223800 ⎘
Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication; Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal Performance monitoring; Measurement of transmission parameters
Superimposing optical transmission modes
#602Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
#603Level equalization to compensate for implementation impairments in optical communication systems with high-order modulations
#604Optical transmission system, node apparatus, and reachability determination method
#605Optical transmission system and control method
#606Network interface device synchronization
#607Optical transmission system, method of testing optical transmission system, and non-transitory computer-readable medium
#608Characterization of linear crosstalk on multiplexed optical signals
#609Wavelength-division multiplexing optical communication system and method for measuring optical performance of an output signal for the system
#610Adaptive quantum information processing
#611Cueing system for universal optical receiver
#612Read optical power link service for link health diagnostics
#613Method and device for detecting signal power
#614Method of characterizing impairments detected by equalization on a channel of a network
#615Polarization dependent loss compensation
#616Method and system for monitoring performance of wavelength path, and node device
#617Crosstalk measuring method and crosstalk measuring device
#618Physical layer management for an active optical module
#619Optical receiver implemented with semiconductor amplifier
#620Diagnostic port for inter-switch and node link testing in electrical, optical and remote loopback modes
#621Performance monitoring in passive optical networks
#622Multiple sensor optical communication systems and methods
#623Coherent probe and optical service channel systems and methods for optical networks
#624Exchange device
#625Photonic monitoring for optical signals
#626Determining asymmetries in a communication network
#627Transmission device and method for measuring delay
#628Nonlinear estimating apparatus and method and receiver
#629Monitoring and controlling optical nodes
#630Method and system for determining in-band optical noise
#631Method and system for testing jitter compatibility
#632Multiplexer/demultiplexer and multiplexing/demultiplexing method
#633Method and system of automatic regeneration of optical signals
#634Device and method for processing an optical signal
#635Differential eye diagrams
#636Impairment aware path computation element method and system
#637Microwave photonic true-time-delay
#638Distance measurement
#639Method and system for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices
#640Carrier phase estimator for non-linear impairment monitoring and mitigation in coherent optical systems
#641Technique for monitoring optical networks
#642Communication apparatus with transmitted rate detecting function and method thereof
#643System and method for blind frequency recovery
#644Transmission quality determination method, transmission path selection method and network management system
#645Circuits, architectures, apparatuses, systems, and methods for merging of management and data signals, and for recovery of a management signal
#646Monitoring system employing carrier recovery
#647Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
#648Network interface device synchronization
#649Apparatus and method for performing line analysis of continuous data signals
#650Reconfigurable DSP performance in optical transceivers
#651Apparatus for self-phase modulation noise calculation, apparatus for self-phase modulation noise elimination and optical coherent receiver
#652Diagnostic port for inter-switch link testing in electrical, optical and remote loopback modes
#653Method and apparatus for deriving parameters of optical paths in optical networks using two-wavelength OTDR and a wavelength-dependent reflective element
#654Self-adaptive receivers not requiring FEC feedback
#655System and method for cross-phase modulation noise reduced transmission in hybrid networks
#656Method and apparatus for testing transmission lines normally propagating optical signals
#657Crosstalk coefficient estimating apparatus and crosstalk coefficient estimating method
#658Differential eye diagrams
#659Segmented and overlapped skew tracking method for SERDES frame interface level 5
#660Method and apparatus for sub-carrier frequency control
#661Channel validation in optical networks using multi-channel impairment evaluation
#662Optical signal quality monitoring apparatus and method
#663Dynamic performance monitoring systems and methods for optical networks
#664Multichannel polarization control for polarization multiplexed optical transport networks
#665Wavelength division multiplexed systems with optical performance monitors
#666Performance monitoring in passive optical networks
#667Optical coherent receiver, apparatus for and method of monitoring performance thereof
#668Monitoring All-Optical Network Performance
#669Method and circuit for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices
#670Transmission path monitoring method and device
#671Multichannel optical transport network skew calibration
#672Transmission-path-type specifying apparatus and transmission-path-type specifying method
#673Monitoring for High Speed OFDM Signal Transmission
#674Monitoring apparatus and method for polarization scrambler and optical transmission apparatus
#675Apparatus and method for performing line analysis of continuous data signals
#676System and Method for Self-Generation of Reference Signals
#677Optical transmission apparatus, subscriber apparatus and optical communication system
#678MONITOR CIRCUIT FOR MONITORING PROPERTY OF OPTICAL FIBER TRANSMISSION LINE AND QUALITY OF OPTICAL SIGNAL
#679Tunable optical discriminator
#680Redundancy and interoperability in multi-channel optoelectronic devices
#681APPARATUS AND METHOD FOR MONITORING QUALITY OF OPTICAL SIGNAL
#682Optical signal monitoring apparatus and method
#683Monitoring mechanisms for optical systems
#684Fiber array unit with integrated optical power monitor
#685Method and apparatus for determining optical path attenuation between passive optical network nodes
#686Method and system of monitoring a data transmission link, particularly an optical, bidirectional data transmission link
#687Optical signal monitoring system and optical signal monitoring method
#688Optical-phase monitoring appratus and optical-phase monitoring method
#689Data signal amplitude and cross-point detectors in an optical modulator control system
#690Full-band optical spectrum analyzer and method
#691All-optical regenerator and optical network incorporating same
#692Methods and systems for optical performance monitoring
#693Optical network test access point device
#694Apparatus and method for adaptive adjustment and performance monitoring of avalanche photo-diode optical receiver and laser transmitter for fiber link long haul applications
#695Analyzing the quality of an optical waveform
#696Method and apparatus for testing transmission lines normally propagating optical signals
#697Signal identification method
#698Remote monitoring of optical fibers
#699Optical band scanning monitor system and method
#700Capacity management system for passive optical networks
#701Method and apparatus for testing optical networks
#702Network tap module
#703Optical switching apparatus and optical communication network system
#704Performance monitoring based on optical autocorrelation
#705Dispersion compensation quantity setting method, receiving terminal station, and wavelength-multiplexing optical transmission system
#706Control method and control apparatus of optical device
#707Monitoring mechanisms for optical systems
#708Cable station for an undersea optical transmission system
#709Optical performance monitor
#710Optical analyzer and method for measuring spectral amplitude and phase of input optical signals using heterodyne architecture
#711Network quality evaluation based on network metrics
#712Systems and methods for identifying a source of a degradation in a passive optical network
#713Optical communication systems and silicon photonics passive multiplexers and demultiplexers having Mach-Zehnder interferometer structures
#714Systems and methods for identifying a source of a degradation in a passive optical network
#715Systems and methods for maintaining equipment of a passive optical network
#716Systems and methods for time-bin quantum session authentication
#717Systems and methods for predicting times-to-failure of passive optical network components
#718Systems and methods for maintaining equipment of a passive optical network
#719Systems and methods for identifying a source of a degradation in a passive optical network
#720Dual marker based latency measurement
#721Optimizing routes across an optical network based on traffic stream bandwidth utilization
#722Method of monitoring events in an area divided into zones
#723Re-calibrating an in-service optical multiplex section (OMS)
#724Method to reduce optical signal fading in signal receive aperture
#725Configuring an optical network termination
#726Systems and methods for time-bin quantum session authorization
#727Logical cut of an optical fiber due to fiber events
#728Cell site repair part prediction machine learning system
#729Systems and methods for single chip quantum random number generation
#730Digital fiber nonlinearity compensation
#731Unequal spacing on multilevel signals
#732Thermal calibration of a ring modulator
#733Time base correction method for high accuracy sampling scope-based measurements
#734Pseudo frequency division multiplexing
#735Systems and methods for single chip quantum random number generation
#736Systems and methods for time-bin quantum session authentication
#737Systems and methods for identifying rogue optical network units in optical networks with wavelength-division multiplexing
#738Apparatus and method for rapid identification of candidate laser communication beacons
#739Adaptive optical modem configuration based on operating conditions
#740Methods and apparatus for radio frequency (RF) photonic spectrometer using optical frequency combs
#741Systems and methods for identifying a source of node return system degradation
#742Method for determining optical network utilization efficiency
#743Channel diagnostics based on equalizer coefficients
#744Synchronization of a remote wide band receiver using a narrow band low frequency signal
#745Non-invasive wearable respiration rate monitoring system
#746Secure fiber optic seals enabled by quantum optical communication concepts
#747Power efficient optical-frequency synthesizer
#748Systems and methods for identifying a source of node return system degradation
#749Coherent optical receiver testing
#750System and method for automatic bandwidth management
#751Timing synchronization and intrusion detection via an optical supervisory channel (OSC)
#752Enhanced digital diagnostics for optical PAM apparatus
#753Detection of impairments in a network system
#754Dynamic range extension of heterodyne fiber-optic interferometers via instantaneous carrier measurement
#755Reconstructing light-based communication signals using an alias frequency
#756Channel diagnostics based on equalizer coefficients
#757Optical signal processing characterization of microwave and electro-optic devices
#758Apparatus and method for measurement of propagation time of a data stream in a transport network
#759System and methods for autonomous signal modulation format identification
#760Hybrid ranging using an out of band signal in optical networks
#761Microchannel plate based optical communication receiver system
#762Detection of impairments in a network system
#763Method and system for evaluating an optical device