OPTICAL SPLITTING/COUPLING DEVICE, OPTICAL SUBMARINE CABLE SYSTEM, AND OPTICAL SPLITTING/COUPLING METHOD

Management and control system of wavelength-multiplexed subranging electro-optic modulator (SEOM)s for high dynamic range applications

ELECTRICAL-TO-COHERENT OPTICAL-TO-ELECTRICAL DATA COMMUNICATION CABLE ASSEMBLY

SYSTEMS AND METHODS FOR UTILIZING PHOTONIC DEGREES OF FREEDOM IN A PHOTONIC PROCESSOR

System and method for performing in-service optical network certification

Systems and methods for utilizing photonic degrees of freedom in a photonic processor

System and method for performing in-service optical network certification

System and method for performing in-service optical network certification

System and method for performing in-service optical network certification

Use of band-pass filters in supervisory signal paths of an optical transport system

System and method for performing in-service optical network certification

Bidirectional communication module

System and method for performing in-service optical network certification

Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting

System and method for performing in-service optical network certification

Method and apparatus for managing a frequency spectrum in a wavelength division multiplexing network

High capacity fiber-optic integrated transmission and switching systems

Data transmission in a communications network

Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting

Bidirectional communication module

Optical multiplex level and optical channel layer server trails in wavelength switched optical networks

Memory access system, apparatus, and method

Device for simultaneous data and power transmission over an optical waveguide

Method and monitoring device for determining equalization parameters, computer program, information storage means

System and method for performing in-service optical fiber network certification

Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting

Arrayed waveguide grating based modular interconnection networks and methods for constructing and applying the same

High capacity fiber-optic integrated transmission systems

Optical multiplex level and optical channel layer server trails in wavelength switched optical networks

Method for transmitting and method for receiving a binary data stream, transmitter and receiver for carrying out the method

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

Bi-directional optical transceiver module

Distributed base station signal transmission system and communication system

Wavelength real time display on the equipment for WDM optical networking systems with wavelength tunable capability

Method for tuning a tunable optical transmitter in an optical WDM transmission system and corresponding optical WDM transmission system

Protected optical single-fiber WDM system

Filtered laser array assembly with external optical modulation and WDM optical system including same

Remote timing communications

System and method for performing in-service optical network certification

Rotator external to photonic integrated circuit

Optical frequency-division multiplexer, optical communication system, and optical frequency-division multiplexing method

Differentiation of power and channel count changes in optically amplified links

OPTICAL TRANSMISSION SYSTEM, PUMP-LIGHT SUPPLY CONTROL METHOD, AND PUMP LIGHT SUPPLY APPARATUS

OPTICAL RECEPTION APPARATUS AND OPTICAL NETWORK SYSTEM

Optical network unit, method for processing data in an optical network and communication system

Optical spectrum recovery

Transport of multiple asynchronous data streams using higher order modulation

Method and system for an adaptive channel grid of an optical network

Optical transport system and optical node

Optical transmission apparatus and optical transmission system

OPTICAL TRANSPORT MULTIPLEXING CLIENT TRAFFIC ONTO PARALLEL LINE SYSTEM PATHS

Method and apparatus for local optimization of an optical transmitter

Method and apparatus for local optimization of an optical transmitter

Apparatus and method for driving wavelength-independent light source

Upgradable WDM system

IMPROVEMENTS IN OPTICAL NETWORKS

CONTROL CIRCUIT, COMMUNICATION SYSTEM, AND CONTROL METHOD

Optical communication system, device and method employing advanced coding and high modulation order

TRANSMITTING DEVICE AND TRANSMITTING/RECEIVING DEVICE

Optical transmission device and optical transmission system

Communications apparatus, multiplex communications apparatus, communications system, and communication method

WAVELENGTH MULTIPLEXING OPTICAL COMMUNICATION DEVICE AND OPTICAL DISPERSION COMPENSATION METHOD

BI-DIRECTIONAL CWDM (OR DWDM) TRANSMISSION SYSTEM USING SINGLE WAVELENGTH BI-DIRECTIONAL TRANSCEIVERS

Wavelength division multiplexed optical communication system architectures

Wavelength division multiplexed optical communication system having variable channel spacings and different modulation formats

Optical communication system, optical communication apparatus, and optical communication method thereof

Optical communications network node and method of controlling data transmission between optical communications network nodes

STATUS LINK FOR MULTI-CHANNEL OPTICAL COMMUNICATION SYSTEMS

DATA STREAM UPGRADE APPARATUS AND METHOD

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

Orthogonally-combining interleaving filter multiplexer and systems and methods using same

SYSTEM AND METHODS FOR QUANTUM KEY DISTRIBUTION OVER WDM LINKS

Tunable multi-wavelength optical transmitter and transceiver for optical communications based on wavelength division multiplexing

SENDING AND RECEIVING INFORMATION

Optical transmission system, transmitter, receiver and method

Optical interface device, and abnormality monitoring method for input frequency deviation

Light transmission device, optical relay device, optical wavelength multiplexing transmission apparatus, and light transmission method

Restoration scheme for an optical network and method of using such a scheme

System and method for performing in-service optical fiber network certification

Method and system for bi-directional communication over a single optical fiber

OPTICAL SIGNAL IDENTIFYING OR DETECTING METHOD AND APPARATUS, AND IDENTIFYING AND DETECTING SYSTEM

Cross-connect using ethernet multiplexors for a simple metro ethernet network

DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING SYSTEM, METHOD, AND DEVICE

Maintenance friendly optical fiber switching system

Redundant communication timing for remote nodes

Optical device for rearranging wavelength channels

High-speed optical transponder systems

Wavelength real time display on the equipment for WDM optical networking systems with wavelength tunable capability

Forward error correction (FEC) enabled photonic integrated circuit (PIC) chips with multiple signal channels

System and method for implementing an automatic discovery function in a DWDM network

Optical relay device and optical relay transmission system

OPTICAL TRANSMISSION APPARATUS, OPTICAL COMMUNICATION METHOD, AND OPTICAL COMMUNICATION SYSTEM

Detection of data in signals with data pattern dependent signal distortion

Detection of data in signals with data pattern dependent signal distortion

Optical transmission device, optical transmission system including the same, and optical transmission method

Submarine optical repeater

Communication device for path control, and path control method

Point-to-multipoint optical communication system

METHOD, DEVICE, AND SYSTEM FOR POLARIZATION DIVISION MULTIPLEXING AND DEMULTIPLEXING

Channel assignment method and apparatus for wavelength-division-multiplexed transmission system

Multi-lane signal transmitting and receiving apparatuses

Transmission method of WDM light and WDM optical transmission system

Fault locator for long haul transmission system

Upgrading method, system and apparatus of low-density wavelength division multiplexing system

Communication network management system, wavelength-division multiplex apparatus, communication management apparatus, communication network management method and communication network management program

Optical reception device, optical receiving method, and optical transmission apparatus

Apparatus for transmitting and receiving visible light communication data

WDM systems and methods

OPTICAL COMMUNICATION APPARATUS AND METHOD OF CONTROLLING SEMICONDUCTOR OPTICAL AMPLIFIER

Electro-optic conversion module, optic-electro conversion module and conversion methods thereof

Degradation adaptation network

System and methods for quantum key distribution over WDM links

Transmission path monitoring method and device

Network protection switching mechanisms and methods of network protection

Frame processing apparatus, optical receiving apparatus, optical transceiving apparatus, optical transmission system, and frame processing controlling method

Wavelength multiplexed optical system with multimode optical fibers

Spectrally Efficient Parallel Optical WDM Channels for Long-Haul MAN and WAN Optical Networks

WAVELENGTH DIVISION MULTIPLEXED OPTICAL COMMUNICATION SYSTEM HAVING A RECONFIGURABLE OPTICAL SWITCH AND A TUNABLE BACKUP LASER TRANSMITTER

Integration of WDM channels with disparate bit rates

Transmission line monitoring system

Communication network with node bypassed co-routed multi-channel traffic

Intelligent pluggable transceiver stick capable of diagnostic monitoring and optical network management

Optical transmitting apparatus and optical transmitting and receiving apparatus

Wavelength distribution for optical transport

SIGNAL-LIGHT IDENTIFYING APPARATUS, WDM TRANSCEIVER, AND METHOD OF IDENTIFYING SIGNAL LIGHT

Systems and methods for wavelength scanning of in-service wavelength division multiplexing systems

METHOD, SYSTEM AND DEVICE FOR SETTING UP WAVELENGTH CONNECTION

OPTICAL TRANSMISSION APPARATUS AND OPTICAL TRANSMISSION METHOD

System and method for dual wavelength communications of a clock signal

Mapping a client signal into transport frames

System and method for communicating timing to a remote node

Optical transmission system and method for chromatic dispersion compensation

VISIBLE LIGHT COMMUNICATION SYSTEM AND OPTICAL WIRELESS LAN DEVICE

Method and system for protecting integrated optoelectronic devices

Optical wavelength multiplexing device, optical wavelength dividing device, optical wavelength dividing multiplexing device, and method of controlling optical band-pass filter

Sending and receiving information

Optical Communication System And Method For Distributing Content Aboard A Mobile Platform During Travel

Test Instrument For Testing Multi-Wavelength Optical Networks Using Two Or More Tunable Lasers

Protocol-less all-optical 1+1 bidirectional revertive linear protection system

Method and system for power stability control in wavelength division multiplexing networks

Method, system and apparatus for distributing node information

Optical characteristic measuring apparatus

Methods and apparatuses for handling multiple failures in an optical network

Method and an apparatus to automatically verify connectivity within an optical network node

System and method for wavelength monitoring and control

SYSTEM AND METHOD FOR PERFORMING IN-SERVICE FIBER OPTIC NETWORK CERTIFICATION

Optical transmitter system

Optical characteristic measuring apparatus

ASYMMETRIC ETHERNET OPTICAL NETWORK SYSTEM

High Bit Rate Packet Generation with High Spectral Efficiency in an Optical Network

Method and system for controlling optical network

Status link for multi-channel optical communication systems

Optical communication systems and methods of operating such optical communication systems

Optical protection switch and method for optical protection switching

Optical wavelength multiplexing system, optical wavelength multiplexing method, and computer product

Optical receiving apparatus and optical communication system using same

METHOD AND RECEIVER TO INCREASE THE SPECTRAL EFFICIENCY OF DPSK MODULATION FORMAT

Optical transmission device

Optical network system

Method and apparatus for measurement of service disruption interval

Optical transmission apparatus

OPTICAL COMMUNICATION SYSTEM, OPTICAL COMMUNICATION APPARATUS, AND OPTICAL COMMUNICAITON METHOD THEREOF

Master/slave multiple path optical switching device

Multi-channel protection switching systems and methods for increased reliability and reduced cost

Optical communication system

Simple fibre channel speed negotiation across transport

OPTICAL EQUALIZATION FILTERING OF DWDM CHANNELS

Wavelength division multiplex (WDM) transmission system

Use of beacons in a WDM communication system

Interconnections and protection between optical communications networks

Data transmission method and data transmission device for transmitting data through a transmission line that is integrated with a plurality of links

Method and apparatus device for initializing an end-to-end link in a fiber optic communications system

Optical communication systems and methods of operating such optical communication systems

Method and apparatus for automatic shut-down and start-up of optical amplifiers in optical networks

Wavelength division multiplexing apparatus

Method for conveying management information

Optical receiving apparatus and dispersion compensating method therein

System and methods for quantum key distribution over WDM links

Optical transmission system constructing method and system

Optical WDM transmission system

Discovery of an adjacent network element within a network data plane

Systems and methods for placing line terminating equipment of optical communication systems in customer points of presence

Control of parameters in a global optical controller

WDM system

Optical characteristic measuring apparatus

1:N protection in an optical terminal

Method of transmitting an optical signal in an optical transmission system and optical transmission system for implementing such a method

Variable communication capacity data transmission device and data transmission device

Sideband filtering of directly modulated lasers with feedback loops in optical networks

Link system for photonic cross connect and transmission apparatus

Optical channel assigning system and method of assigning data to optical channels in optical network

Method, system, and storage medium for preventing duplication and loss of exchanges, sequences, and frames

Method for optimizing enhanced DWDM networks

System and method for mitigating dispersion slope in an optical communication system

Differentiation of power and channel count changes in optically amplified links

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

Optical transmission apparatus and optical transmission system

All-optical protection signaling systems and methods in optical communication networks

Package starting control device

WDM layer-based optical chanel protecting device and method thereof

Optical transmission equipment preventing malfunction in recovery from fault

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

Wavelength division-multiplex system

Optical transmission system having noise-elimination function

System and method for subcarrier modulation in ISM band as supervisory channel

WDM systems and methods

Protection for bi-directional optical wavelength division multiplexed communications networks

Switching control device for wavelength-division multiplexing optical signal

Method of performing protected transmission over a wavelengh-division multiplexed network

Transmission apparatus and path selection method of a transmission apparatus

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

FTTH system for convergence of broadcasting and communication through switched broadcasting

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

Optical transmission system

Bi-directional wavelength division multiplexing module

Communicating data over a communication link

Enhanced subranging electro-optic modulator (SEOM) for high dynamic range applications

Wavelength-multiplexed subranging electro-optic modulator (SEOM) for high dynamic range applications

Wavelength-multiplexed subranging electro-optic modulator (SEOM) for high dynamic range applications

Communication fabric for a cluster of network hosts

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