electronics over fiber

Optical transceiver

Channelized optical wavelength division multiplexing (WDM) adaptive interface

Amplification module

Tunable dense wavelength division multiplexing (DWDM) optical time-domain reflectometer (OTDR)-based optical fiber monitoring

C and L band optical communications module link extender, and related systems and methods

Polarization multiplexed free space optical communication system

N-arm interferometric photonic integrated circuit based imaging and communication system

Optimizing spectral efficiency for a configuration of an optical network

Green regenerative energy efficient network

Method and apparatus for providing power to waveguide systems

In-field calibration of laser transmitter

Apparatus and method for self-learning and predictive DWDM network

Bundling capacity changes in channel holder based optical links

Method and apparatus for providing power to waveguide systems

Systems and methods for coordinating layer 1 and layer 2 protection switching techniques for efficient layer 2 traffic recovery

Optical safety and connections discovery

Optimal partial reconfiguration of spectrum in optical networks

Path computation systems and methods in control plane based networks for photonic layer topologies

Protected transponded services integrated with control plane switched services

Method for determining optical network utilization efficiency

System and method for abstracting wavelength-switched optical network traffic engineering topology in SDN control hierarchy

Optical transceiver for bi-directional optical communication and method of manufacturing the same

Routing device having multiple logical routers

Methods and systems for using modulation frequencies for optical channel monitoring with periodic optical filtering

Fiber diagnosis system for point-to-point optical access networks

Limited wavelength all-to-all wavelength routing network configuration

Server-layer path negotiation between client and server network layers

Media stream distribution system

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

Method for automatic wavelength allocation in a wavelength division multiplexed fiber optic communications network