CA2118407A1 - Optical Clock Recovery - Google Patents

Optical Clock Recovery

Info

Publication number
CA2118407A1
CA2118407A1 CA 2118407 CA2118407A CA2118407A1 CA 2118407 A1 CA2118407 A1 CA 2118407A1 CA 2118407 CA2118407 CA 2118407 CA 2118407 A CA2118407 A CA 2118407A CA 2118407 A1 CA2118407 A1 CA 2118407A1
Authority
CA
Canada
Prior art keywords
modulator
encoded signal
optically encoded
laser
phase
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.)
Granted
Application number
CA 2118407
Other languages
French (fr)
Other versions
CA2118407C (en
Inventor
Kevin Smith
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.)
British Telecommunications PLC
Original Assignee
Kevin Smith
British Telecommunications Plc
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
Priority claimed from EP92303786A external-priority patent/EP0567693A1/en
Application filed by Kevin Smith, British Telecommunications Plc filed Critical Kevin Smith
Publication of CA2118407A1 publication Critical patent/CA2118407A1/en
Application granted granted Critical
Publication of CA2118407C publication Critical patent/CA2118407C/en
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
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • 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
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/299—Signal waveform processing, e.g. reshaping or retiming
    • 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
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0075—Arrangements for synchronising receiver with transmitter with photonic or optical means

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)
  • Lasers (AREA)
  • Optical Head (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

A system for recovering a clock from an optically encoded signal uses a mode-locked laser (4). A modulator (2) is connected in common with the laser cavity (3) of the laser ana won a transmission path (1) which applies the input optically encoded signal to the modulator (2). The modulator (2) in response to the optically encoded signal modulates the phase-and/or amplitude of light in the laser cavity (3) thereby locking the phase and frequency of an output pulse stream to the timing wave of the optically encoded signal. In a preferred example, the modulator is a non-linear optical modulator used for cross-phase modulation (XPM) of the light in the laser cavity.
CA002118407A 1992-04-27 1993-04-26 Optical clock recovery Expired - Fee Related CA2118407C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP92303786A EP0567693A1 (en) 1992-04-27 1992-04-27 Optical clock recovery
GB92303786.5 1992-04-27
GB92306311.0 1992-07-09
EP92306311 1992-07-09
PCT/GB1993/000863 WO1993022855A1 (en) 1992-04-27 1993-04-26 Optical clock recovery

Publications (2)

Publication Number Publication Date
CA2118407A1 true CA2118407A1 (en) 1993-11-11
CA2118407C CA2118407C (en) 1999-08-17

Family

ID=26132019

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002118407A Expired - Fee Related CA2118407C (en) 1992-04-27 1993-04-26 Optical clock recovery

Country Status (7)

Country Link
JP (1) JP3510247B2 (en)
KR (1) KR100322230B1 (en)
AU (1) AU670282B2 (en)
CA (1) CA2118407C (en)
DE (1) DE69331418T2 (en)
SG (1) SG49070A1 (en)
WO (1) WO1993022855A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69526342T2 (en) * 1994-05-23 2002-10-31 British Telecomm PROCESSING OPTICAL PACKAGES
CA2207504C (en) * 1994-12-23 2001-07-31 British Telecommunications Public Limited Company Node in optical tdm network
IT1276122B1 (en) * 1995-11-14 1997-10-24 Pirelli Cavi Spa METHOD AND DEVICE TO OPTICALLY RECOVER THE SYNCHRONISM OF A DIGITAL OPTICAL SIGNAL
AU735930B2 (en) * 1996-05-22 2001-07-19 British Telecommunications Public Limited Company Optical synchronisation arrangement
JP4454763B2 (en) * 2000-03-03 2010-04-21 富士通株式会社 Method, apparatus and system for waveform shaping signal light
FR2806559B1 (en) 2000-03-20 2002-05-31 Cit Alcatel SYNCHRONOUS OPTICAL REGENERATOR BY INTENSITY MODULATION AND PHASE MODULATION BY CROSS KERR EFFECT
US6636318B2 (en) 2000-10-06 2003-10-21 Alphion Corp. Bit-rate and format insensitive all-optical circuit for reshaping, regeneration and retiming of optical pulse streams
US6570697B2 (en) * 2000-10-06 2003-05-27 Alphion Corporation Format insensitive and bit rate independent optical preprocessor
US6563621B2 (en) * 2000-10-06 2003-05-13 Alphion Corporation Bit-rate and format insensitive all-optical clock extraction circuit
US7319555B2 (en) 2005-04-27 2008-01-15 Alphion Corporation Integrated performance monitoring, performance maintenance, and failure detection for photonic regenerators
JP4618118B2 (en) 2005-12-14 2011-01-26 沖電気工業株式会社 Passive mode-locked semiconductor laser and optical clock signal extraction device
JP4946662B2 (en) 2007-06-28 2012-06-06 沖電気工業株式会社 Optical clock signal regeneration device and optical clock signal regeneration method

Also Published As

Publication number Publication date
KR100322230B1 (en) 2002-06-20
SG49070A1 (en) 1998-05-18
CA2118407C (en) 1999-08-17
JP3510247B2 (en) 2004-03-22
WO1993022855A1 (en) 1993-11-11
KR950701482A (en) 1995-03-23
JPH07506231A (en) 1995-07-06
DE69331418T2 (en) 2002-08-29
AU4021993A (en) 1993-11-29
DE69331418D1 (en) 2002-02-07
AU670282B2 (en) 1996-07-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed