OPTICAL PROTECTION SWITCHING BASED ON INTRADYNE SIGNAL DETECTION

OPTICAL SWITCHING UNIT WITH FREQUENCY SELECTIVE PROTECTION MECHANISM

SUBCHANNEL PHOTONIC ROUTING, SWITCHING AND PROTECTION WITH SIMPLIFIED UPGRADES OF WDM OPTICAL NETWORKS

Protection switching based on SNR calculations

Stretched single optical span communications system and method avoiding hazardous power levels

Transmission apparatus and transmission method

Service Protection Method and Network Node

DATA STORAGE

Communication system and OLT system

Subchannel Photonic Routing, Switching and Protection with Simplified Upgrades of WDM Optical Networks

Optical communications module link extender, and related systems and methods

Spectrum coordination in optical line protection to minimize optical transceiver retuning

Optical communications module related systems and methods

OPTICAL COMMUNICATIONS MODULE LINK EXTENDER, AND RELATED SYSTEMS AND METHODS

SUBCHANNEL PHOTONIC ROUTING, SWITCHING AND PROTECTION WITH SIMPLIFIED UPGRADES OF WDM OPTICAL NETWORKS

Optical protection switch with broadcast multi-directional capability

Optical multicast switch with broadcast capability

Optical communications module related systems and methods

High-density submarine ROADM unit with remote WSS redundancy

HIGH-DENSITY SUBMARINE ROADM UNIT WITH REMOTE WSS REDUNDANCY

Upstream failure recovery in an RFoG FFTP network

Optical protection switch with broadcast multi-directional capability

Optical communications module link, systems, and methods

Optical multicast switch with broadcast capability

Optical protection switch with broadcast multi-directional capability

Security protection of terabit ethernet PCS layer using alignment markers

Subchannel photonic routing, switching and protection with simplified upgrades of WDM optical networks

Auxiliary device for setting wavelength and method for setting optical wavelength of optical network unit

Optical communications module link, systems, and methods

Upstream failure recovery in an RFoG FFTP network

Optical subchannel routing, protection switching and security

Highly reliable path accommodation design apparatus and method

Heuristic constraint driven optical channel protection

Optical path fault recovery

Subchannel Photonic Routing, Switching and Protection with Simplified Upgrades of WDM Optical Networks

OPTICAL SUBCHANNEL ROUTING, PROTECTION SWITCHING AND SECURITY

METHOD AND APPARATUS FOR PROTECTING FIBER OPTIC DISTRIBUTION SYSTEMS

Suspension of traffic re-routing during planned network interruption

Highly reliable path accommodation design apparatus and method

Transmission apparatus and method

Method and apparatus for protecting fiber optic distribution systems

Passive optical network optical network terminal apparatus and configuration method

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

Broadband optical communication network having optical channel protection apparatus

Signalling in optical transmission networks

Protection device and protection method for optical network

Route search and wavelength allocation method in optical network and device thereof

Distributed electrical cross device, and system and method thereof for implementing sub-network connection (SNC) cascade protection

Method for complementing dynamic resource-level path computation

Optical transmission system and optical transmission method

SYSTEMS AND METHODS FOR OPTICAL SECURE ALARMED PROTECTIVE FIBER DISTRIBUTION SYSTEMS AND MANAGEMENT

Optical Subchannel-Based Cyclical Filter Architecture

Management, monitoring and performance optimization of optical networks

Subchannel photonic routing, switching and protection with simplified upgrades of WDM optical networks

Optical subchannel routing, protection switching and security

Wavelocker for Improving Laser Wavelength Accuracy in WDM Networks

Method and device for realizing interaction of optical channel data unit protection tangent rings

Data transmission method and network for transmitting a digital optical signal over optical transmission links and networks

Data processing apparatus and redundancy switching method

Fiber sensing system with self-detection mechanism

Optical transmission systems, devices, and methods

Communications Network

OPTICAL TRANSMISSION SYSTEM, NODE DEVICE, AND GMPLS CONTROL METHOD

EFFICIENT PROTECTION MECHANISMS IN A RING TOPOLOGY NETWORK UTILIZING LABEL SWITCHING PROTOCOLS

Method and system for efficient provisioning of multiple services for multiple failure restoration in multi-layer mesh networks

Response to OTUk-BDI for OTN interfaces to restore bidirectional communications

WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM

Method and apparatus of routing convergence in control plane of an intelligent optical network

WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM

Power level management in optical networks

Protection switching arrangement for an optical switching system

Self-monitoring passive optical network

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

Communication apparatus and communication system

Self-healing passive optical network

Methof for securing an optical telecommunication ring network and communication node amplifying communication node and traffic concentrator of a secured optical telecommunication ring network

Availability aware cost modeling for optical core networks

Performance enhanced single-hop WDM network with heterogeneous protection

Hybrid optical ring-mesh protection in a communication system

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

Method and system for protecting against communication loss in an optical network system