Optical signal monitor, optical wavelength multiplexing transmitter, and method for monitoring optical signal

Transmission quality estimation system, transmission quality estimation device, and transmission quality estimation method

Optical device

Downstream node setup

Coherent optical receiver device and coherent optical receiving method

Enhanced transmission and reception of remote digital diagnostic information of optical tranceivers

Enhanced digital diagnostics for optical PAM apparatus

TRANSMIT OPTICAL SUB-ASSEMBLY WITH LOCAL FEEDBACK

Fiber optic extender

Method for monitoring and correction of adjacent channel penalty in coherent optical transmission

Optical connector polarity and loss measurement using an integrating sphere-equipped optical measurement device

Nonlinear spatially resolved interferometer for characterizing optical properties of deployed telecommunication cables

Monitor device and monitor method for monitoring transmission line

Spectrum analysis apparatus and spectrum analysis method

System and method for optical time-domain reflectometry and design data wire testing

Optical transceiver compensation, monitoring and alarming

Proactive multi-layer mechanisms to protect packet-optical transport networks

User defined applications executed on optical modules for performance monitoring in optical networks

Optical fibers and methods associated therewith

Optical cryptography systems and methods

Systems and methods for power leveling in passive optical networks

Path computation based on dynamic performance monitoring systems and methods in optical networks

Efficient automatic repeat request for free space optical communication

Channel estimation using intra-symbol frequency domain averaging

Positioning mobile devices with positioning support devices

Secured fiber link system

Optical receiver that receives polarization multiplexed optical signal

Network management device and network management method

Comb-assisted cyclostationary analysis

Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof

Method and apparatus for estimating polarization dependent loss and receiving device

Method of controlling semiconductor optical device that includes semiconductor optical amplifier

Methods and devices for monitoring optical signals

System performance prediction method and apparatus

Channel diagnostics based on equalizer coefficients

Measuring apparatus and method of frequency response characteristic imbalance of optical receiver

Low-crosstalk electro-optical Mach-Zehnder switch

Optical network system, optical node device, and optical network control method

Eye pattern measurement apparatus, and clock and data recovery system and method of the same

Processing method and electronic apparatus for digital signal

Bandwidth throttling

Method of measuring frequency response of optical coherent receiver

Bi-directional transceiver with time synchronization

Methods for compensation of cross-polarization modulation (XPolM) impairments in coherent optical communications

Bandwidth throttling

Method and apparatus for logging transient events of an optical fiber span within a fiber optic system

Optical transmission system and optical transmitter

Coherent optical receiver testing

Optical signal monitor, optical wavelength multiplexing transmitter, and method for monitoring optical signal

Optical transceiver compensation, monitoring and alarming

Optical line testing device using wavelength tunable laser to measure cutting position of optical line

Optical signal frequency calibration method and device

Mode-multiplexing control method, and transmission apparatus and reception apparatus for the same

Enhanced digital diagnostics for optical PAM apparatus

Method and system for assigning performance indicators to objects of a network

Photonic transceiver architecture with loopback functionality

Enhanced digital diagnostics for optical PAM apparatus

Data Transmission System Used between Counter rotating bodies and Design Method of the System

Systems and methods for path protection switching due to client protection switching

Determination of constellation impairment parameters via error-vector magnitude minimization

Optical receivers

Spatial Mode Multiplexer With Optical Reference Path

Multi-layer network system and path setting method in multi-layer network

Transmission adjustment for space division multiplexing of optical signals

Method and optical network for front haul protection

Optical network system, optical node device, and optical path setting method

Enhanced transmission and reception of remote digital diagnostic information of optical tranceivers

Method of controlling the generation of a coherent optical signal and coherent optical signal control apparatus

Feedback-based configuration of a hybrid fiber-coaxial network

Optical fibers and methods associated therewith

Apparatus and method for estimating optical transmission performance

Nonlinear spatially resolved interferometer (NL-SRI) for characterizing optical properties of deployed telecommunication cables

System and method for adaptive traffic engineering based on predicted traffic demand

Apparatus and method for measuring frequency response characteristics of optical transmitter and optical receiver

Electro-optic transceiver module with wavelength compensation

Resilient optical networking

Wavelength division multiplexing optical receiver and driving method for same

Dynamic beam steering optoelectronic packages

Method and apparatus for setting quiet window in passive optical network system

Frequency offset detection and correction in optical spectrum measurement systems

Alignment correction for optical isolator in a coaxial transmitter optical subassembly (TOSA)

Method for selecting modes for transmission over multimode or multicore optical fibres

Optical channel monitoring using expanded-spectrum pilot tone

Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof

Registration method, device and system

Estimation method for optical receiver and light source device

Coherent optical spectrum analyser for monitoring a spectrum of a fibre link

Integrated passive optical tap and optical signal termination

Enhanced digital diagnostics for optical PAM apparatus

Transmission apparatus, transmission system, and transmission control method

Coherent receiver based virtual optical spectrum analyzer

CAPACITY MANAGEMENT SYSTEM FOR PASSIVE OPTICAL NETWORKS

Apparatus and method for increased data rates in underwater communications using orbital angular momentum

Signal encoding and decoding method, device and system

Techniques for raster line alignment in light-based communication

Optical transmitter and control method of optical transmitter

Reflection interference control

WAVELENGTH-DIVISION MULTIPLEXING OPTICAL COMMUNICATION SYSTEM AND METHOD FOR MEASURING OPTICAL PERFORMANCE OF AN OUTPUT SIGNAL FOR THE SYSTEM

OPTICAL TRANSMISSION APPARATUS, NETWORK CONTROL APPARATUS, AND OPTICAL TRANSMISSION SYSTEM

OPTICAL COMMUNICATION LINE MONITORING APPARATUS AND METHOD

Non-contact methods of measuring insertion loss in optical fiber connectors

System, method, and recording medium for communication and message comparison with encrypted light signals

Method and system for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices

Systems and methods for statistical multiplexing with OTN and DWDM

Pluggable active optical module with managed connectivity support and simulated memory table

Bandwidth throttling

Optically Obtaining Gravitational Field Measurements in a Downhole or Subsea Environment

Method and system for high-precision two-way fiber-optic time transfer

Network test instrument supporting hybrid fiber coax and RF over glass installations and method of using same

STRESSED OPTICAL TRANSMITTER AND METHOD OF COMPLIANCE TESTING AN OPTICAL RECEIVER

Low-crosstalk electro-optical Mach-Zehnder switch

Methods, systems, and computer readable media for providing traffic generation or forwarding device that compensates for skew between electrical lanes in a manner that allows coherent detection of transmitted data

Hybrid direct-modulated/external modulation optical transceiver

Pilot-aided feedforward data recovery in optical coherent communications

Hitless, multi-rate optical transmission and reception

Mitigating inter-symbol interference in coded light

COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, AND COMMUNICATION METHOD

Physical quantity measuring device

Dual parallel Mach-Zehnder-modulator device with pre-distorted driving voltages

RECEIVING APPARATUS AND WARNING INFORMATION TRANSFER METHOD

Systems and methods to increase capacity in optical networks based on excess margin

Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof

Path computation based on dynamic performance monitoring systems and methods in optical networks

Digital link viewer for data center interconnect nodes

Method for controlling modulation depth of pilot signal, transmitter, and pilot locking apparatus

Apparatus and method for detecting online failure and system

Feedback-based configuration of a hybrid fiber-coaxial network

Apparatus and method for monitoring optical performance parameter, and optical transmission system

Optical transmission device and protection wavelength selection method

Multifunctional laser diode driving circuit, a module comprising the same, and a method using the same

STATION-SIDE DEVICE AND PON SYSTEM

Method and device for detecting rogue behavior

Optical network system, optical transmission device, and failure occurrence section determination method

Apparatus and methods for quantum key distribution

Transmit optical sub-assembly with local feedback

Radio communication device and frequency error measurement method

Transmission apparatus and transmission method

Optical/radio local access network

Coherent decoding of visible light communication (VLC) signals

Feedback carrier recovery device

OBTN time slot length adjustment method, device and node

Optical wavelength multiplexing device, optical transmission device, and abnormality determination method

Diagnostic port for inter-switch link testing in electrical, optical and remote loopback modes

System and method of de-skewing electrical signals

Methods and apparatus for light-based positioning and navigation

Frequency deviation compensation scheme and frequency deviation compensation method

Level spacing for M-PAM optical systems with coherent detection

Multi-carrier optical transmission system, optical transmitter, and optical receiver

Apparatus and method for detecting uplink optical signal

Pilot-aided coherent receiver for optical communications

Enhanced transmission and reception of remote digital diagnostic information of optical transceivers

Actively monitored optical fiber panel

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

Receiving device and sending device

Optical transmission apparatus, optical transmission system, and polarization dependent loss monitor

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

Systems and methods for telecommunication using high-dimensional temporal quantum key distribution

Method and apparatus for sub-carrier frequency control

Methods and apparatus for monitoring and controlling the performance of optical communication systems

Systems And Methods For A Cross-Layer Optical Network Node

Control of communication network performance by varying active optical cable parameters

MANAGEMENT OF FRAME ALIGNMENT EVENTS IN OPTICAL TRANSPORT NETWORKS

Hardware efficient implementation of decision feedback phase estimation for an ultra high speed coherent receiver

Optical medium reproduction device and optical medium reproduction method

Alarm system for an optical network

Optical transmission system, node apparatus, and reachability determination method

METHOD AND APPARATUS FOR PROCESSING FOR ALARM CLEARING

Survivable hybrid optical/electrical data center networks using loss of light detection

Link speed downshifting for error determination and performance enhancements

Method and apparatus for testing transmission lines normally propagating optical signals

Blind equalization tap coefficient adaptation in optical systems

Optical receiver and optical reception method

METHODS AND APPARATUSES FOR IMPROVED ETHERNET PATH SELECTION USING OPTICAL LEVELS

Relative speed measuring doppler LiDAR

Transmission and reception methods for a binary signal on a serial link

Apparatus and method for inline monitoring of transmission signals

Transmission apparatus

Transmission device, transmission network system, and path delay measuring method

Optical phase noise extracting device and optical phase noise extraction method

Enabling software-defined control in passive optical networks

Enabling software-defined control in passive optical networks

Independent fiber-optic reference apparatuses and methods thereof

Determining asymmetries in a communication network

Hitless, multi-rate optical transmission and reception

Physical layer management for an active optical module

COMMUNICATION SYSTEM, ELECTRONIC DEVICE, ELECTRONIC TIMEPIECE, COMMUNICATION METHOD

Interference detection and avoidance in a telecommunication network

Optical receiver circuit

Active optical cable assemblies and methods for thermal testing thereof

Method for estimating frequency offset, apparatus and system

Non-contact methods of measuring insertion loss in optical fiber connectors

Communication device and method for reproducing data

Apparatus for modular implementation of multi-function active optical cables

Method, system and optical network terminal of ethernet performance detection

Monitoring of communications network at packet and optical layers

System and method of interferometric securities trading, event detection, and communication

Optical element and light receiving device

Multifunctional micro sensor system

Method, device and system for detecting optical signal

Synchronization system, method and master/slave optical module device for detecting asymmetry of optical fibers

Signal processing device and signal processing method

TRANSMISSION DEVICE AND DELAY MEASUREMENT METHOD

Systems and methods for statistical multiplexing with OTN and DWDM

Atmospheric transmissometer using a modulated optical source

Ethernet physical layer monitoring system employing social networking service for delivery of alerts to mobile devices

Link speed downshifting for error determination and performance enhancements

Margin-based optimization systems and methods in optical networks to unblock superchannels

Margin-based optimization systems and methods in optical networks by intentionally reducing margin

Margin-based optimization systems and methods in optical networks for capacity boosting

Monitoring of optical performance in an optical data transmission network

Collision control during delay measurement in optical transport networks

Bias monitoring method and apparatus and transmitter

Distributed acoustic sensing using low pulse repetition rates

Method of optimizing optical signal quality in an optical communications link, optical network element and optical communications link

Method and apparatus for measuring quality parameters of optical transmission channel

Smart receivers and transmitters for CATV networks

Estimation apparatus and method for nonlinear distortion and receiver

OPTICAL ACTIVE CABLE AND OPTICAL TRANSMISSION SYSTEM

Transceiver element for an optical unit of a photoelectric barrier and photoelectric light curtain

Duplex LC communication light detecting adapter and duplex LC communication light detecting structure

Optical modulator and operating point control method

Multiple panel luminaires for light-based communication

Optical transceiver

Techniques for enhancing baud rate in light-based communication

Techniques for spatially resolving received light-based communication signals

Light-based communication transmission protocol

OPTICAL COMMUNICATION APPARATUS CONTROLLING RECEIVED OPTICAL INTENSITY WITH GAIN-SWITCHABLE OPTICAL AMPLIFIER

Current mirror circuit and receiver using the same

Techniques for determining a light-based communication receiver position

System and method for blind frequency recovery

Optical path validation method

Method for measuring optical phase, device for measuring optical phase, and optical communication device

Communication light detection adapter and light communication detection structure for checking an optical communication line

Communication light detector

Coherent optical receiver device and coherent optical receiving method

Apparatus, method and computer program operable to determine estimates

Status monitoring, storage and reporting for optical transceivers by tracking operating parameter variations

Method for controlling the wavelength of a laser source

Bidirectional pentaplex system and method

Photonic transceiver architecture with loopback functionality

Signal monitoring apparatus, signal transmitting/receiving apparatus, and communication apparatus

System and method for testing the speed of a microwave photonics system

Dual rate transceiver

Fiber optic circuit breaker

Methods and apparatus for monitoring and controlling the performance of optical communication systems

Optical transmitter and optical communication device

Device and method for monitoring optical signal quality, and optical transmission device

Nonlinear noise cancellation in wavelength division multiplexing (WDM) systems

OPTICAL MONITORING USING OPTICAL FREQUENCY COMBS

Optical subassembly testing system

Method and apparatus for calculating nonlinear transmission impairment of optical fiber link

Multifunctional optical micro sensor system

Compensation apparatus and method for inter-channel nonlinear damage

Techniques for emitting position information from luminaires

RATELESS VISIBLE LIGHT COMMUNICATION

Ultrafast high resolution optical channel monitor

Non-linear distortion compensator, method of compensating non-linear distortion, and optical receiver

Network monitoring using thin film splitters and avalanche photodiode detectors in multimode application

Testing a passive optical network

Method, system, and node device for monitoring optical performance of wavelength channel

Method and device for determining whether a configuration of an optical transmission interface has to be adjusted

Impairment aware path computation element method and system

Method and device for determining whether a configuration of an optical transmission interface has to be adjusted

Redundancy and interoperability in multi-channel optoelectronic devices

SYSTEM AND METHOD FOR MEASURING DIFFERENTIAL MODE DELAY

Method and system for estimating the noise of a two-photon entangled state

Fiber length measurement system

Method and apparatus for alien device identification in passive optical networks

Asymmetric compensation of polarization dependent loss in dual-polarization optical systems

PON SYSTEM, OLT, AND ONU

Method and apparatus for testing transmission lines normally propagating optical signals

Method and apparatus for presenting indoor traffic map

Optical signal processing device, optical signal processing method and recording medium

Optical Network as a Single Managed Entity

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

Mobile communication repeater integrated monitor device, and method and system for mobile communication relay and information provision

High-Throughput Network Traffic Monitoring through Optical Circuit Switching and Broadcast-and-Select Communications

Device for measurement of the profile of very short duration single pulses

Channel validation in optical networks using multi-channel impairment evaluation

Equalization signal processor, optical receiver including the same, and method for equalization signal processing

Optical communication apparatus

Communication light detecting structure, communication light detecting optical connector including the communication light detecting structure, and communication light detecting optical cable including the communication light detecting structure

Preventing invalid defect detection during OTN out-of-frame states

Diagnostic port for inter-switch link testing in electrical, optical and remote loopback modes

Fast optical receiver

Elastic client interface for tunable optical transponder

Proactive delay measurement for optical transport network

System control of repeatered optical communications system

Methods and apparatuses for improved Ethernet path selection using optical levels

METHOD AND RELATED NETWORK ELEMENT PROVIDING DELAY MEASUREMENT IN AN OPTICAL TRANSPORT NETWORK

System and method for measuring the phase of a modulated optical signal

Optical/radio local access network

System and Method for Isolating RF Signals for Transmission Over Multiple Channels on a Single Transmission Path

Network traffic monitoring apparatus for monitoring network traffic on a network path and a method of monitoring network traffic on a network path

CONTROL DEVICE FOR OPTICAL CHANNEL MONITOR, OPTICAL TRANSMISSION DEVICE, AND METHOD OF CONTROLLING OPTICAL CHANNEL MONITOR

Apparatus and method for monitoring wavelength tunable optical filter

Feedback-based configuration of a hybrid fiber-coaxial network

Method and system for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices

Method and apparatus for measuring round trip delay in a unified optical-coaxial network

DATA SENDING OR RECEIVING METHOD, DEVICE, AND APPARATUS USED IN OPTICAL FIBER TRANSMISSION