DE60126479D1 - Vorrichtung zur mehrwertigen Modulation - Google Patents

Vorrichtung zur mehrwertigen Modulation

Info

Publication number
DE60126479D1
DE60126479D1 DE60126479T DE60126479T DE60126479D1 DE 60126479 D1 DE60126479 D1 DE 60126479D1 DE 60126479 T DE60126479 T DE 60126479T DE 60126479 T DE60126479 T DE 60126479T DE 60126479 D1 DE60126479 D1 DE 60126479D1
Authority
DE
Germany
Prior art keywords
modulation device
valued modulation
valued
modulation
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
Application number
DE60126479T
Other languages
English (en)
Other versions
DE60126479T2 (de
Inventor
Katsuhiro Shimizu
Kazuyuki Ishida
Yukio Kobayashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE60126479D1 publication Critical patent/DE60126479D1/de
Publication of DE60126479T2 publication Critical patent/DE60126479T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H04B10/504—Laser transmitters using direct 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
DE60126479T 2001-05-08 2001-10-04 Vorrichtung zur mehrwertigen Modulation Expired - Lifetime DE60126479T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001137126A JP4744720B2 (ja) 2001-05-08 2001-05-08 多値変調装置
JP2001137126 2001-05-08

Publications (2)

Publication Number Publication Date
DE60126479D1 true DE60126479D1 (de) 2007-03-22
DE60126479T2 DE60126479T2 (de) 2007-11-15

Family

ID=18984279

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60126479T Expired - Lifetime DE60126479T2 (de) 2001-05-08 2001-10-04 Vorrichtung zur mehrwertigen Modulation

Country Status (4)

Country Link
US (1) US7058313B2 (de)
EP (1) EP1257078B1 (de)
JP (1) JP4744720B2 (de)
DE (1) DE60126479T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4648093B2 (ja) * 2005-05-31 2011-03-09 株式会社日立製作所 光伝送装置および集積回路装置
JP4849632B2 (ja) * 2007-06-18 2012-01-11 日本電信電話株式会社 光伝送方法、符号化方法、光伝送システムおよび光送信装置
JP4925334B2 (ja) * 2007-11-13 2012-04-25 日本電信電話株式会社 光伝送方式
JP5014303B2 (ja) * 2008-10-09 2012-08-29 日本電信電話株式会社 光伝送方法および光伝送システム
JP5261164B2 (ja) * 2008-12-24 2013-08-14 日本電信電話株式会社 光伝送システム
JP5264521B2 (ja) 2009-01-16 2013-08-14 三菱電機株式会社 光送信器
JP2011022479A (ja) * 2009-07-17 2011-02-03 Mitsubishi Electric Corp 多値光送信器
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
JP5845514B2 (ja) * 2011-10-04 2016-01-20 学校法人玉川学園 暗号光送信装置及び受信装置、並びに暗号通信システム
JP5375991B2 (ja) * 2012-02-20 2013-12-25 富士通株式会社 光信号入力の有無を検出する信号入力検出装置
JP2014171016A (ja) * 2013-03-01 2014-09-18 Nec Corp 光送信システム、その制御方法、及びプログラム
US9705598B2 (en) * 2014-04-03 2017-07-11 Commscope, Inc. Of North Carolina Methods and systems for reducing optical beat interference via polarization diversity in FTTx networks
JP6291361B2 (ja) * 2014-06-18 2018-03-14 日本電信電話株式会社 光アクセスシステム、終端装置、宅内装置及び光アクセス方法
CN104506239B (zh) * 2014-11-28 2017-06-27 北京百度网讯科技有限公司 光模块以及用于光模块的信息传输方法
CN105721063B (zh) * 2016-02-24 2018-04-20 烽火通信科技股份有限公司 一种基于voa调制的光载波通讯方法及系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714437A (en) 1970-08-14 1973-01-30 Bell Telephone Labor Inc Optical communication system with pcm encoding with plural discrete unequally spaced intensity levels
IT1117071B (it) * 1977-09-05 1986-02-10 Cselt Centro Studi Lab Telecom Dispositivo per trasmettere segnali multilivello su fibra ottica
JPS5737941A (en) * 1980-08-13 1982-03-02 Fujitsu Ltd Optical output circuit
JPS627183A (ja) * 1985-07-03 1987-01-14 Nec Corp 半導体レ−ザの光出力安定化回路
JPS635633A (ja) 1986-06-25 1988-01-11 Nec Corp 光多値通信方式
JPH04132428A (ja) * 1990-09-25 1992-05-06 Canon Inc 光通信方式及びそこに用いられる受信装置
DE4341408A1 (de) * 1993-12-04 1995-06-08 Sel Alcatel Ag Optisches System zur Übertragung eines Mehrstufensignals
US6026368A (en) * 1995-07-17 2000-02-15 24/7 Media, Inc. On-line interactive system and method for providing content and advertising information to a targeted set of viewers
JPH09181682A (ja) * 1995-12-26 1997-07-11 Fujitsu Ltd 光変調器の駆動回路及び光送信機
JP4108254B2 (ja) * 2000-07-11 2008-06-25 富士通株式会社 光送信器および光伝送システム
US6459521B1 (en) * 2000-08-28 2002-10-01 Agere Systems Guardian Corp. Electroabsorption modulator integrated distributed feedback laser transmitter
DE60045385D1 (de) 2000-10-13 2011-01-27 Mitsubishi Electric Corp Verfahren und einrichtung zur optischen übertragung

Also Published As

Publication number Publication date
DE60126479T2 (de) 2007-11-15
US20020167705A1 (en) 2002-11-14
EP1257078A3 (de) 2005-12-21
EP1257078B1 (de) 2007-02-07
US7058313B2 (en) 2006-06-06
EP1257078A2 (de) 2002-11-13
JP4744720B2 (ja) 2011-08-10
JP2002333603A (ja) 2002-11-22

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8320 Willingness to grant licences declared (paragraph 23)