WO2008117460A1 - 多値光強度変調器 - Google Patents

多値光強度変調器 Download PDF

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Publication number
WO2008117460A1
WO2008117460A1 PCT/JP2007/056444 JP2007056444W WO2008117460A1 WO 2008117460 A1 WO2008117460 A1 WO 2008117460A1 JP 2007056444 W JP2007056444 W JP 2007056444W WO 2008117460 A1 WO2008117460 A1 WO 2008117460A1
Authority
WO
WIPO (PCT)
Prior art keywords
light intensity
level
light
branch
intensity modulator
Prior art date
Application number
PCT/JP2007/056444
Other languages
English (en)
French (fr)
Inventor
Masaharu Doi
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/056444 priority Critical patent/WO2008117460A1/ja
Priority to JP2009506172A priority patent/JP5083310B2/ja
Publication of WO2008117460A1 publication Critical patent/WO2008117460A1/ja
Priority to US12/585,618 priority patent/US7941011B2/en

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
    • H04B10/505—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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference
    • G02F1/212—Mach-Zehnder type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/126—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode push-pull
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/127—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode travelling wave
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/20—LiNbO3, LiTaO3
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/20—Intrinsic phase difference, i.e. optical bias, of an optical modulator; Methods for the pre-set thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/21—Thermal instability, i.e. DC drift, of an optical modulator; Arrangements or methods for the reduction thereof
    • 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
    • H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Optical Communication System (AREA)

Abstract

　本発明の多値光強度変調器は、入力光をｎ分岐（ｎは２以上の整数）してｎ本の分岐導波路にそれぞれ送る。各分岐導波路上にはＭＺＩ型光変調部がそれぞれ設けられており、各ＭＺＩ型光変調部は、０．５：０．５とは異なる分岐比で入力光を二分岐し、２値の電気信号によりオン／オフ駆動されることで消光比の劣化した２値の光信号をそれぞれ出力する。そして、各ＭＺＩ型光変調部からの出力光を合波することにより、零レベルを含まない２ｎ値に光強度変調された光信号を出力する。これにより、２値の電気信号を用いた実用的な構成によって、零レベルを含まない４値以上の光強度変調を実現することが可能になる。
PCT/JP2007/056444 2007-03-27 2007-03-27 多値光強度変調器 WO2008117460A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2007/056444 WO2008117460A1 (ja) 2007-03-27 2007-03-27 多値光強度変調器
JP2009506172A JP5083310B2 (ja) 2007-03-27 2007-03-27 多値光強度変調器
US12/585,618 US7941011B2 (en) 2007-03-27 2009-09-18 Multilevel light intensity modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/056444 WO2008117460A1 (ja) 2007-03-27 2007-03-27 多値光強度変調器

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/585,618 Continuation US7941011B2 (en) 2007-03-27 2009-09-18 Multilevel light intensity modulator

Publications (1)

Publication Number Publication Date
WO2008117460A1 true WO2008117460A1 (ja) 2008-10-02

Family

ID=39788203

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/056444 WO2008117460A1 (ja) 2007-03-27 2007-03-27 多値光強度変調器

Country Status (3)

Country Link
US (1) US7941011B2 (ja)
JP (1) JP5083310B2 (ja)
WO (1) WO2008117460A1 (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010185978A (ja) * 2009-02-10 2010-08-26 Fujitsu Optical Components Ltd 光変調器
JP2010185979A (ja) * 2009-02-10 2010-08-26 Fujitsu Optical Components Ltd 光変調器
JP2010185977A (ja) * 2009-02-10 2010-08-26 Fujitsu Optical Components Ltd 光変調器
JP2010250125A (ja) * 2009-04-16 2010-11-04 Nippon Telegr & Teleph Corp <Ntt> 光変調器
US9081253B2 (en) 2012-11-09 2015-07-14 Sumitomo Electric Industries, Ltd. Integrated optical device and optical module
JP2016018039A (ja) * 2014-07-07 2016-02-01 日本電信電話株式会社 マッハツェンダ型振幅変調器、光多値信号変調装置、及び光多値信号変調方法
US11212007B2 (en) * 2008-09-08 2021-12-28 Luxtera Llc Method and system for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices
JP7467398B2 (ja) 2021-09-06 2024-04-15 Kddi株式会社 光変調器及び光送信装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008117460A1 (ja) * 2007-03-27 2008-10-02 Fujitsu Limited 多値光強度変調器
JP5267476B2 (ja) * 2010-01-29 2013-08-21 富士通オプティカルコンポーネンツ株式会社 光デバイスおよび光送信装置
US20160269121A1 (en) * 2015-03-09 2016-09-15 Alcatel-Lucent Usa Inc. Modulator Biasing For Optical Transmission
JP6931527B2 (ja) * 2016-12-06 2021-09-08 日本ルメンタム株式会社 光送信モジュール
US10373932B2 (en) * 2017-04-20 2019-08-06 Nanya Technology Corporation Stacked semiconductor structure
US11799559B2 (en) * 2020-02-20 2023-10-24 Nippon Telegraph And Telephone Corporation Optical IQ modulator

Citations (3)

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JP2002328347A (ja) * 2001-04-26 2002-11-15 Mitsubishi Electric Corp 光４値変調器および光４値変調方法
JP2003258733A (ja) * 2001-12-27 2003-09-12 Nippon Telegr & Teleph Corp <Ntt> 多値光強度変調回路
US20040021829A1 (en) * 2000-08-19 2004-02-05 Griffin Robert Anthony Multi-level optical signal generation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002328547A (ja) 2001-04-27 2002-11-15 Murata Mach Ltd 画像形成装置
US6744546B2 (en) 2001-12-27 2004-06-01 Nippon Telegraph And Telephone Corporation Multilevel light-intensity modulating circuit
KR100464366B1 (ko) 2002-02-16 2005-01-03 삼성전자주식회사 순방향 오류 정정 장치 및 방법
JP4594744B2 (ja) * 2005-01-14 2010-12-08 富士通オプティカルコンポーネンツ株式会社 光通信デバイス及び光デバイス
WO2008117460A1 (ja) * 2007-03-27 2008-10-02 Fujitsu Limited 多値光強度変調器
JP5045416B2 (ja) * 2007-12-17 2012-10-10 富士通株式会社 光導波路素子およびそれを用いた光学装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040021829A1 (en) * 2000-08-19 2004-02-05 Griffin Robert Anthony Multi-level optical signal generation
JP2002328347A (ja) * 2001-04-26 2002-11-15 Mitsubishi Electric Corp 光４値変調器および光４値変調方法
JP2003258733A (ja) * 2001-12-27 2003-09-12 Nippon Telegr & Teleph Corp <Ntt> 多値光強度変調回路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TRAN D.D. ET AL.: "Geometrical and Phasor Representation of Multi-level Amplitude-Phase Modulation Formats and Photonic Transmitter Structures", TENCON 2005 2005 IEEE REGION 10, November 2005 (2005-11-01), pages 1 - 5, XP003024525 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11212007B2 (en) * 2008-09-08 2021-12-28 Luxtera Llc Method and system for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices
JP2010185978A (ja) * 2009-02-10 2010-08-26 Fujitsu Optical Components Ltd 光変調器
JP2010185979A (ja) * 2009-02-10 2010-08-26 Fujitsu Optical Components Ltd 光変調器
JP2010185977A (ja) * 2009-02-10 2010-08-26 Fujitsu Optical Components Ltd 光変調器
US8606053B2 (en) 2009-02-10 2013-12-10 Fujitsu Limited Optical modulator
JP2010250125A (ja) * 2009-04-16 2010-11-04 Nippon Telegr & Teleph Corp <Ntt> 光変調器
US9081253B2 (en) 2012-11-09 2015-07-14 Sumitomo Electric Industries, Ltd. Integrated optical device and optical module
JP2016018039A (ja) * 2014-07-07 2016-02-01 日本電信電話株式会社 マッハツェンダ型振幅変調器、光多値信号変調装置、及び光多値信号変調方法
JP7467398B2 (ja) 2021-09-06 2024-04-15 Kddi株式会社 光変調器及び光送信装置

Also Published As

Publication number Publication date
JPWO2008117460A1 (ja) 2010-07-08
US7941011B2 (en) 2011-05-10
JP5083310B2 (ja) 2012-11-28
US20100014801A1 (en) 2010-01-21

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