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 PDF

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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
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WO
WIPO (PCT)
Prior art keywords
generating device
amplitude modulation
quadrature amplitude
signal
signal generating
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.)
Ceased
Application number
PCT/JP2008/000124
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English (en)
French (fr)
Inventor
Tetsuya Kawanishi
Takahide Sakamoto
Akito Chiba
Masahiro Tsuchiya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Information and Communications Technology
Original Assignee
National Institute of Information and Communications Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Institute of Information and Communications Technology filed Critical National Institute of Information and Communications Technology
Priority to US12/678,491 priority Critical patent/US8676060B2/en
Priority to EP08702856.9A priority patent/EP2197165B1/en
Publication of WO2009037794A1 publication Critical patent/WO2009037794A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04B10/501—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
    • 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。 　
PCT/JP2008/000124 2007-09-18 2008-01-31 直交振幅変調信号発生装置 Ceased WO2009037794A1 (ja)

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
JP2007240478 2007-09-18
JP2007-240478 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

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000124 Ceased 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)

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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

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Cited By (6)

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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
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JP2011043575A (ja) * 2009-08-19 2011-03-03 Nippon Telegr & Teleph Corp <Ntt> 光変調器
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Also Published As

Publication number Publication date
EP2197165B1 (en) 2018-09-26
US20100202785A1 (en) 2010-08-12
EP2197165A1 (en) 2010-06-16
JP2009094988A (ja) 2009-04-30
US8676060B2 (en) 2014-03-18
JP5168685B2 (ja) 2013-03-21
EP2197165A4 (en) 2014-07-23

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