CN100481824C - 光通信的改进 - Google Patents
光通信的改进 Download PDFInfo
- Publication number
- CN100481824C CN100481824C CNB018227465A CN01822746A CN100481824C CN 100481824 C CN100481824 C CN 100481824C CN B018227465 A CNB018227465 A CN B018227465A CN 01822746 A CN01822746 A CN 01822746A CN 100481824 C CN100481824 C CN 100481824C
- Authority
- CN
- China
- Prior art keywords
- phase
- light
- optical
- modulated
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
- H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
- H04B10/5561—Digital phase modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03343—Arrangements at the transmitter end
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
d<sub>1</sub>(t) | d<sub>2</sub>(t) | d<sub>i</sub> | △?<sub>i</sub>(d<sub>i</sub>) |
0011 | 0101 | 0123 | 0p/2p3p/2 |
Claims (15)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0031386.6 | 2000-12-21 | ||
GB0031386A GB2370473B (en) | 2000-12-21 | 2000-12-21 | Improvements in or relating to optical communication |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1491510A CN1491510A (zh) | 2004-04-21 |
CN100481824C true CN100481824C (zh) | 2009-04-22 |
Family
ID=9905690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB018227465A Expired - Lifetime CN100481824C (zh) | 2000-12-21 | 2001-12-18 | 光通信的改进 |
Country Status (8)
Country | Link |
---|---|
US (3) | US7546041B2 (zh) |
EP (3) | EP2278762B1 (zh) |
JP (3) | JP4558271B2 (zh) |
CN (1) | CN100481824C (zh) |
AU (1) | AU2002222266A1 (zh) |
CA (1) | CA2432007A1 (zh) |
GB (1) | GB2370473B (zh) |
WO (1) | WO2002051041A2 (zh) |
Families Citing this family (150)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030007216A1 (en) * | 2001-06-21 | 2003-01-09 | Chraplyvy Andrew Roman | Long haul transmission in a dispersion managed optical communication system |
GB2383706B (en) | 2001-11-30 | 2005-03-30 | Marconi Optical Components Ltd | Modulation control |
GB2383707B (en) * | 2001-11-30 | 2005-03-30 | Marconi Optical Components Ltd | Photonic encoder |
GB2383705B (en) * | 2001-11-30 | 2005-03-30 | Marconi Optical Components Ltd | Optical coding system |
US20040208646A1 (en) * | 2002-01-18 | 2004-10-21 | Seemant Choudhary | System and method for multi-level phase modulated communication |
GB2385144B (en) * | 2002-01-23 | 2006-02-08 | Marconi Optical Components Ltd | Optical signal demodulators |
US7277645B2 (en) * | 2002-03-14 | 2007-10-02 | Lucent Technologies Inc. | High-bit-rate long-haul fiber optic communication system techniques and arrangements |
JP4047099B2 (ja) * | 2002-08-20 | 2008-02-13 | 富士通株式会社 | 時分割多重信号光の分離装置、並びに、それを用いた光受信装置および光伝送システム |
US7382984B2 (en) | 2002-10-03 | 2008-06-03 | Nortel Networks Limited | Electrical domain compensation of optical dispersion in an optical communications system |
EP1411658A3 (en) * | 2002-10-15 | 2005-08-03 | Alcatel | Optical MSK transmitter |
US7190908B2 (en) * | 2002-10-28 | 2007-03-13 | The Boeing Company | Optical differential quadrature phase-shift keyed decoder |
US8050351B2 (en) * | 2003-07-02 | 2011-11-01 | Celight, Inc. | Quadrature modulator with feedback control and optical communications system using the same |
JP3829198B2 (ja) * | 2003-12-01 | 2006-10-04 | 独立行政法人情報通信研究機構 | 光伝送方法及びシステム |
DE102004021816A1 (de) * | 2004-04-30 | 2005-11-24 | Universität Stuttgart | Gerät und Methode zur optischen achtstufigen differentiellen Phasenumtastung (8-DPSK) |
US7317845B2 (en) * | 2004-06-23 | 2008-01-08 | Lucent Technologies Inc. | Optical modulator having reduced bandwidth requirements and method of operation thereof |
US7433604B1 (en) * | 2004-07-21 | 2008-10-07 | University Of Central Florida Research Foundation, Inc. | Direct-detection optical differential 8-level phase shift keying (OD8PSK) for spectrally efficient transmission |
JP2006039037A (ja) * | 2004-07-23 | 2006-02-09 | Mitsubishi Electric Corp | 半導体光遅延干渉器 |
JP3920297B2 (ja) * | 2004-09-01 | 2007-05-30 | 富士通株式会社 | 光スイッチおよび光スイッチを利用した光波形モニタ装置 |
DE102004047028A1 (de) * | 2004-09-28 | 2006-04-20 | Siemens Ag | Verfahren und Anordnung zur optischen Übertragung von Datensignalen mittels differentieller Phasenmodulation in einem Polarisations-Multiplexverfahren |
US7676161B2 (en) * | 2004-12-10 | 2010-03-09 | Nortel Networks Limited | Modulation E-field based control of a non-linear transmitter |
JP4170298B2 (ja) * | 2005-01-31 | 2008-10-22 | 富士通株式会社 | 差分4位相偏移変調方式に対応した光受信器および光受信方法 |
JP4675796B2 (ja) * | 2005-02-15 | 2011-04-27 | 日本電信電話株式会社 | 自動分散補償型光伝送システム |
JP4727493B2 (ja) * | 2006-04-20 | 2011-07-20 | 富士通株式会社 | 光信号受信装置及び光信号受信制御方法 |
JP2006245647A (ja) | 2005-02-28 | 2006-09-14 | Fujitsu Ltd | 差動位相偏移変調方式に対応した送信器及びトランスポンダ |
US7689133B2 (en) | 2005-02-28 | 2010-03-30 | Fujitsu Limited | Optical signal reception device and method of controlling optical signal reception |
JP4589836B2 (ja) * | 2005-02-28 | 2010-12-01 | 富士通株式会社 | 光信号受信装置 |
US7389055B1 (en) | 2005-03-17 | 2008-06-17 | Nortel Networks Limited | DQPSK receiver phase control |
JP4561443B2 (ja) * | 2005-03-31 | 2010-10-13 | 富士通株式会社 | M相差分位相偏移変調方式に対応した光受信器 |
JP4710387B2 (ja) * | 2005-04-06 | 2011-06-29 | 富士通株式会社 | 差分m位相偏移変調方式に対応した光受信器および光受信方法 |
JP4602148B2 (ja) * | 2005-04-12 | 2010-12-22 | 三菱電機株式会社 | 光受信器 |
US20060263097A1 (en) * | 2005-05-23 | 2006-11-23 | Fujitsu Limited | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them |
JP4922594B2 (ja) | 2005-05-23 | 2012-04-25 | 富士通株式会社 | 光送信装置、光受信装置、およびそれらを含む光通信システム |
JP4466861B2 (ja) | 2005-06-27 | 2010-05-26 | 横河電機株式会社 | Qpsk光変調装置 |
CN1893324A (zh) * | 2005-07-08 | 2007-01-10 | 富士通株式会社 | 光dqpsk接收机的相位监测装置、相位控制装置及其方法 |
KR100640509B1 (ko) * | 2005-08-01 | 2006-10-30 | 삼성전자주식회사 | 단측파대 변조 모듈 |
JP4440855B2 (ja) * | 2005-08-25 | 2010-03-24 | 富士通株式会社 | Rz−dpsk光受信回路 |
JP4516501B2 (ja) | 2005-08-25 | 2010-08-04 | 富士通オプティカルコンポーネンツ株式会社 | Dqpsk光受信回路 |
JP4516907B2 (ja) | 2005-08-26 | 2010-08-04 | 富士通株式会社 | 光受信装置およびその制御方法 |
JP4422661B2 (ja) * | 2005-08-31 | 2010-02-24 | 富士通株式会社 | 差動4位相偏移変調器の駆動電圧設定方法 |
JP4437985B2 (ja) | 2005-08-31 | 2010-03-24 | 富士通株式会社 | 多値差動光信号受信器 |
JP4657860B2 (ja) | 2005-09-16 | 2011-03-23 | 富士通株式会社 | 光送信装置および光通信システム |
JP4440864B2 (ja) | 2005-09-26 | 2010-03-24 | 富士通株式会社 | 光受信装置 |
JP4816969B2 (ja) * | 2005-10-05 | 2011-11-16 | 日本電気株式会社 | 光受信器、光通信システム及び方法 |
US7526210B2 (en) * | 2005-10-08 | 2009-04-28 | Alcatel-Lucent Usa Inc. | Optical demodulating apparatus and method |
JP4752469B2 (ja) | 2005-11-30 | 2011-08-17 | 横河電機株式会社 | 復調器 |
JP4781094B2 (ja) | 2005-11-30 | 2011-09-28 | 富士通株式会社 | 光送信装置 |
JP4695500B2 (ja) * | 2005-12-02 | 2011-06-08 | 富士通株式会社 | 信号再生装置,光受信装置および信号処理方法 |
JP4768421B2 (ja) * | 2005-12-06 | 2011-09-07 | 富士通株式会社 | Dqpsk光受信器 |
JP4767676B2 (ja) * | 2005-12-12 | 2011-09-07 | 三菱電機株式会社 | 光受信装置 |
US20070206898A1 (en) * | 2006-01-03 | 2007-09-06 | Nec Laboratories America | Optical equalization filtering of dwdm channels |
JP4695989B2 (ja) | 2006-01-27 | 2011-06-08 | 富士通株式会社 | 差動m位相偏移変調信号の復調用干渉計 |
JP4563944B2 (ja) | 2006-01-31 | 2010-10-20 | 富士通株式会社 | 光送信器 |
WO2007088636A1 (ja) | 2006-02-03 | 2007-08-09 | Fujitsu Limited | 光変調器の駆動回路 |
US7623796B2 (en) * | 2006-02-27 | 2009-11-24 | Alcatel-Lucent Usa Inc. | Data-aided multi-symbol phase estimation for optical differential multilevel phase-shift keying signals |
JP2007240389A (ja) | 2006-03-09 | 2007-09-20 | Fujitsu Ltd | 光波形測定装置および光波形測定方法 |
CN101043269B (zh) * | 2006-03-22 | 2011-01-05 | 富士通株式会社 | I-q正交调制发射机及其i-q路间相位偏置的监测装置和方法 |
JP4708241B2 (ja) * | 2006-03-28 | 2011-06-22 | 三菱電機株式会社 | 分散予等化光送信器 |
JP2007274235A (ja) | 2006-03-30 | 2007-10-18 | Fujitsu Ltd | 光dqpsk受信器 |
JP5287239B2 (ja) * | 2006-03-31 | 2013-09-11 | 富士通株式会社 | 差動4位相偏移変調器およびその位相シフト量制御方法 |
JP4678653B2 (ja) | 2006-05-09 | 2011-04-27 | 富士通株式会社 | 光送信装置 |
JP4655996B2 (ja) | 2006-05-12 | 2011-03-23 | 横河電機株式会社 | 遅延干渉計及び復調器 |
JP4531010B2 (ja) * | 2006-05-26 | 2010-08-25 | 日本電信電話株式会社 | 光位相変復調回路および光位相変復調方法 |
JP4915147B2 (ja) * | 2006-06-15 | 2012-04-11 | 富士通株式会社 | 位相制御装置および光dqpsk受信機 |
JP2008010971A (ja) | 2006-06-27 | 2008-01-17 | Fujitsu Ltd | 高速分散補償制御装置 |
US7650083B2 (en) * | 2006-06-30 | 2010-01-19 | Fujitsu Limited | Demodulating a signal by performing consecutive beam splitting |
JP4684180B2 (ja) | 2006-06-30 | 2011-05-18 | 富士通株式会社 | 光受信装置 |
JP5040203B2 (ja) | 2006-07-19 | 2012-10-03 | 富士通株式会社 | 光信号受信装置および光信号受信制御方法 |
JP4620642B2 (ja) | 2006-07-31 | 2011-01-26 | 富士通株式会社 | 多値変調受信装置 |
US20090016739A1 (en) * | 2006-07-31 | 2009-01-15 | Nec Laboratories America | Pattern effect reduction of optical signals |
JP4783702B2 (ja) * | 2006-09-15 | 2011-09-28 | 富士通株式会社 | 光受信装置 |
JP4983178B2 (ja) * | 2006-09-15 | 2012-07-25 | 富士通株式会社 | 差動四位相偏移変調光受信回路 |
US9312964B2 (en) * | 2006-09-22 | 2016-04-12 | Alcatel Lucent | Reconstruction and restoration of an optical signal field |
JP5405716B2 (ja) * | 2006-09-29 | 2014-02-05 | 富士通株式会社 | 光送信機 |
JP2008099178A (ja) * | 2006-10-16 | 2008-04-24 | Nippon Telegr & Teleph Corp <Ntt> | 多値光位相変調回路および多値光位相変調伝送システム |
JP5055947B2 (ja) * | 2006-10-20 | 2012-10-24 | 富士通オプティカルコンポーネンツ株式会社 | 光変調器および送信装置 |
JP5055968B2 (ja) | 2006-11-14 | 2012-10-24 | 富士通株式会社 | 差動4位相偏移変調器 |
JP4842100B2 (ja) * | 2006-11-14 | 2011-12-21 | 三菱電機株式会社 | 分散予等化光送信器および光通信システム |
US9214246B2 (en) | 2006-11-28 | 2015-12-15 | Terrapower, Llc | System and method for operating a modular nuclear fission deflagration wave reactor |
US9734922B2 (en) | 2006-11-28 | 2017-08-15 | Terrapower, Llc | System and method for operating a modular nuclear fission deflagration wave reactor |
US9230695B2 (en) | 2006-11-28 | 2016-01-05 | Terrapower, Llc | Nuclear fission igniter |
JP2008141670A (ja) * | 2006-12-05 | 2008-06-19 | Fujitsu Ltd | Dqpsk変調装置、光送信装置およびdqpsk変調方法 |
JP5233115B2 (ja) | 2006-12-22 | 2013-07-10 | 日本電気株式会社 | Dqpsk復調方法を用いた光受信装置およびdqpsk復調方法 |
JP4522417B2 (ja) * | 2007-01-15 | 2010-08-11 | 富士通株式会社 | 光変調装置および光変調方法 |
JP4770741B2 (ja) * | 2007-01-17 | 2011-09-14 | 日本電気株式会社 | 光伝送システム及びその方法並びにそれに用いる光送受信装置 |
JP2008187223A (ja) * | 2007-01-26 | 2008-08-14 | Hitachi Communication Technologies Ltd | 光位相変調器の制御法 |
JP4818142B2 (ja) | 2007-02-06 | 2011-11-16 | 富士通株式会社 | 光受信装置およびその制御方法、並びに、光伝送システム |
JP2008224313A (ja) | 2007-03-09 | 2008-09-25 | Yokogawa Electric Corp | 干渉計及び復調器 |
WO2008118411A1 (en) * | 2007-03-23 | 2008-10-02 | Massachusetts Institute Of Technology | Filter based dpsk receiver |
JP5168973B2 (ja) | 2007-03-27 | 2013-03-27 | 横河電機株式会社 | 干渉計及び復調器並びに分岐素子 |
US20080240736A1 (en) * | 2007-03-28 | 2008-10-02 | Nec Laboratories America, Inc. | Inter-Symbol Interference-Suppressed Colorless DPSK Demodulation |
JP5092827B2 (ja) * | 2007-03-29 | 2012-12-05 | 富士通株式会社 | 光dqpsk受信器及び、異常検出制御方法 |
US20090214224A1 (en) * | 2007-04-03 | 2009-08-27 | Celight, Inc. | Method and apparatus for coherent analog rf photonic transmission |
JP4983466B2 (ja) | 2007-07-30 | 2012-07-25 | 富士通株式会社 | 光変調装置および光変調方法ならびに光送信装置 |
US8605823B2 (en) * | 2007-08-14 | 2013-12-10 | Rambus Inc. | Communication using continuous-phase modulated signals |
JP4934557B2 (ja) | 2007-09-27 | 2012-05-16 | 株式会社日立製作所 | 4値位相変調器 |
EP2209038B1 (en) * | 2007-10-10 | 2014-06-25 | NEC Corporation | Optical modulator and optical communication system |
JP5550825B2 (ja) * | 2007-10-16 | 2014-07-16 | ジェイディーエス ユニフェイズ コーポレーション | モニタリング構造を備えた光位相変調器 |
JP5061855B2 (ja) * | 2007-11-07 | 2012-10-31 | 富士通株式会社 | 電気分散補償装置、光受信装置および光受信方法 |
JP5012457B2 (ja) | 2007-11-30 | 2012-08-29 | 富士通株式会社 | Dqpsk光受信装置 |
JP4973476B2 (ja) | 2007-12-10 | 2012-07-11 | Kddi株式会社 | 光信号品質監視装置 |
MX2007016078A (es) * | 2007-12-14 | 2009-06-15 | Itesm | Modulador y demodulador para un formato de modulación óptico diferencial con ocho cambios de fase. |
US8064768B2 (en) * | 2007-12-19 | 2011-11-22 | Nec Laboratories America, Inc. | Intra-channel equalizing optical interleaver |
WO2009104631A1 (ja) | 2008-02-22 | 2009-08-27 | 日本電気株式会社 | 光通信システム、光通信方法、および光通信装置 |
JP2009200915A (ja) * | 2008-02-22 | 2009-09-03 | Fujitsu Ltd | 光dqpsk受信機、および光dqpsk受信機において使用される光位相モニタ装置 |
JP5487547B2 (ja) * | 2008-02-28 | 2014-05-07 | 富士通株式会社 | 光変調装置および光変調方法 |
JP5088174B2 (ja) * | 2008-02-28 | 2012-12-05 | 富士通株式会社 | 復調回路 |
JP2009232330A (ja) * | 2008-03-25 | 2009-10-08 | Yokogawa Electric Corp | 光受信機 |
US20090252502A1 (en) * | 2008-04-07 | 2009-10-08 | Futurewei Technologies, Inc. | Methods and systems for optical communication |
JP5038219B2 (ja) * | 2008-04-11 | 2012-10-03 | 株式会社日立製作所 | 光受信装置 |
US7962043B2 (en) * | 2008-06-20 | 2011-06-14 | Applied Micro Circuits Corporation | Multichannel optical transport network skew control |
CN101621336B (zh) * | 2008-06-30 | 2012-12-12 | 华为技术有限公司 | 一种差分正交相移键控系统、方法及设备 |
US20110229153A1 (en) * | 2008-10-31 | 2011-09-22 | Hitachi, Ltd | Optical receiver |
JP2010130323A (ja) * | 2008-11-27 | 2010-06-10 | Yokogawa Electric Corp | 光伝送装置 |
JP5264521B2 (ja) | 2009-01-16 | 2013-08-14 | 三菱電機株式会社 | 光送信器 |
JP2010245905A (ja) * | 2009-04-07 | 2010-10-28 | Sony Corp | 送信装置および通信システム |
US8213810B2 (en) * | 2009-06-22 | 2012-07-03 | Agilent Technologies, Inc. | Demodulation of an optical signal under control of a kalman filter |
JP2011022479A (ja) | 2009-07-17 | 2011-02-03 | Mitsubishi Electric Corp | 多値光送信器 |
US9020361B2 (en) * | 2009-09-08 | 2015-04-28 | Nippon Telegraph And Telephone Corporation | Optical signal transmitter, and bias voltage control method |
WO2011045674A1 (en) | 2009-10-16 | 2011-04-21 | Oclaro Technology Limited | Method and system for deploying an optical demodulator arrangement in a communications network |
WO2011084035A2 (en) | 2010-01-11 | 2011-07-14 | Samsung Electronics Co., Ltd. | Ultra-wide band communication apparatus and method |
JP5421792B2 (ja) * | 2010-01-12 | 2014-02-19 | 株式会社日立製作所 | 偏波多重送信器及び伝送システム |
JP5351788B2 (ja) | 2010-01-29 | 2013-11-27 | 富士通テレコムネットワークス株式会社 | 光受信装置および光伝送システム |
JP5482351B2 (ja) | 2010-03-19 | 2014-05-07 | 富士通株式会社 | 光変調装置及び光変調方法 |
JP5263205B2 (ja) * | 2010-03-19 | 2013-08-14 | 富士通株式会社 | 光変調装置及び光変調方法 |
JP5015284B2 (ja) * | 2010-03-30 | 2012-08-29 | 株式会社日立製作所 | 光送信器、光送信方法、及び、光送受信システム |
WO2011146899A1 (en) | 2010-05-20 | 2011-11-24 | Mintera Corporation | Self-adaptive receivers not requiring fec feedback |
US8483574B2 (en) * | 2010-10-15 | 2013-07-09 | Tyco Electronics Subsea Communications, Llc | Correlation-control QPSK transmitter |
GB2485202B (en) | 2010-11-05 | 2017-08-30 | Oclaro Tech Ltd | Demodulator and optical arrangement thereof |
WO2012088669A1 (zh) * | 2010-12-29 | 2012-07-05 | 昂纳信息技术(深圳)有限公司 | 一种mems芯片调节相位的解调器 |
JP5006978B1 (ja) | 2011-03-30 | 2012-08-22 | 株式会社フジクラ | 補償方法、光変調システム、及び光復調システム |
WO2011107055A2 (zh) * | 2011-04-20 | 2011-09-09 | 华为技术有限公司 | 基于微波光子技术的信号接收装置和信号接收方法 |
WO2012157182A1 (ja) | 2011-05-13 | 2012-11-22 | 日本電気株式会社 | 信号同期送信システム、光変調器用同期駆動システム、信号同期送信方法及びそのプログラムが格納された非一時的なコンピュータ可読媒体 |
US8606114B2 (en) | 2011-05-17 | 2013-12-10 | Oclaro Technology Limited | Alignment of a data signal to an alignment signal |
CN102420661B (zh) * | 2011-12-15 | 2014-06-04 | 华中科技大学 | 一种光纤非线性损伤补偿装置 |
JP2013183455A (ja) * | 2012-02-29 | 2013-09-12 | Zte (Usa) Inc | ナイキスト波長分割多重システム |
US8515865B1 (en) * | 2012-05-26 | 2013-08-20 | At&T Intellectual Property I, L.P. | Methods, systems, and products for charging batteries |
EP2688232B1 (en) | 2012-07-19 | 2017-06-14 | Alcatel Lucent | Optical transmitter for transmitting a multilevel amplitude-shift-keying modulated signal |
EP2880764B1 (en) | 2012-08-06 | 2019-10-23 | Skorpios Technologies, Inc. | Method and system for the monolithic integration of circuits for monitoring and control of rf signals |
US9270379B2 (en) * | 2013-03-18 | 2016-02-23 | Nec Laboratories America, Inc. | Optical nyquist superchannel generation using microwave low-pass filtering and optical equalization |
US10171200B2 (en) | 2013-08-27 | 2019-01-01 | Zte Corporation | Optical communication using super-nyquist signals |
JP6446803B2 (ja) * | 2014-03-25 | 2019-01-09 | 日本電気株式会社 | 光送受信器 |
US9838239B2 (en) * | 2015-01-22 | 2017-12-05 | Futurewei Technologies, Inc. | Digital generation of multi-level phase shifting with a Mach-Zehnder modulator (MZM) |
JP6620409B2 (ja) * | 2015-03-11 | 2019-12-18 | 富士通株式会社 | 光送信器、光伝送システム、及び光通信制御方法 |
CN106128406B (zh) * | 2016-09-08 | 2019-01-22 | 京东方科技集团股份有限公司 | 眼图幅值调节方法、数据传输方法、电路和显示装置 |
US10673530B2 (en) * | 2016-10-05 | 2020-06-02 | LGS Innovations LLC Inc. | Free space optical communication system and method |
ES2810723T3 (es) * | 2016-10-08 | 2021-03-09 | Huawei Tech Co Ltd | Procedimiento y dispositivo de ecualización de potencia óptica |
CN107346991B (zh) * | 2017-06-22 | 2019-10-29 | 北京工业大学 | 一种基于相位敏感放大的多路mpsk信号再生方法 |
US10749600B2 (en) * | 2018-04-12 | 2020-08-18 | The Boeing Company | Systems and methods for single optical fiber data transmission |
AT521851A1 (de) * | 2018-11-13 | 2020-05-15 | Ait Austrian Inst Tech Gmbh | Verfahren zur Übertragung von Daten und/oder Informationen |
US11677475B2 (en) * | 2019-04-12 | 2023-06-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Encoding and decoding communications traffic in a pulse amplitude modulation format and optical apparatus for same |
Family Cites Families (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS631220A (ja) * | 1986-06-20 | 1988-01-06 | Toshiba Corp | ロ−ルオフフイルタ |
JPS6352530A (ja) * | 1986-08-22 | 1988-03-05 | Fujitsu Ltd | コヒ−レント光通信用の受信器 |
JPS6386608A (ja) * | 1986-09-30 | 1988-04-18 | Toshiba Corp | ロ−ルオフフイルタ |
JPH069336Y2 (ja) | 1987-06-26 | 1994-03-09 | 株式会社島津製作所 | 電子天びん |
JPS647727A (en) * | 1987-06-30 | 1989-01-11 | Nec Corp | Light transmission equipment |
JPS645127A (en) * | 1987-06-29 | 1989-01-10 | Nec Corp | Optical transmitter |
US4933929A (en) | 1987-06-29 | 1990-06-12 | Nec Corporation | Wavelength multiplexed optical transmitter for generating constant-amplitude angle-modulated beams to eliminate phase noise in adjacent transmission channels |
US4893352A (en) * | 1987-06-30 | 1990-01-09 | Massachusetts Institute Of Technology | Optical transmitter of modulated signals |
JPS647727U (zh) | 1987-07-04 | 1989-01-17 | ||
IT1232056B (it) * | 1989-03-28 | 1992-01-23 | Cselt Centro Studi Lab Telecom | Modulatore veloce della polarizza zione di una portante ottica |
JP2758211B2 (ja) * | 1989-06-19 | 1998-05-28 | 富士通株式会社 | 周波数直接変調psk方式 |
JP2760856B2 (ja) | 1989-08-18 | 1998-06-04 | 富士通株式会社 | マッハツェンダ型光変調器を用いた位相シフトキーイング方式 |
DE69017852T2 (de) | 1989-12-04 | 1995-08-10 | Canon Kk | Optisches Kopplergerät mit wellenlängeselektivem optischem Koppler. |
JP2836050B2 (ja) * | 1989-12-04 | 1998-12-14 | キヤノン株式会社 | 光波長フィルター及びそれを用いた装置 |
JPH03179939A (ja) | 1989-12-08 | 1991-08-05 | Fujitsu Ltd | 多相位相変調器 |
JPH03259632A (ja) * | 1990-03-09 | 1991-11-19 | Fujitsu Ltd | 光ヘテロダイン偏波ダイバーシティ受信器 |
JPH0478235A (ja) * | 1990-07-18 | 1992-03-12 | Fujitsu Ltd | 直接変調psk伝送システム並びに該システムにおける自動周波数制御方法、復調方法及び位相雑音抑圧方法 |
EP0772312A3 (en) * | 1990-09-14 | 1997-09-03 | Fujitsu Ltd | Optical communication system with multiplexed subcarriers |
US5222103A (en) * | 1991-01-02 | 1993-06-22 | Gte Laboratories Incorporated | Differential quadrature phase shift keying encoder for subcarrier systems |
US5101450A (en) * | 1991-01-23 | 1992-03-31 | Gte Laboratories Incorporated | Quadrature optical phase modulators for lightwave systems |
JP3053966B2 (ja) * | 1992-06-01 | 2000-06-19 | キヤノン株式会社 | 方向性結合器フィルタ |
JPH06224852A (ja) * | 1993-01-25 | 1994-08-12 | Matsushita Electric Ind Co Ltd | 光伝送方式 |
JP3179939B2 (ja) | 1993-06-16 | 2001-06-25 | ミサワホーム株式会社 | 化粧石膏ボードの幅詰め方法および化粧石膏ボード |
JP3259632B2 (ja) | 1995-05-31 | 2002-02-25 | カシオ計算機株式会社 | 反強誘電性液晶表示素子 |
JPH09214429A (ja) * | 1996-02-05 | 1997-08-15 | Kokusai Denshin Denwa Co Ltd <Kdd> | 光アクセス方式 |
JP3174503B2 (ja) | 1996-04-01 | 2001-06-11 | 新日本製鐵株式会社 | プレス加工性の優れた表面処理鋼板の製造方法 |
KR100239169B1 (ko) * | 1996-04-04 | 2000-01-15 | 윤종용 | 파이/n 쉬프티트 n차분위상쉬프트키잉 변조신호 발생장치 |
JP3430454B2 (ja) * | 1996-06-27 | 2003-07-28 | 日本電信電話株式会社 | 光波長分割多重伝送装置 |
JP3297325B2 (ja) * | 1996-11-13 | 2002-07-02 | 株式会社東芝 | 光通信装置 |
US6137604A (en) * | 1996-12-04 | 2000-10-24 | Tyco Submarine Systems, Ltd. | Chromatic dispersion compensation in wavelength division multiplexed optical transmission systems |
JP3094950B2 (ja) * | 1997-05-28 | 2000-10-03 | 日本電気株式会社 | 光送信装置及び光送信方法 |
JP4184474B2 (ja) * | 1997-08-22 | 2008-11-19 | 松下電器産業株式会社 | 光伝送システムならびにそれに用いられる光送信装置および光受信装置 |
JPH11220443A (ja) | 1998-01-30 | 1999-08-10 | Nippon Telegr & Teleph Corp <Ntt> | 光送受信方式 |
US6111679A (en) * | 1998-04-21 | 2000-08-29 | Optimight Communications, Inc. | Method and system for optical multichannel transmission using coherence division multiplexing with optical filtering |
JP3371857B2 (ja) * | 1998-07-29 | 2003-01-27 | 日本電信電話株式会社 | 光伝送装置 |
DE69940873D1 (de) | 1998-07-29 | 2009-06-25 | Nippon Telegraph & Telephone | Optisches Übertragungssystem |
JP2000059300A (ja) | 1998-08-06 | 2000-02-25 | Nippon Telegr & Teleph Corp <Ntt> | 光送受信装置 |
JP2000092001A (ja) * | 1998-09-09 | 2000-03-31 | Nippon Telegr & Teleph Corp <Ntt> | 光送信装置 |
JP2000151505A (ja) * | 1998-11-09 | 2000-05-30 | Nippon Telegr & Teleph Corp <Ntt> | 光送受信装置 |
JP2000157505A (ja) | 1998-11-30 | 2000-06-13 | Ge Yokogawa Medical Systems Ltd | テーブル及びmri装置 |
JP2000209162A (ja) * | 1999-01-12 | 2000-07-28 | Hitachi Cable Ltd | 光波長多重用光源 |
US6628728B1 (en) | 1999-04-28 | 2003-09-30 | Cyntrust Communications, Inc. | Nyquist filter and method |
JP3625726B2 (ja) * | 2000-03-06 | 2005-03-02 | 日本電信電話株式会社 | 光伝送装置および光伝送システム |
US6697576B1 (en) * | 2000-07-20 | 2004-02-24 | Northrop Grumman Corporation | Wideband, high-fidelity analog optical link design |
-
2000
- 2000-12-21 GB GB0031386A patent/GB2370473B/en not_active Expired - Lifetime
-
2001
- 2001-12-18 JP JP2002552220A patent/JP4558271B2/ja not_active Expired - Fee Related
- 2001-12-18 EP EP10011560.9A patent/EP2278762B1/en not_active Expired - Lifetime
- 2001-12-18 AU AU2002222266A patent/AU2002222266A1/en not_active Abandoned
- 2001-12-18 WO PCT/GB2001/005624 patent/WO2002051041A2/en active Application Filing
- 2001-12-18 EP EP01271709A patent/EP1344362A2/en not_active Withdrawn
- 2001-12-18 CN CNB018227465A patent/CN100481824C/zh not_active Expired - Lifetime
- 2001-12-18 CA CA002432007A patent/CA2432007A1/en not_active Abandoned
- 2001-12-18 EP EP10012232.4A patent/EP2278763B1/en not_active Expired - Lifetime
- 2001-12-18 US US10/451,464 patent/US7546041B2/en not_active Expired - Lifetime
-
2009
- 2009-06-08 US US12/480,573 patent/US8213806B2/en not_active Expired - Fee Related
-
2010
- 2010-03-15 JP JP2010057452A patent/JP5059155B2/ja not_active Expired - Fee Related
- 2010-03-15 JP JP2010057453A patent/JP5005786B2/ja not_active Expired - Lifetime
- 2010-10-04 US US12/897,172 patent/US8200099B2/en not_active Expired - Fee Related
Non-Patent Citations (4)
Title |
---|
A TWO-CHANNEL OPTICAL DOWNCONVERTER FORPHASE DETECTION. BIERNACKI P D ET AL.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,Vol.46 No.11. 1998 |
A TWO-CHANNEL OPTICAL DOWNCONVERTER FORPHASE DETECTION. BIERNACKI P D ET AL.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,Vol.46 No.11. 1998 * |
Fiber distribution for 80 compressed digital video channelsusing differential QPSK. JOYCE G R ET AL.PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMMUNICATIONS(ICC),Vol.3 . 1993 |
Fiber distribution for 80 compressed digital video channelsusing differential QPSK. JOYCE G R ET AL.PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMMUNICATIONS(ICC),Vol.3. 1993 * |
Also Published As
Publication number | Publication date |
---|---|
JP5005786B2 (ja) | 2012-08-22 |
JP2010136457A (ja) | 2010-06-17 |
CN1491510A (zh) | 2004-04-21 |
US7546041B2 (en) | 2009-06-09 |
US20090245814A1 (en) | 2009-10-01 |
EP2278763A2 (en) | 2011-01-26 |
WO2002051041A3 (en) | 2002-10-17 |
WO2002051041A2 (en) | 2002-06-27 |
JP2010154559A (ja) | 2010-07-08 |
JP2004516743A (ja) | 2004-06-03 |
CA2432007A1 (en) | 2002-06-27 |
GB2370473A (en) | 2002-06-26 |
GB0031386D0 (en) | 2001-02-07 |
US8213806B2 (en) | 2012-07-03 |
EP2278762B1 (en) | 2016-09-28 |
US20040081470A1 (en) | 2004-04-29 |
JP5059155B2 (ja) | 2012-10-24 |
EP1344362A2 (en) | 2003-09-17 |
AU2002222266A1 (en) | 2002-07-01 |
EP2278762A2 (en) | 2011-01-26 |
EP2278763B1 (en) | 2016-05-11 |
US8200099B2 (en) | 2012-06-12 |
EP2278763A3 (en) | 2012-09-26 |
US20110020013A1 (en) | 2011-01-27 |
GB2370473B (en) | 2004-04-07 |
EP2278762A3 (en) | 2012-09-26 |
JP4558271B2 (ja) | 2010-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100481824C (zh) | 光通信的改进 | |
US7116460B2 (en) | Modulation control | |
US7327961B2 (en) | Differential encoder for an optical DQPSK modulator | |
US7398022B2 (en) | Optical return-to-zero phase-shift keying with improved transmitters | |
Wree et al. | RZ-DQPSK format with high spectral efficiency and high robustness towards fiber nonlinearities | |
US7035486B2 (en) | Photonic integrated device | |
CN101459638B (zh) | 差分正交相移键控dqpsk信号的接收装置及方法 | |
US20090136241A1 (en) | Optical msk data format | |
CN101895495A (zh) | 正交双偏振差分四相相移键控发射与接收的方法及其系统 | |
CN101621336A (zh) | 一种差分正交相移键控系统、方法及设备 | |
US7925169B2 (en) | Photonic encoder | |
CN101902422B (zh) | 一种高速光msk调制系统及调制方法 | |
Barjoei | Modulation assessment/limits, BER and spectral efficiency for photonic transmission in optical communication system, DWDM |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: OCLARO TECHNOLOGY LTD. Free format text: FORMER NAME: OCLARO TECHNOLOGY PLC Owner name: OCLARO TECHNOLOGY PLC Free format text: FORMER NAME: BOOKHAM TECHNOLOGY PLC |
|
CP01 | Change in the name or title of a patent holder |
Address after: The British county of Northampton Patentee after: OCLARO TECHNOLOGY Ltd. Address before: The British county of Northampton Patentee before: OCLARO TECHNOLOGY PLC Address after: The British county of Northampton Patentee after: OCLARO TECHNOLOGY PLC Address before: The British county of Northampton Patentee before: Bookham Technology PLC |
|
CX01 | Expiry of patent term |
Granted publication date: 20090422 |
|
CX01 | Expiry of patent term |