MARKERS FOR DUAL-POLARIZATION OPTICAL SYSTEMS

Phase-Folding Coherent Optical Technology For Optical Communication

ELECTRICAL DEMULTIPLEXING FOR HOMODYNE DUAL-POLARIZATION (DP) OPTICAL COMMUNICATION SYSTEMS

DIGITAL SIGNAL PROCESSING FOR BURST-MODE COHERENT OPTICAL PACKET DETECTION

OPTICAL MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) RECEIVER USING STOKES VECTOR MEASUREMENTS

SIGNAL PROCESSING METHOD, SIGNAL PROCESSING APPARATUS AND COMMUNICATION SYSTEM

STATE-OF-POLARIZATION MONITORING APPARATUS, STATE-OF-POLARIZATION MONITORING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

COHERENT DETECTION OF SUBCARRIER-MULTIPLEXED SIGNALS USINGA FREQUENCY COMB

OPTICAL MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) DEMULTIPLEXERS

OPTICAL DEVICE, OPTICAL RECEIVER, AND OPTICAL TRANSCEIVER

HIGH SPEED OPTICAL RECEIVER SYSTEM

OPTICAL AMPLIFICATION APPARATUS AND OPTICAL AMPLIFICATION METHOD

COHERENT DETECTION METHOD AND APPARATUS, AND OPTICAL TRANSMISSION SYSTEM

ADAPTIVE EQUALIZER, STEP SIZE DERIVATION METHOD AND PROGRAM

Optical multiple-input-multiple-output (MIMO) receiver using stokes vector measurements

OPTICAL RECEPTION DEVICE AND OPTICAL TRANSMISSION AND RECEPTION DEVICE

Apparatus and Methods for Mitigating Multipath Interference in Fiber Transmission System

FILTER COEFFICIENT UPDATING DEVICE, FILTER DEVICE, DEMODULATING DEVICE, RECEIVING DEVICE,TRANSMITTING AND RECEIVING SYSTEM, FILTER COEFFICIENT UPDATING METHOD, AND RECORDINGMEDIUM

Optical multiple-input-multiple-output (MIMO) demultiplexers

Optical demultiplexing device and transmission device

Asymmetric bidirectional optical wireless communication system based on orbital angular momentum

Optical receiver

Communications system using pulse divider and associated methods

Polarization change tracking apparatus, processing apparatus for received signal and methods thereof

Wavelength demultiplexer, optical transceiver front-end module, photonic circuit, and wavelength demultiplexing control method

OPTICAL COMMUNICATION SYSTEM AND OPTICAL COMMUNICATION METHOD

Rapid polarization tracking in an optical channel

Polarization multi/demultiplexed optical transceiver circuit

Communication system multiplexing and demultiplexing apparatus and methods

Methods and apparatus supporting non-persistent communications

Digital coherent receiver and digital coherent receiving method

Mode demultiplexing hybrid apparatus, methods, and applications

Optical communication device

Systems and methods for analog electronic polarization control for coherent optical receivers

Systems and methods for polarization control using blind source separation

Coherent optical receiver

MITIGATION OF PERIODIC NOISE IN COMMUNICATION

Adaptive equalization filter and signal processing device

Apparatus and method for beamforming communication

Optical receiver, optical reception method, and optical communication system

Systems and methods for polarization control using blind source separation

Systems and methods for analog electronic polarization control for coherent optical receivers

Coherent optical communication with constellations having coordinates on circles

Coherent optical receiver device and coherent optical receiving method

Clock recovery for band-limited optical channels

Transmission apparatus and transmission method

Self-homodyne carrier multiplexed transmission system and method for coherent optical links

Coherent optical receiver

Polarization tracking device, optical receiving device, and polarization tracking method

Optical signal reception apparatus, optical communication system, and method of generating compensation signal of optical signal reception apparatus

Security protection of terabit ethernet PCS layer using alignment markers

Coherent optical reception device

POLARIZATION DEMULTIPLEXING OF OPTICAL SIGNALS

Optical communication with some compensation of nonlinear distortions

Receiving device and receiving method

System and method for polarization multiplexed optical communications

Adjustment method and device for equalizer coefficient, and computer storage medium

Compensation apparatus for offset drift, received signal recovery apparatus and receiver

Phase estimation method and apparatus for polarization multiplexing system

Method and apparatus for estimating polarization dependent loss and receiving device

Optical signal transmission device and electronic apparatus using same

Techniques for receiving DFT spreading modulation signals

Iterative nonlinear compensation

Polarization demultiplexing of optical signals

Polarisation-independent coherent optical receiver

Method and device for estimation of chromatic dispersion in optical coherent communication

Clock recovery method and device

Polarization mode dispersion (PMD) tolerant optical signaling

Intra-transceiver optical superchannel switching via RF sub-band multiplexing technique

Polarization tracking using signal tone information while keeping least mean squares frequency domain equalization

Coherent optical receiver device and coherent optical receiving method

System and methods for adaptive equalization for optical modulation formats

Multichannel data transport suitable for direct optical detection at the receiver

Polarization division multiplexing optical communication reception device, polarization division multiplexing optical communication system, and polarization division multiplexing optical communication method

Techniques for blind equalization of high-order quadrature amplitude modulation signals

MIMO equalization optimized for baud rate clock recovery in coherent DP-QPSK metro systems

Electro-optical implementation of an optical spectrum inverter

Methods and apparatus for coherent duobinary shaped PM-QPSK signal processing

Polarization multiplexing optical transceiver

Polarization demultiplexing of optical signals

Receiver, transmission system, method for receiving polarization multiplexed optical signal, and non-transitory computer readable medium storing receiver control program

Optical 90-degree hybrid circuit and optical receiver using same

Flexible optimization of the signal-to-noise ratio for ultra dense coherent WDM systems

NONLINEAR CROSS-POLARIZATION MITIGATION ALGORITHM

Optical transmitter, optical communication system, and optical communication method

Symbol timing estimation for coherent polarization multiplex optical receivers

Method and arrangement for adaptive dispersion compensation

Signal processing apparatus and signal processing method

Optical communication based on polarization dependent coherent optical Nyquist frequency division multiplexing

Optical polarization demultiplexing for a coherent-detection scheme

Signal processing circuit, signal processing method, optical receiver and optical communication system

Skew compensation and tracking in communications systems

Frame formatting for high rate optical communications

Receiver and failure detection method for receiver

Optical polarization multilevel signal receiving apparatus, optical polarization multilevel signal transmitting apparatus, and optical polarization multilevel signal transmission apparatus

Optical receiver, polarization demultiplexer, and optical receiving method

Processing data in a coherent optical communication system

Optical receiver, polarization separation device and polarization separating method

Optical communication system, optical communication method, optical communication device, and method and program for controlling the same

System and method for polarization de-multiplexing in a coherent optical receiver

System and methods for adaptive equalization for optical modulation formats

TURN-UP AND LONG TERM OPERATION OF ADAPTIVE EQUALIZER IN OPTICAL TRANSMISSION SYSTEMS

Soft-input generation for soft-decision FEC decoding

Frame formatting for high rate optical communications

Skew compensation and tracking in communications systems

Adaptive PMD equalizer and implementation

Modulator with marking of polarization

Digital coherent optical receiver, adaptive equalizer, and digital coherent optical communication method

COHERENT OPTICAL RECEIVING APPARATUS, COHERENT OPTICAL COMMUNICATIONS SYSTEM EMPLOYING SAME, AND COHERENT OPTICAL COMMUNICATIONS METHOD

Coherent receiver

Low power optical transceiver using orthogonal polarization detection technique

Polarization multiplexing optical transmission system, polarization multiplexing optical receiver and polarization multiplexing optical transmission method

Method and arrangement for adaptive dispersion compensation

Optical transceivers for use in fiber optic communication networks

Filter coefficient adjustment apparatus

Combined phase and polarization modulation for optical communication

Systems and methods for the polarization insensitive coherent detection and the polarization division multiplexed transmission of optical communication signals

Frequency estimation in an intradyne optical receiver

Digital Compensation for Optical Transmission System

Systems and methods for carrier phase recovery

Apparatuses and methods of far-end transmitter skew monitoring in digital subcarrier multiplexing systems

Fast frequency multiplexed optical network channel identification

Systems and methods for carrier phase recovery

Optical coherent receiver

Systems and methods for identification and demodulation of complex signal formats

Demultiplexing processing for a receiver

Equalizer tap correction and reseeding