In-band control mechanism

Method for complementing dynamic resource-level path computation

Colorless dense wavelength division multiplexing transmitters

BALANCED BYPASS CIRCULATORS AND FOLDED UNIVERSALLY-BALANCED INTERFEROMETERS

Optical switching device, optical add device, and optical drop device

Wavelength regeneration in a network

Technology for arranging optical channels in switching optical equipment

METHOD AND DEVICE FOR TUNABLE OPTICAL FILTERING

Optical multiplexing terminal device, wavelength multiplexing passive optical network system and downlink wavelength transmission method

Optical data path systems

Long Distance Transmission Of Incoherent Optical Signals In An Optical Network

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

Directionless and colorless reconfigurable optical add/drop multiplexer

Optical add drop multiplexer

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

Optical switching architectures for nodes in WDM mesh and ring networks

Transponder Aggregator Without Wavelength Selector for Colorless and Directionless Multi-Degree ROADM Node

Optically variable filter array apparatus

Coherent augmented optical add-drop multiplexer

Method and system for providing fault recovery using composite transport groups

Tunable receiver

Long reach optical network

Flexible branching unit and system including the same

Optical network and control method therefor

DIRECTIONLESS RECONFIGURABLE OPTICAL ADD/DROP MULTIPLEXER

Medium access control device and method for optical packet-switched metro WDM slotted-ring networks

Apparatus and method for packet-optical integrated transport

Wavelength path communication node apparatus, wavelength path communication control method, and recording medium

Maintenance friendly optical fiber switching system

Data center optical network

Fabrication-tolerant waveguides and resonators

Receiver for optical transverse-mode-multiplexed signals

40, 50 and 100 Gb/s optical transceivers/transponders in 300pin and CFP MSA modules

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

Optical multiplexer

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

Optical processing

Hitless tuning and switching of optical resonator amplitude and phase responses

Method and device for hitless tunable optical filtering

METHOD AND DEVICE FOR HITLESS TUNABLE OPTICAL FILTERING

Method and device for hitless tunable optical filtering

System and method for obtaining optical signal information

Optimized directionless optical add/drop module systems and methods

Growable multi-degree ROADM

Systems and methods for channel power offsets for multi data rate DWDM transmission over optical add drop multiplexers

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

DIRECTIONLESS RECONFIGURABLE OPTICAL ADD/DROP MULTIPLEXER

Optical channel monitor

GANGED OPTICAL SWITCH

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

Fabrication of an optical ring resonator device

Optical signal switching device

Optical add/drop multiplexer including reconfigurable filters and system including the same

Optical add/drop multiplexer

Method and system for tunable optical filtering

Method and system for providing fault recovery using composite transport groups

Optical transmission system and method for chromatic dispersion compensation

Methods and apparatus for constructing large wavelength selective switches using parallelism

Methods and apparatus for reconfigurable add drop multiplexers

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

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

Controllable optical add/drop multiplexer

Performance optimized receiver with bandwidth adaptive optical filter for high speed long haul WDM systems

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

Self checking optical add drop multiplexer

Rapidly tunable wavelength selective ring resonator

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

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

APPARATUS AND METHOD OF OPTICAL COMPENSATION FOR SUBMARINE OPTICAL CABLE

System and Method for Wavelength Conversion and Switching

Tuning select fiber optic channels for channel monitoring

Methods of placing reconfigurable optical add/drop multiplexers (ROADMS) in a network

Method and system for hitless tunable optical processing

Method and system for performance monitor for digital optical DWDM networks

Optical transmitter/receiver module

Planar lightwave circuit based tunable 3 port filter

Scalable reconfigurable optical add-drop multiplexer

Bidirectional wavelength cross connect architectures using wavelength routing elements

Fabrication-tolerant waveguides and resonators

Modular all-optical cross-connect

Optical processing

Long reach optical network

Optical node for mesh-type WDM optical network

System and method for providing wireless over a passive optical network (PON)

Balanced bypass circulators and folded universally-balanced interferometers

Integrated optic devices and photosensitive sol-gel process for producing integrated optic devices

Tunable bidirectional multiplexer/demultiplexer for optical transmission system

Node for an Optical Communication Network

Optical processing

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

Wavelength division multiplexed optical communication system with rapidly-tunable optical filters

System and method for bandwidth allocation in an optical light-trail

Method and System for a Distributed Wavelength (Lambda) Routed (Dlr) Network

Optical switching architectures for nodes in WDM mesh and ring networks

Acousto-optic device and fabrication method of acousto-optic device

Methods and apparatus for optimizing utilization in reconfigurable optical add-drop mulitplexer based ring network

Optical add/drop device

Dynamic blocking of token-controlled data transmissions in communication networks

Highly scalable multi-granular node architecture

Bidirectional wavelength cross connect architectures using wavelength routing elements

Optical add/drop multiplexers

System and method for bandwidth allocation in an optical light-trail

Optical processing

Optical switch router

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

Optical filter

Tunable filter

Hitless tunable filter

Optical double sideband modulation technique with increased spectral efficiency

Packet and optical routing equipment and method

Optical add/drop device, optical add/drop system, and optical signal add/drop method

System and method for protecting optical light-trails

Optical apparatus and optical cross connect apparatus

Wavelength grid for DWDM

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

Integrated optic devices and photosensitive sol-gel process for producing integrated optic devices

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

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

Ring type optical transmission system and optical apparatus connected to same

Optical ring network for extended broadcasting

D(WDM) communications network employing periodic spectral multiplex processing

Optical network and optical add/drop apparatus

Optical communication network system, wavelength routing apparatus, communication node, optical path managing method for use in optical cross connect apparatus, and apparatus for that method

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

Optical backplane system

Wavelength-division multiplexing optical transmitter

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

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

Modular wavelength selective switch

Hybrid optical ring network

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

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

Optical add/drop device

Multi-band architecture for DWDM rings

Optical wavelength division multiplexed system using wavelength splitters

Acousto-optic device and fabrication method of acousto-optic device

Optical wavelength add-drop multiplexer

Optical network with selective mode switching

Compact and reconfigurable optical device for controlled insertion/dropping of optical resources

Wavelength division multiplex optical telecommunications network

Tuneable filter arrangement

Hitless errorless trimmable dynamic optical add/drop multiplexer devices

Optical transmission device

Optical ring networks with failure protection mechanisms

Hitless variable-reflective tunable optical filter

Coupler-based optical cross-connect

Reconfigurable optical device for controlled insertion/dropping of optical resources

Optical performance monitor using co-located switchable fiber bragg grating array

Optical add-filtering switching device

Method and device of analyzing a signal transmitted via a communication link

Variable-bandwidth multi-granularity optical add/drop network

Bidirectional multichannel optical telecommunication system

Reconfigurable optical device for wavelength division multiplexing networks

Optical network with sub-band rejection and bypass

Scalable and movable DWDM usage of CWDM networks

System and method for communicating optical traffic between ring networks

Optical processing

Optical add-drop apparatus and method

Optical device with tunable coherent receiver

Broadband wavelength division multiplexing for free space optical communications

Systems and methods to maintain phase relations of an optical signal in a photonic dot product engine

Adaptive inline modulation tuning for optical interfaces

Methods and apparatus for adaptive compensation of signal bandwidth narrowing through finite impulse response filters

Reducing interference from channel holders in an optical link

Time and margin constrained routing, spectrum, and restoration speed assignment in optical networks

Handling channel holder failures in channel holder equipped optical links

Method and system for autonomous discovery of colored interface mappings across routing and optical layers

Methods and apparatus for adaptive compensation of signal bandwidth narrowing through finite impulse response filters

Multi-layer system self-optimization

Systems and methods for reconfiguring an adaptive optical network when adding an optical path

Adaptive flexible grid in an optical network

Communication system for connecting network hosts

Methods and apparatus for pre-programming layer-0 service turn up speeds for photonic service provisioning or restoration

Multi-mode wavelength division multiplexing for free-space optical communications

Methods and apparatus for adaptive compensation of signal bandwidth narrowing through finite impulse response filters

Credit based approach to optimizing optical transmission

Method and system for controlling spectral occupancy