Optical transmission device, optical modulator, and bias control method

Optical transmitter and method for transmitting optical signal

PULSE AMPLITUDE MODULATION (PAM) OVER MULTI-MODE LINK WITH RECEIVER SPATIAL FILTERING

Split cascode circuits and related communication receiver architectures

Optical signal-processing apparatus, receiving apparatus, and optical network system

Optical transmitter module

PAM4 transceivers for high-speed communication

Signal transmission apparatus, carrier phase recovery apparatus and method

SEMICONDUCTOR DEVICE

Systems and methods for tiling optically narrowcast signals

System and methods for high symbol-rate optical nyquist signal generation with roll-off factor approaching zero

Apparatus and method for communicating data over an optical channel

Transmitters for optical narrowcasting

All-optical silicon-photonic constellation conversion of amplitude-phase modulation formats

Spectral analysis using a spatial light modulator

Optical switching apparatus, optical cross-connect node, and optical signal switching method

Intensity-modulated direct detection with multi-channel multi-beaming

Re-generation and re-transmission of millimeter waves for building penetration

Systems and methods for tiling optically narrowcast signals

Wavelength division multiplexed telecommunication system with automatic compensation of chromatic dispersion

Optical transmitter

Distributed traveling-wave mach-zehnder modulator driver

Optical modulators

Optical communication system and optical transmission device

Device for modulating the intensity of an optical signal on four different levels

Optical N-level quadrature amplitude modulation (NQAM) generation based on phase modulator

Multilane variable bias for an optical modulator

OPTICAL MODEM

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

System and method for producing high-precision electrical signals and continuous-wave optical signals

Multilevel optical signal system

Fiber-based communication

Intensity modulated direct detection optical transceiver

Digital optical modulator for programmable n-quadrature amplitude modulation generation

Monitoring apparatus for optical signal to noise ratio, signal transmission apparatus and receiver

Luminance change information communication method

Optical link architecture based on wireline equalization techniques

System and method for embedding phase and amplitude into a real-valued unipolar signal

Integrated control module for communication system-on-a-chip for silicon photonics

Add-on IPS controller for LED lighting device

Optical transmitter and control method

Photonic vector signal generation without precoding

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

Optical transmission device, optical communication device, optical communication system, and optical transmission method

Optical PAM modulation with dual drive mach zehnder modulators and low complexity electrical signaling

Optical pairing

Integrated control for silicon photonics

Cascaded waveform modulation with an embedded control signal for high-performance mobile fronthaul

Optical signal generator

Data transmission method

Information communication method

Built-in redundancy scheme for communication system on chip

Minimizing polarization-dependent optical power for transmitters

QAM vector signal generation by external modulator

Probe generator, optical transmission apparatus and probe generating method

Turbo product coded modulation

Differential ring modulator

Integrated control module for communication system on a chip for silicon photonics

Level spacing for M-PAM optical systems with coherent detection

Circuit and method for optical bit interleaving in a passive optical network using multi-level signals

Quadrature amplitude modulation (QAM) vector signal generation by external modulator

Modulating system adapted to generate a multi-level quadrature amplitude modulation

Digital generation of multi-level phase shifting with a Mach-Zehnder modulator (MZM)

OPTICAL MODULATION CONTROL APPARATUS, TRANSMITTER, AND OPTICAL OUTPUT WAVEFORM CONTROL METHOD

Method and system for a distributed optical transmitter with local domain splitting

Stokes-vector-based transmission and detection of optical polarization-division-multiplexed signals

Integrated control module for communication system on a chip for silicon photonics

Two-level coset coding scheme for gigabit Ethernet over plastic optical fiber

Method and apparatus for generating optical polar return-to-zero amplitude modulation signal using reflective semiconductor optical amplifier and wavelength-division-multiplexed passive optical network system using the same

Methods, circuits and optical cable assemblies for optical transmission of high-speed data and low-speed data

Device for amplitude modulation of an optical signal

Driver for pulse amplitude modulation and optical transmitter implementing the same

Optical receiver with threshold control block

Optimization of optical transmission capacity

Multi-electrode photonic digital to analog converting vector modulator

Optical transmitter, method for controlling optical modulator, and controller for optical modulator

Optical transmitter and waveform distortion correction method

Data receiving and sending methods and apparatuses and system

Dense wavelength division multiplexing and single-wavelength transmission systems

Optical modulator driver circuit and optical transmitter

Integrated control module for communication system on a chip for silicon photonics

Muxponder and method of converting a plurality of tributary optical communications signals having a first bit rate into an optical line signal having a second, higher bit rate

Signal recovery circuit and signal recovery method

Linearized optical digital-to-analog modulator

Method of poling and calibration of electro-optic fibers

Wavelength division multiplexing optical transmission apparatus and wavelength division multiplexing optical transmission method

Method, communication apparatus, and communication system

Sliding bias method and system for reducing idling current while maintaining maximum undistorted output capability in a single-ended pulse modulated driver

System and method for producing optical sinc-shaped pulses

Dual-tap electro-optic modulator auto-bias control

Dual-tap electro-optic modulator auto-bias control

Optical transmission device and optical transmission method

Transmitting, receiving and communication systems of optical network and method for modulating signal

Bias control of nested Mach-Zehnder modulators for the generation of optical QAM signals

Driving circuit for driving non-linear optical modulator by signal having plural logic levels

Optimum modulator bias systems and methods in coherent optical transmitters

Quantum communications system with integrated photonic devices

Efficient pulse amplitude modulation integrated circuit architecture and partition

Multilevel intensity modulation and demodulation system and method

Univeral Automatic Bias Control Process for Digital Transmitter

System and method for pilot tone modulation by data bias

Linearized optical digital-to-analog modulator

Optical communication module, optical network unit, and method of controlling light-emitting element

Optical signal-processing apparatus, receiving apparatus, and optical network system

Optical PAM modulation with dual drive mach zehnder modulators and low complexity electrical signaling

Advanced optical modulation generation by combining orthogonal polarized optical signals

Digital optical modulator for programmable n-quadrature amplitude modulation generation

Optical signal modulation

Mach-Zehnder type optical modulator, optical transmission/reception system and control method of Mach-Zehnder type optical modulator

Optical square QAM signal emulation using all-optical PAM to QAM signal conversion

Bit loading for optical discrete multi-tone transmission

Optical transmitters with unbalanced optical sidebands separated by gaps

Method, transmitter and receiver device for transmitting a binary digital transmit signal over an optical transmission link

Clock recovery method for ultra dense WDM systems

Information communication method of transmitting a signal using change in luminance

ENHANCED MODULATOR AND DEMODULATOR

OFDMA overlay on legacy passive optical networks using optical nyquist filtering

Advanced modulation format using two-state modulators

Apparatus, system and method of communicating positioning information

Method and apparatuses for algorithm on QAM coherent optical detection

Linearization of optical intensity modulation systems

Optimum modulator bias systems and methods in coherent optical transmitters

Equalizing a signal modulated using a 5QAM modulation format

Information communication method for obtaining information by demodulating bright line pattern included in image

Information communication method for selecting between visible light communication mode and normal imaging mode

Fast optical receiver

System and method for monitoring and control of an optical modulator for an M-QAM transmitter

Optical output device and method for controlling an optical transmitter

Information communication method for obtaining information specified by striped pattern of bright lines

Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image

METHODS AND ARRANGEMENTS FOR FREQUENCY SHIFT COMMUNICATIONS

Information communication device for obtaining information from a subject by demodulating a bright line pattern included in an obtained image

Information communication device for obtaining information from image data by demodulating a bright line pattern appearing in the image data

Information communication method

Information communication method

Information communication method for obtaining information specified by stripe pattern of bright lines

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

Modulator for optical transmitter

Optical communication interface utilizing coded pulse amplitude modulation

Silicon photonics multicarrier optical transceiver

Optical modulation device and bias voltage control method

Optical multilevel signal pre-equalization circuit, optical multilevel signal pre-equalization transmitter, and polarization-multiplexed pre-equalization transmitter

OPTICAL TRANSMITTER FOR GENERATING MULTI-LEVEL OPTICAL SIGNAL AND METHOD THEREFOR

Modulating apparatus

Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image

Optical transmitter and method for controlling the same

Equalization mechanism for processing traffic based on three-quadrature amplitude modulation (3QAM)

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

Information communication method of obtaining information from a subject by demodulating data specified by a pattern of a bright line included in an obtained image

Simplified serial data over optical fiber for remote receiver/sensor applications

Information communication device of obtaining information by demodulating a bright line pattern included in an image

Methods and apparatus for pre and post equalization in optical communications systems

Multi-channel optical transceiver with offset quadrature amplitude modulation

Pre-distortion techniques for optical modulators to improve constellation point separation

Optical modulator

Method and apparatus for transmitting high-level QAM optical signals with binary drive signals

Variable pulse stretching length by variable beamsplitter reflectivity

Signal generating method and apparatus

High-speed optical 8-QAM modulation by cascading dual-drive mach-zehnder modulator with I/Q modulator

Electrical modulator driver circuit for generating multi-level drive signals for QAM optical transmission

Architecture of 4-ASK Transmitter

Variable line-rate optical transmitter by modulation format hopping using electrical-optical-electrical EOE generated QAM Signal

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

Transport of multiple asynchronous data streams using higher order modulation

Method, apparatus and system for high-speed transmission on fiber optic channel

Generating higher-level quadrature amplitude modulation (QAM) using a delay line interferometer and systems and methods incorporating same

Optical signal-processing apparatus, receiving apparatus, and optical network system

Source-multiplexed pulse amplitude modulation (PAM) optical data communication system and method

Method and system for compensation of laser phase/frequency noise in an optical device

Polarization multiplexing and transmitting apparatus

Linearized optical digital-to-analog modulator

Carrier-suppressed optical pulse train generating device

QUADRATURE MODULATOR WITH FEEDBACK CONTROL AND OPTICAL COMMUNICATIONS SYSTEM USING THE SAME

Optical multi-level transmission system

Methods and devices for modulating a signal

Optical field transmitter and optical transmission system

Transmitter Frequency Peaking for Optical Fiber Channels

Optical signal modulation

Multi-channel optical transceiver with offset quadrature amplitude modulation

System and method for transmitting signals

Optical I-Q-modulator

Advanced modulation format using two-state modulators

Optical signal transmission systems, transmitters, receivers, and optical signal transmission method

OPTICAL TRANSMISSION APPARATUSES, METHODS, AND SYSTEMS

Method and apparatus for generating 8-QAM-modulated optical signal

High-speed multi-level electronic signal generation for optical communications

Methods and apparatus for generating 16-QAM-modulated optical signal

Polarization multiplexed optical transmitter and method for controlling polarization multiplexed optical signal

High speed optical transmitter with directly modulated laser source

16 quadrature amplitude modulation optical signal transmitter

METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION ON FIBER OPTIC CHANNEL

Signal detection for optical transmitters in networks with optical combining

System and method for generating multilevel coded optical signals

Method and apparatus for increasing the capacity of a data communication channel

Modulator device for generating an optical transfer signal modulated by binary signal

Quadrature amplitude modulation signal generating device

Optical modulation signal generating device and optical modulation signal generating method

Method, apparatus and system for high-speed transmission on fiber optic channel

Optical-signal processing apparatus

Linearized optical digital-to-analog modulator

Optical transmission/reception system, optical transmitter, optical receiver, and optical transmission/reception method

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

Multi-level optical data communication circuit

Phase control optical FSK modulator

Multilevel light intensity modulator

Optical modulator for higher-order modulation

Optical modulator

Device and method for transmitting optical data signals

Optical modulator and controlling method and apparatus thereof

METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION

LDPC-coded multilevel modulation scheme

Adjustable bit rate optical transmission using programmable signal modulation

Carrier-suppressed optical pulse train generating device and method

Methods and apparatus for optical transmission of digital signals

Optical transmitter and control method thereof

Polarization multiplexing and transmitting apparatus

Multiple Electrical Level Dispersion Tolerant Optical Apparatus

Phase coded non-return-to-zero optical transmitter

Optical equalization of multi-level symbol constellations

System and method for increasing spectral efficiency, capacity and/or dispersion-limited reach of modulated signals in communication links

APPARATUS AND METHOD FOR LIGHT INTENSITY MODULATION AND OPTICAL TRANSMISSION SYSTEM EMPLOYING THE SAME

Method, apparatus and system for high-speed transmission on fiber optic channel

Communicating a signal according to ASK modulation and PSK modulation

FIBER OPTICAL COMMUNICATIONS SYSTEMS EMPLOYING PHASE INCOHERENT SOURCES

Integral phase rule for reducing dispersion errors in an adiabatically chirped amplitude modulated signal

OPTICAL APPARATUS UTILIZING MODULATION BASED ON A TERTIARY DRIVE SIGNAL, OPTICAL TRANSMITTER, AND OPTICAL TRANSMISSION SYSTEM

Signal transmission device, signal reception device, test module, and semiconductor chip

Data transmitter and method of generating none return to zero optical signal with clock component amplification

Optical transmitter and transmitting method for transmitting cryptogram

Optical modulator utilizing multi-level signaling

Method, apparatus and system for high-speed transmission on fiber optic channel

Method and apparatus for the generation and detection of optical differential varied-multilevel phase-shift keying with pulse amplitude modulation (ODVMPSK/PAM) signals

Multi-level optical data communication circuit

Optical FM source based on intra-cavity phase and amplitude modulation in lasers

Multiformat transmitter

Optical transmission device and optical phase modulator

Quadrature modulator with feedback control and optical communications system using the same

Method and apparatus for encoding optical power and non-payload data in an optical signal

Multilevel pulse position modulation for efficient fiber optic communication

Method, apparatus and system for high-speed transmission on fiber optic channel

Multilevel amplitude and phase encoded signal generation

Method, apparatus and system for high-speed transmission on fiber optic channel

Optical transmission system, optical transmitter, and optical receiver

Transmitter frequency peaking for optical fiber channels

Optical transmission equipment and integrated circuit

Method for modulating an optical signal and optical transmitter

Method and apparatus for bias and alignment control in an optical signal transmitter

Transmission system and method employing electrical return-to-zero modulation

Quadrature amplitude modulation of optical carriers

Chirped managed, wavelength multiplexed, directly modulated sources using an arrayed waveguide grating (AWG) as multi-wavelength discriminator

Optical multilevel-coded signal transmission system and method thereof, optical transmitter, and multilevel-coded signal light generating method

Data transmitter and method of generating none return to zero optical signal with clock component amplification

System and method for optical transmission

Method and apparatus for encoding optical power and non-payload data in an optical signal

Method of pilot-tone signal transmission on an optical fiber and a system thereof

Optical communication system and method using spread-spectrum encoding

Apparatus and method for optical modulation

Optical phase and intensity modulation with improved transmitters

Optical communication systems using physical layer rateless codec technology for forward error correction

Methods and circuits for inner-eye timing center detection and clock phase alignment

Systems and methods for power and modulation management

Setup and training of links between host devices and optical modules including menu-based and multi-stage link training

Active cable interface with hybrid direct drive and re-timer integration

Systems and methods for power and modulation management

System and method for analog estimation and streaming of a spectral correlation function (SCF)

System and method for cryogenic optoelectronic data link

Systems and methods for skew detection and pre-compensation in a coherent optical system

Systems and methods for power and modulation management

Systems and methods for multiband delta sigma digitization

Silicon photonics multicarrier optical transceiver

Silicon photonics multicarrier optical transceiver

Unequal spacing on multilevel signals

Silicon photonics multicarrier optical transceiver

Linearized optical digital-to-analog modulator

Method and system for a distributed optical transmitter with local domain splitting

System and method for cryogenic optoelectronic data link

Probabilistic constellation shaping using set-partitioned M-QAM

Envelope detector-based feedback for radio frequency (RF) transmitters

Silicon photonics multicarrier optical transceiver

M-ARY frequency presence modulation communication system and method

Equalizer optimization for FEC-protected communication links

Optical N-level quadrature amplitude modulation (NQAM) tuned by dithering associated heaters

Optical transmitter

Transmitters for optical narrowcasting

Linearization of photonic analog-digital converter (pADC) system based on multi-dimensional quantization (MDQ)

System and method for cryogenic optoelectronic data link

Electro-absorption modulation with an integrated photodetector

Coded modulation with amplitude and phase-shift keying having a circular constellation for variable spectral efficiency

Transimpedance amplifier with variable inductance input reducing peak variation over gain

Integrated interferometric optical transmitter

Eye modulation for pulse-amplitude modulation communication systems

Optical subcarrier multiplex system with joint forward error correction coding

Apparatus and method for communicating data over an optical channel

Method and system for robust symmetrical number system photonic direction finding

Add-on VLC controller for LED lighting device

Optical signal processing characterization of microwave and electro-optic devices

Built-in redundancy scheme for communication system on chip

Optical conversion system and method with multiple amplitude processing

Apparatus for dual-polarization QAM and optical communications system using the same cross-reference to related application