SYSTEMS AND METHODS/PROCESSES FOR OPTICAL INTERFEROMETRIC SENSING

Optical receiving apparatus, optical transmitting apparatus, and frequency offset estimation method

Demodulating modulated signals with artificial neural networks

Mode converter and quadrant photodiode for sensing optical cavity mode mismatch

Transmitter, receiver, and signal processing method

Offset tunable edge slicer for sampling phase amplitude modulation signals

Apparatus configured for visible-light communications (VLC) using under-sampled frequency shift on-off keying (UFSOOK)

Method and apparatus for sub-carrier frequency control

Power pack for the seat-related supply of power to an electrical unit, in particular in an airplane, and method for wireless reading out of status information of a power pack

Signal processing method, apparatus and signal receiver

Method and apparatus for transmitting phase shift keyed optical signals

High-speed optical transceiver systems and methods

Holevo capacity achieving joint detection receiver

Communication system for a nonlinear fiber channel

Estimating phase using test phases and interpolation for modulation formats using multiple sub-carriers

Digital signal processing device

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

High-speed optical transceiver for infiniband and ethernet

Feed-forward carrier phase recovery for optical communications

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

Method and apparatuses for algorithm on QAM coherent optical detection

Methods and arrangements for frequency shift communications by undersampling

Apparatus and method for measuring IQ imbalance for optical receiver

Digital demodulator architecture

Digital coherent receiving apparatus

Processing three-quadrature amplitude modulation (3QAM) traffic using a four-bit phase modulation scheme

Phase compensation receiver

Adaptive constellations and decision regions for an optical transport system

Feed-forward carrier phase recovery for optical communications

Optical communication system, optical transmitter, and transponder

Method and system for pilot-based time domain phase noise mitigation for coherent receiver

System and method for blind equalization and carrier phase recovery in a quadrature amplitude modulated system

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

DPSK OPTICAL RECEIVER

Increasing sensor data carrying capability of phase generated carriers

Phase slip reduction method

Signal Recovery System

Coherent detection using coherent decoding and interleaving

Multiple-symbol polarization switching for differential-detection modulation formats

Phase excursion/carrier wave frequency excursion compensation device and method

Optical differential phase-shift keyed signal demodulator

POLMUX-OFDM-DD transmitter and receiver for reduced complexity and overhead in optical access/metro transmission

Method and device for monitoring and controlling phase difference based on DQPSK modulation

Quadrature time skew detection for coherent optical signals

Digital demodulator architecture

Holevo capacity achieving joint detection receiver

System, Devices and Methods for Subcarrier Recovery at Local Oscillator Frequency in Optical OFDM System

Adaptive equalizer, optical receiver, and tap coefficient correcting method

Optical digital coherent receiver

Optical chips and devices for optical communications

Optimized normalized least mean square phase estimation

Coherent optical receiver with adaptive equalizer initialization system

Method and arrangement for blind demultiplexing a polarisation diversity multiplex signal

Wavelength division multiplexed optical communication system having variable channel spacings and different modulation formats

Demodulation method

Coherent receiver

Frame/symbol synchronization in coherent optical OFDM

Method, apparatus, and system for microwave signal correction

Demodulator and optical transceiver

Feed-forward carrier phase recovery for optical communications

Optical transmitter

Method and apparatus for phase shift keyed optical communications

Delay-Line-Interferometer for Integration with Balanced Receivers

Digital coherent receiver and receiving method

Optical receiver

Polarization Based Delay Line Interferometer

Optical differential phase-shift keyed signal demodulator

OPTICAL RECEIVER AND RECEIVING METHOD

Method, apparatus, and system for microwave signal correction

Broadband radio transceiver with optical transform

Local wireless signal transmitting/receiving apparatus and method using digital radio frequency processing technology

Method and device for phase recovery and communication system comprising such device

Phase control circuit and method for optical receivers

Digital coherent receiving apparatus

Interferometer, demodulator, and optical fiber communication module

Demodulation of an optical signal under control of a kalman filter

Optical receiver with improved noise tolerance

PARALLEL OPTICAL RECEIVER FOR OPTICAL SYSTEMS

Receiving apparatus and method for electronic noise compensation in phase modulated optical transmission

Method and apparatus for sub-carrier frequency control

Coherent optical receiver

Phase error correction in a coherent receiver

Local oscillator frequency offset compensation in a coherent optical signal receiver

Detection of data in signals with data pattern dependent signal distortion

Dual stage carrier phase estimation in a coherent optical signal receiver

Transmitter compensation in decoding of intensity modulated optical OFDM with direct detection

Optical signal reception device and method of controlling optical signal reception

Receiver structure and method for the demodulation of a quadrature-modulated signal

Optical signal phase regenerator for formats of differential modulation with phase changes

Demodulator

Methods to control phase shifts of delay demodulation devices

Mitigation of fiber nonlinearities in multilevel coded-modulation schemes

Optical reception device and optical reception method

Differential multilevel modulated optical signal receiver apparatus

Optical field receiver and optical transmission system

Optical receiving apparatus and digital receiving circuit

DELAY INTERFEROMETER

DELAY INTERFEROMETER

Co-package DQPSK demodulator by Michelson interferometer

Balanced phase-shaped binary transmission in optical communications

APPARATUS AND METHOD FOR DETECTING A MISSING PULSE IN COMPLEMENTARY CODED IRREGULAR SIGNALS

Optical receiver using Mach-Zehnder interferometer

DEMODULATOR SYSTEM AND METHOD USING MULTILEVEL DIFFERENTIAL PHASE SHIFT KEYING

Interferometer, demodulator, and splitting element

High-speed optical transceiver for InfiniBand and Ethernet

Method and apparatus for demodulating an optical differential phase-shift keying signal

Device and method for decoding an optical multi-level DPSK signal

SYSTEM AND METHOD FOR PERFORMING HIGH-SPEED COMMUNICATIONS OVER FIBER OPTICAL NETWORKS

Receiving device and receiving method

Differential M phase shift keying optical receiving circuit

Pulse-Modulated Signal Demodulation Circuit, and Photoreceiver Circuit and Electric Appliance Provided Therewith

Demodulating a signal by performing consecutive beam splitting

Delay interferometer and demodulator

Interferometer for demodulating differential M-phase shift keying signal

Digital apparatus for soft detection of multi-chip DBPSK signals

Optical signal reception device and method of controlling optical signal reception

Differential multilevel modulated optical signal receiver apparatus

Coherent phase-shift-keying

Optical receiver and optical receiving method corresponding to differential M-phase shift keying system

Optical transmission equipment and integrated circuit

All-fiber phase controlled delay interferometer and method of making the same

Optical signal reception device

Method and apparatus for demodulation of optical differential phase shift keyed signals

Optical signal demodulators

Method and system for increasing the spectral efficiency of binary coded digital signals

Broadband radio transceiver with optical transform

System and method for performing high-speed communications over fiber optical networks

Optically interleaved photonic analog to digital converters