H04B10/614 - page 2 - CPC Classification Index

#301

20140270803

2014-09-18

OPTICAL TRANSMISSION USING POLARISATION DIVERSITY

#302

20140199068

2014-07-17

Optical polarization demultiplexing for a coherent-detection scheme

#303

20140193152

2014-07-10

Signal transmission method, signal receiving method, passive optical network PON device, and PON system

#304

20140186024

2014-07-03

Optical receiver having a MIMO equalizer

#305

20140178081

2014-06-26

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

#306

20140147111

2014-05-29

Level equalization to compensate for implementation impairments in optical communication systems with high-order modulations

#307

20140119731

2014-05-01

Optical receiver, optical reception method and optical reception system

#308

20140099108

2014-04-10

System and method for heterodyne coherent detection with optimal offset

#309

20140064725

2014-03-06

High bandwidth demodulator system and method

#310

20140050477

2014-02-20

Method of optical data transmission using polarization division multiplexing

#311

20140050233

2014-02-20

Method and apparatus for heterodyne coherent detection

#312

20140044440

2014-02-13

Optical reception method and optical receiver using maximal-ratio-combining method

#313

20140037291

2014-02-06

Butterfly filter coefficient setting method and device, receiver and receiving method

#314

20140029959

2014-01-30

Digital coherent receiving apparatus

#315

20140023359

2014-01-23

Receiver and failure detection method for receiver

#316

20140003813

2014-01-02

Forward error correction for an optical transport system

#317

20130336654

2013-12-19

Optical receiver, polarization demultiplexer, and optical receiving method

#318

20130287398

2013-10-31

Multi-channel optical transceiver with offset quadrature amplitude modulation

#319

20130286847

2013-10-31

Optical communication link employing coherent detection and out of band channel identification

#320

20130259478

2013-10-03

Optical transmitter, optical receiver, and optical transmission method

#321

20130236172

2013-09-12

Coherent optical receiver device and coherent optical receiving method

#322

20130216239

2013-08-22

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

#323

20130202021

2013-08-08

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

#324

20130183034

2013-07-18

Method and apparatus of using digital equalizer for cascaded wavelength selective switch compensation

#325

20130177316

2013-07-11

OPTICAL COMMUNICATION SYSTEM, AND TRANSMITTER AND RECEIVER APPARATUS THEREFOR

#326

20130170843

2013-07-04

Optical coherent receiver with local oscillator laser having hybrid cavity

#327

20130156424

2013-06-20

Apparatus for measuring performance of coherent optical receiver

#328

20130089339

2013-04-11

System, method and apparatus for high-sensitivity optical detection

#329

20130077980

2013-03-28

Optical receiver

#330

20130045015

2013-02-21

METHOD AND ARRANGEMENT FOR SIGNAL PROCESSING IN A COMMUNICATION SYSTEM

#331

20120308234

2012-12-06

Clock recovery method and clock recovery arrangement for coherent polarization multiplex receivers

#332

20120308233

2012-12-06

Receiver and cross phase modulation reduction method

#333

20120294629

2012-11-22

Method for improving the performance of digital coherent optical receiver using single ended photo-detection

#334

20120257896

2012-10-11

Coded multidimensional pulse amplitude modulation for ultra-high-speed optical transport

#335

20120237221

2012-09-20

Coherent optical signal processing

#336

20120237206

2012-09-20

System and method for reducing interference of a polarization multiplexed signal

#337

20120235024

2012-09-20

Coherent optical signal processing

#338

20120230676

2012-09-13

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

#339

20120224812

2012-09-06

90-degree hybrid

#340

20120224184

2012-09-06

Optical detector for detecting optical signal beams, method to detect optical signals, and use of an optical detector to detect optical signals

#341

20120213510

2012-08-23

Skew estimator, skew compensator and coherent receiver

#342

20120207474

2012-08-16

PLC-type demodulator and optical transmission system

#343

20120183303

2012-07-19

MULTILEVEL MODULATED OPTICAL TRANSCEIVER AND MULTILEVEL MODULATED OPTICAL TRANSMITTING/RECEIVING METHOD

#344

20120177156

2012-07-12

Clock recovery apparatus

#345

20120148235

2012-06-14

CONTROL CIRCUIT, COMMUNICATION SYSTEM, AND CONTROL METHOD

#346

20120141116

2012-06-07

Method and device for recovering OTUk frame, and system for transporting OTUk frame

#347

20120134685

2012-05-31

Loop filter

#348

20120134684

2012-05-31

Adaptive equalizer, optical receiver, and tap coefficient correcting method

#349

20120134676

2012-05-31

Polarization-multiplexed optical transmission system, polarization-Multiplexed optical transmitter, and polarization-multiplexed optical receiver

#350

20120121274

2012-05-17

Clock recovery for optical transmission systems

#351

20120093457

2012-04-19

Optical 90-degree hybrid circuit

#352

20120082464

2012-04-05

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

#353

20120076507

2012-03-29

Single pin coherent receiver

#354

20120070149

2012-03-22

Coherent optical receiving apparatus and optical signal processing method

#355

20120069854

2012-03-22

COHERENT OPTICAL RECEIVER AND CONTROL METHOD THEREOF

#356

20120039606

2012-02-16

Low power optical transceiver using orthogonal polarization detection technique

#357

20120014691

2012-01-19

Calibrating an optical downconverter

#358

20120008951

2012-01-12

Demodulator and optical transceiver

#359

20120002979

2012-01-05

Method and apparatus for polarization-division-multiplexed optical receivers

#360

20110318005

2011-12-29

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

#361

20110310951

2011-12-22

Computationally-efficient MIMO equalization algorithm for high-speed, real-time, adaptive polarization multiplexed (POLMUX) OFDM transmission with direct detection

#362

20110255870

2011-10-20

Optical transceivers for use in fiber optic communication networks

#363

20110249981

2011-10-13

Coherent optical receiver systems and methods

#364

20110249976

2011-10-13

Polarization diversity optical system device, demodulator and transceiver

#365

20110249971

2011-10-13

Polarization fluctuation compensation device and optical communication system

#366

20110243561

2011-10-06

Filter, coherent receiver device and coherent receiving method

#367

20110236025

2011-09-29

SUB-RATE SAMPLING IN COHERENT OPTICAL RECEIVERS

#368

20110206095

2011-08-25

Identification, alignment and cross polarization optimization for orthogonal polarized transmission and relay systems

#369

20110176815

2011-07-21

Multi-channel optical transceiver with offset quadrature amplitude modulation

#370

20110170690

2011-07-14

Secure orthogonal frequency multiplexed optical communications

#371

20110150503

2011-06-23

Receiver algorithms for coherent detection of polarization-multiplexed optical signals

#372

20110129230

2011-06-02

OPTICAL TRANSMISSION APPARATUSES, METHODS, AND SYSTEMS

#373

20110097092

2011-04-28

Optical receiver having fractional sampling

#374

20110069975

2011-03-24

Digital coherent detection of multi-carrier optical signal

#375

20110064422

2011-03-17

POLARIZATION SPLITTER, OPTICAL HYBRID AND OPTICAL RECEIVER INCLUDING THE SAME

#376

20110033182

2011-02-10

Spectral efficiency estimation in coherent receivers

#377

20110019994

2011-01-27

High bandwidth demodulator system and method

#378

20100329698

2010-12-30

Signal processing circuit, optical receiver, detector and method for compensating for waveform distortion

#379

20100329697

2010-12-30

Digital coherent receiving apparatus

#380

20100329670

2010-12-30

Receiver for optical transverse-mode-multiplexed signals

#381

20100316393

2010-12-16

Method and apparatus for reception of optical signals

#382

20100310256

2010-12-09

PARALLEL OPTICAL RECEIVER FOR OPTICAL SYSTEMS

#383

20100260504

2010-10-14

Optical transmission system

#384

20100254718

2010-10-07

Optical receiver and method for optical reception

#385

20100232805

2010-09-16

Local oscillator frequency offset compensation in a coherent optical signal receiver

#386

20100232788

2010-09-16

Dual stage carrier phase estimation in a coherent optical signal receiver

#387

20100221020

2010-09-02

Adaptive polarization tracking and equalization in coherent optical receivers

#388

20100215357

2010-08-26

Optical sampling with coherent detection

#389

20100189445

2010-07-29

Optical communication system and optical receiver

#390

20100178065

2010-07-15

Delay processing apparatus, signal amplification apparatus, opto-electric conversion apparatus, analog-digital conversion apparatus, receiving apparatus, and receiving method

#391

20100178056

2010-07-15

Multi-wavelength coherent receiver with a shared optical hybrid and a multi-wavelength local oscillator

#392

20100158521

2010-06-24

OPTICAL MIXER FOR COHERENT DETECTION OF POLARIZATION-MULTIPLEXED SIGNALS

#393

20100142971

2010-06-10

APPARATUS FOR SYNCHRONIZING DIGITAL SIGNALS OF COHERENT OPTICAL RECEIVER

#394

20100135656

2010-06-03

OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATIONS WITH NONLINEARITY COMPENSATION

#395

20100098411

2010-04-22

Optical receiver and optical receiving method

#396

20100074632

2010-03-25

Method for improving the performance of digital coherent optical receiver using single ended photo-detection

#397

20100054761

2010-03-04

Monolithic coherent optical detectors

#398

20100028024

2010-02-04

Secure optical communications system and method with coherent detection

#399

20100021163

2010-01-28

METHOD AND SYSTEM FOR POLARIZATION SUPPORTED OPTICAL TRANSMISSION

#400

20100003028

2010-01-07

Filter coefficient adjustment apparatus

#401

20090274470

2009-11-05

Optical code communication system

#402

20090190929

2009-07-30

Optical orthogonal frequency division multiplexed communications with nonlinearity compensation

#403

20090185810

2009-07-23

Single chip two-polarization quadrature synthesizer, analyser and optical communications system using the same

#404

20090142077

2009-06-04

Coherent optical detection and signal processing method and system

#405

20090142064

2009-06-04

Coherent optical detection and signal processing method and system

#406

20090142051

2009-06-04

Coherent optical detector and coherent communication system and method

#407

20090103931

2009-04-23

Systems and methods for the coherent non-differential detection of optical communication signals

#408

20090060511

2009-03-05

Coherent optical receiver

#409

20090047030

2009-02-19

Coherent light receiving system

#410

20080159758

2008-07-03

Optical orthogonal frequency division multiplexed communications with coherent detection

#411

20080152362

2008-06-26

Adaptive polarization tracking and equalization in coherent optical receivers

#412

20080145066

2008-06-19

Coherent optical receiver

#413

20070297806

2007-12-27

System and method for receiving coherent, polarization-multiplexed optical signals

#414

20070274733

2007-11-29

Coherent optical detector and coherent communication system and method

#415

20070154221

2007-07-05

Frequency agile transmitter and receiver architecture for DWDM systems

#416

20070147850

2007-06-28

Digital Compensation for Optical Transmission System

#417

20070110362

2007-05-17

Coherent optical detector and coherent communication system and method

#418

20050259907

2005-11-24

Polarization diverse optical receiver using a polarization-dependent beam splitter

#419

18794785

2025-06-17

Coherent light receiving optical device

#420

18383149

2025-02-18

Systems and methods for optical wireless communication

#421

18370492

2024-01-30

Polarization independent DQPSK demodulation integrated optical chip

#422

18211651

2024-03-05

Self-coherent receiver based on polarization-independent delay interferometers

#423

17952022

2025-08-19

Redundancy links, resiliency architectures, and protection methods for passive optical networks

#424

17861613

2024-01-02

Systems and methods for carrier phase recovery

#425

17832841

2023-03-14

Frequency and bandwidth agile optical bench

#426

17689634

2025-01-07

Differential differencing transimpedance amplifier for coherent applications

#427

17665945

2022-12-06

System and method for phase noise compensation in fibered optical paths

#428

17450194

2023-01-10

Optical transmission systems, receivers, and devices, and methods of combining and receiving optical signals

#429

17384403

2023-10-31

Systems and methods for optical wireless communication

#430

17379853

2023-06-13

Radio frequency—free space optical hybrid transceivers

#431

17077906

2022-07-12

Systems and methods for carrier phase recovery

#432

16698514

2020-11-03

Method for cavity tuning using reflected signal measurement

#433

16402558

2020-07-14

Optical coherent receiver

#434

16290854

2020-07-14

Recovery of phase-modulated data from an optical signal via intensity measurements

#435

15688033

2018-06-05

Front end characterization of coherent receiver

#436

15449884

2018-01-16

Channel diagnostics based on equalizer coefficients

#437

14993484

2017-05-09

Coherent optical receiver

#438

14985754

2017-08-29

Front end characterization of coherent receiver