DE69031787D1 - Verfahren und System zur Direktmodulations-Phasenumtastung - Google Patents

Verfahren und System zur Direktmodulations-Phasenumtastung

Info

Publication number
DE69031787D1
DE69031787D1 DE69031787T DE69031787T DE69031787D1 DE 69031787 D1 DE69031787 D1 DE 69031787D1 DE 69031787 T DE69031787 T DE 69031787T DE 69031787 T DE69031787 T DE 69031787T DE 69031787 D1 DE69031787 D1 DE 69031787D1
Authority
DE
Germany
Prior art keywords
phase shift
shift keying
direct modulation
modulation phase
direct
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 - Fee Related
Application number
DE69031787T
Other languages
English (en)
Other versions
DE69031787T2 (de
Inventor
Takao Naito
Terumi Chikama
Shigeki Watanabe
Tetsuya Kiyonaga
Hiroshi Onaka
Yoshihito Onoda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Ltd filed Critical Fujitsu Ltd
Publication of DE69031787D1 publication Critical patent/DE69031787D1/de
Application granted granted Critical
Publication of DE69031787T2 publication Critical patent/DE69031787T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2331—Demodulator circuits; Receiver circuits using non-coherent demodulation wherein the received signal is demodulated using one or more delayed versions of itself
    • 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
    • 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
    • H04B10/548—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
    • 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
    • H04B10/60—Receivers
    • 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
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/64—Heterodyne, i.e. coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [IF] is obtained
    • 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
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/223—Demodulation in the optical domain
    • 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
    • H04L27/2276—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals using frequency multiplication or harmonic tracking

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE69031787T 1989-06-19 1990-06-19 Verfahren und System zur Direktmodulations-Phasenumtastung Expired - Fee Related DE69031787T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1154664A JP2758211B2 (ja) 1989-06-19 1989-06-19 周波数直接変調ｐｓｋ方式

Publications (2)

Publication Number Publication Date
DE69031787D1 true DE69031787D1 (de) 1998-01-22
DE69031787T2 DE69031787T2 (de) 1998-04-23

Family

ID=15589193

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69031787T Expired - Fee Related DE69031787T2 (de) 1989-06-19 1990-06-19 Verfahren und System zur Direktmodulations-Phasenumtastung

Country Status (5)

Country Link
US (1) US5050176A (de)
EP (1) EP0404054B1 (de)
JP (1) JP2758211B2 (de)
CA (1) CA2019178C (de)
DE (1) DE69031787T2 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5200964A (en) * 1991-03-12 1993-04-06 General Instrument Corporation Broad linewidth lasers for optical fiber communication systems
JPH05227103A (ja) * 1991-11-14 1993-09-03 Nec Corp 光通信方法
JPH06178612A (ja) * 1992-10-12 1994-06-28 Hideji Kiyohara 植芝用造成土壌構造
US5574589A (en) * 1995-01-09 1996-11-12 Lucent Technologies Inc. Self-amplified networks
US6556326B2 (en) * 1996-12-20 2003-04-29 Tyco Telecommunications (Us) Inc. Synchronous amplitude modulation for improved performance of optical transmission systems
US20040161245A1 (en) * 1996-12-20 2004-08-19 Bergano Neal S. Synchronous amplitude modulation for improved performance of optical transmission systems
AU2001229348A1 (en) * 2000-01-26 2001-08-07 Lockheed Martin Corporation Use of phase shift keyed coherent optical signaling in a wavelength division multiplexed optical fiber links
GB2370473B (en) 2000-12-21 2004-04-07 Marconi Caswell Ltd Improvements in or relating to optical communication
US6798557B1 (en) * 2003-05-22 2004-09-28 Lucent Technologies Inc. Direct optical N-state phase shift keying
US7492806B2 (en) * 2005-06-15 2009-02-17 Daylight Solutions, Inc. Compact mid-IR laser
US20100243891A1 (en) * 2005-06-15 2010-09-30 Timothy Day Compact mid-ir laser
US7535656B2 (en) * 2005-06-15 2009-05-19 Daylight Solutions, Inc. Lenses, optical sources, and their couplings
EP2008135A4 (de) * 2006-04-06 2015-08-26 Finisar Corp Vielseitiger kompakter sender zur erzeugung erweiterter modulationsformate
US7424042B2 (en) * 2006-09-22 2008-09-09 Daylight Solutions, Inc. Extended tuning in external cavity quantum cascade lasers
US7848382B2 (en) 2008-01-17 2010-12-07 Daylight Solutions, Inc. Laser source that generates a plurality of alternative wavelength output beams
US8565275B2 (en) 2008-04-29 2013-10-22 Daylight Solutions, Inc. Multi-wavelength high output laser source assembly with precision output beam
US8774244B2 (en) 2009-04-21 2014-07-08 Daylight Solutions, Inc. Thermal pointer
EP2548271A2 (de) * 2010-03-15 2013-01-23 Daylight Solutions Inc. Laserquelle zur erzeugung eines schnell wechselnden ausgabestrahls
US8335413B2 (en) 2010-05-14 2012-12-18 Daylight Solutions, Inc. Optical switch
US9225148B2 (en) 2010-09-23 2015-12-29 Daylight Solutions, Inc. Laser source assembly with thermal control and mechanically stable mounting
US8467430B2 (en) 2010-09-23 2013-06-18 Daylight Solutions, Inc. Continuous wavelength tunable laser source with optimum orientation of grating and gain medium
US9042688B2 (en) 2011-01-26 2015-05-26 Daylight Solutions, Inc. Multiple port, multiple state optical switch
JP2014036059A (ja) * 2012-08-07 2014-02-24 Nippon Telegr & Teleph Corp <Ntt> 光周波数変調信号発生器
WO2015038415A1 (en) 2013-09-13 2015-03-19 Corning Optical Communications LLC Methods, circuits and optical cable assemblies for optical transmission of high-speed data and low-speed data
TWI691187B (zh) * 2014-08-21 2020-04-11 日商新力股份有限公司 信號處理裝置及方法
CN106130644B (zh) * 2016-07-20 2018-04-03 上海交通大学 基于色散过补偿的频域均衡方法
ES2679403B1 (es) * 2017-02-24 2019-05-10 Univ Catalunya Politecnica Receptor heterodino independiente de la polarizacion para senales opticas moduladas en fase y codificadas diferencialmente
JP6767310B2 (ja) * 2017-05-26 2020-10-14 日本電信電話株式会社 光送受信システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60235543A (ja) * 1984-05-08 1985-11-22 Nec Corp 光位相変調方法
JPS6448480A (en) * 1987-08-19 1989-02-22 Fujitsu Ltd Semiconductor laser modulation control system
US5073331A (en) * 1988-03-04 1991-12-17 Fujitsu Limited Modulation method for use in a semiconductor laser and an apparatus therefor

Also Published As

Publication number Publication date
CA2019178A1 (en) 1990-12-19
US5050176A (en) 1991-09-17
DE69031787T2 (de) 1998-04-23
EP0404054A3 (de) 1992-01-08
JP2758211B2 (ja) 1998-05-28
CA2019178C (en) 1994-05-24
EP0404054A2 (de) 1990-12-27
JPH0321126A (ja) 1991-01-29
EP0404054B1 (de) 1997-12-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee