WO2009037794A1 - 直交振幅変調信号発生装置 - Google Patents
直交振幅変調信号発生装置 Download PDFInfo
- Publication number
- WO2009037794A1 WO2009037794A1 PCT/JP2008/000124 JP2008000124W WO2009037794A1 WO 2009037794 A1 WO2009037794 A1 WO 2009037794A1 JP 2008000124 W JP2008000124 W JP 2008000124W WO 2009037794 A1 WO2009037794 A1 WO 2009037794A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- generating device
- amplitude modulation
- quadrature amplitude
- signal
- signal generating
- Prior art date
Links
Classifications
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- 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
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
- H04B10/5053—Laser transmitters using external modulation using a parallel, i.e. shunt, combination of modulators
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- 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
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
-
- 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
- H04B10/54—Intensity modulation
- H04B10/541—Digital intensity or amplitude modulation
-
- 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
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2096—Arrangements for directly or externally modulating an optical carrier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/38—Demodulator circuits; Receiver circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Optical Communication System (AREA)
Abstract
【課題】 本発明は,多レベルの電気信号を扱うことなく,QAM信号を得ることができる直交振幅変調信号発生装置を提供することを目的とする。 【解決手段】 本発明は,基本的には,4つの並列したMZM(QPMZM)など並列した複数のMZMを用いることで,多レベルの電気信号を扱うことなく,直交振幅変調(QAM)信号を得ることができるQAM発生装置を提供できるという知見に基づくものである。具体的には,第1の導波路(2)と,前記第1の導波路(2)に設けられた第1の4相位相シフトキーイング(QPSK)信号発生器(3)と,前記第1の導波路(2)との合波点(4)を有する第2の導波路(5)と,前記第2の導波路(5)に設けられた第2のQPSK信号発生器(6)と,を具備する,QAM信号発生装置などに関する。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/678,491 US8676060B2 (en) | 2007-09-18 | 2008-01-31 | Quadrature amplitude modulation signal generating device |
EP08702856.9A EP2197165B1 (en) | 2007-09-18 | 2008-01-31 | Efficient QAM signal generation |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-240478 | 2007-09-18 | ||
JP2007240478 | 2007-09-18 | ||
JP2007-285782 | 2007-11-02 | ||
JP2007285782A JP5168685B2 (ja) | 2007-09-18 | 2007-11-02 | 直交振幅変調信号発生装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009037794A1 true WO2009037794A1 (ja) | 2009-03-26 |
Family
ID=40467624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/000124 WO2009037794A1 (ja) | 2007-09-18 | 2008-01-31 | 直交振幅変調信号発生装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8676060B2 (ja) |
EP (1) | EP2197165B1 (ja) |
JP (1) | JP5168685B2 (ja) |
WO (1) | WO2009037794A1 (ja) |
Cited By (6)
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JP2010237497A (ja) * | 2009-03-31 | 2010-10-21 | Sumitomo Osaka Cement Co Ltd | 光変調器 |
JP2010239272A (ja) * | 2009-03-30 | 2010-10-21 | Panasonic Corp | Ofdm送信装置、ofdm受信装置、ofdm伝送システム及びofdm通信方法 |
JP2010250125A (ja) * | 2009-04-16 | 2010-11-04 | Nippon Telegr & Teleph Corp <Ntt> | 光変調器 |
JP2011028014A (ja) * | 2009-07-27 | 2011-02-10 | Fujitsu Optical Components Ltd | 光デバイスおよび光送信機 |
JP2011043575A (ja) * | 2009-08-19 | 2011-03-03 | Nippon Telegr & Teleph Corp <Ntt> | 光変調器 |
JP2012247797A (ja) * | 2012-08-13 | 2012-12-13 | Sumitomo Osaka Cement Co Ltd | 光変調器 |
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JP5168685B2 (ja) * | 2007-09-18 | 2013-03-21 | 独立行政法人情報通信研究機構 | 直交振幅変調信号発生装置 |
JP5035075B2 (ja) * | 2008-03-31 | 2012-09-26 | 富士通株式会社 | 光変調器の制御方法および制御装置 |
US8903253B2 (en) * | 2008-07-31 | 2014-12-02 | Telefonaktiebolaget L M Ericsson (Publ) | Optical signal modulation |
US8072669B2 (en) * | 2009-09-02 | 2011-12-06 | At&T Intellectual Property I, L.P. | Methods and apparatus for generating 16-QAM-modulated optical signal |
KR101382619B1 (ko) * | 2009-07-24 | 2014-04-07 | 한국전자통신연구원 | 광 송신 장치 및 방법과 광 수신 장치 및 방법 |
JP5195677B2 (ja) * | 2009-07-28 | 2013-05-08 | 富士通株式会社 | 光信号送信装置および偏波多重光信号の制御方法 |
US8643929B2 (en) | 2010-01-12 | 2014-02-04 | Alcatel Lucent | Nested Mach-Zehnder modulator |
JP5757557B2 (ja) * | 2010-02-26 | 2015-07-29 | 国立研究開発法人情報通信研究機構 | バイアス点調整が可能な複数のマッハツェンダー構造を有する光変調器 |
JP5577778B2 (ja) * | 2010-03-18 | 2014-08-27 | 沖電気工業株式会社 | 光多値信号生成装置及び方法 |
WO2012034074A2 (en) * | 2010-09-09 | 2012-03-15 | Zte (Usa) Inc. | 16-qam optical signal generation |
JPWO2012077337A1 (ja) | 2010-12-06 | 2014-05-19 | 日本電気株式会社 | 光信号制御装置及び光信号制御方法 |
JP5462196B2 (ja) * | 2011-01-28 | 2014-04-02 | 日本電信電話株式会社 | 光変調器 |
JP2015501945A (ja) * | 2011-11-11 | 2015-01-19 | ギグオプティックス, インコーポレイテッド | 二偏波直交変調器 |
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WO2013177012A1 (en) * | 2012-05-25 | 2013-11-28 | Corning Incorporated | Systems for differential optical signaling |
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US8849129B2 (en) * | 2012-07-20 | 2014-09-30 | Finisar Corporation | Method and apparatus for stabilization of optical transmitter |
US8923706B2 (en) * | 2012-07-24 | 2014-12-30 | Alcatel Lucent | Frequency equalization for an optical transmitter |
JPWO2014051096A1 (ja) * | 2012-09-28 | 2016-08-25 | 住友大阪セメント株式会社 | 光変調器及び光変調方法 |
KR101490999B1 (ko) * | 2013-08-12 | 2015-02-09 | 한국과학기술원 | 다중대역 주파수와 진폭을 동시에 변조하는 스핀트로닉스 무선통신 시스템 |
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US9385811B2 (en) * | 2013-12-06 | 2016-07-05 | Cable Television Laboratories, Inc | Optical communication systems and methods |
JP6059678B2 (ja) * | 2014-04-11 | 2017-01-11 | 日本電信電話株式会社 | 光変調装置、及び光変調方法 |
KR101596139B1 (ko) * | 2014-05-14 | 2016-02-19 | 엘에스산전 주식회사 | 고전압 직류 송전 시스템의 데이터 처리 장치 및 그 방법 |
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US9838239B2 (en) * | 2015-01-22 | 2017-12-05 | Futurewei Technologies, Inc. | Digital generation of multi-level phase shifting with a Mach-Zehnder modulator (MZM) |
JP6627640B2 (ja) * | 2016-05-16 | 2020-01-08 | 富士通株式会社 | 光送信機 |
CN106100752B (zh) * | 2016-05-23 | 2018-12-28 | 华中科技大学 | 一种光学调制模块 |
WO2020028409A1 (en) * | 2018-07-30 | 2020-02-06 | The Regents Of The University Of California | Transmitter architecture for generating 4n-qam constellation with no digital-to-analog converters (dac) in signal path requirement |
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2007
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2008
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- 2008-01-31 US US12/678,491 patent/US8676060B2/en active Active
- 2008-01-31 EP EP08702856.9A patent/EP2197165B1/en not_active Not-in-force
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010239272A (ja) * | 2009-03-30 | 2010-10-21 | Panasonic Corp | Ofdm送信装置、ofdm受信装置、ofdm伝送システム及びofdm通信方法 |
JP2010237497A (ja) * | 2009-03-31 | 2010-10-21 | Sumitomo Osaka Cement Co Ltd | 光変調器 |
JP2010250125A (ja) * | 2009-04-16 | 2010-11-04 | Nippon Telegr & Teleph Corp <Ntt> | 光変調器 |
JP2011028014A (ja) * | 2009-07-27 | 2011-02-10 | Fujitsu Optical Components Ltd | 光デバイスおよび光送信機 |
JP2011043575A (ja) * | 2009-08-19 | 2011-03-03 | Nippon Telegr & Teleph Corp <Ntt> | 光変調器 |
JP2012247797A (ja) * | 2012-08-13 | 2012-12-13 | Sumitomo Osaka Cement Co Ltd | 光変調器 |
Also Published As
Publication number | Publication date |
---|---|
JP5168685B2 (ja) | 2013-03-21 |
JP2009094988A (ja) | 2009-04-30 |
US20100202785A1 (en) | 2010-08-12 |
EP2197165A4 (en) | 2014-07-23 |
US8676060B2 (en) | 2014-03-18 |
EP2197165B1 (en) | 2018-09-26 |
EP2197165A1 (en) | 2010-06-16 |
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