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WO2002032027A3 - Bit-rate and format insensitive all-optical clock extraction circuit - Google Patents

Bit-rate and format insensitive all-optical clock extraction circuit Download PDF

Info

Publication number
WO2002032027A3
WO2002032027A3 PCT/US2001/031000 US0131000W WO0232027A3 WO 2002032027 A3 WO2002032027 A3 WO 2002032027A3 US 0131000 W US0131000 W US 0131000W WO 0232027 A3 WO0232027 A3 WO 0232027A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
stage
optical
clock
interferometer
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/US2001/031000
Other languages
French (fr)
Other versions
WO2002032027A2 (en
Inventor
Bharat Dave
Doruk Engin
Kwang Kim
Mohammad Laham
Julio Martinez
Olga Nedzhvetskaya
Jithamithra Sarathy
Ronald Simprini
Boris Stefanov
Tan Thai
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.)
Alphion Corp
Original Assignee
Alphion 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
Priority claimed from US09/848,968 external-priority patent/US6570697B2/en
Priority claimed from US09/849,441 external-priority patent/US6563621B2/en
Application filed by Alphion Corp filed Critical Alphion Corp
Priority to AU2002213010A priority Critical patent/AU2002213010A1/en
Publication of WO2002032027A2 publication Critical patent/WO2002032027A2/en
Publication of WO2002032027A3 publication Critical patent/WO2002032027A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • H04B10/29—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
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Semiconductor Lasers (AREA)

Abstract

A method and circuit are presented for the all optical recovery of the clock signal from an arbitrary optical data signal. The method involves two stages. A first stage (150) preprocesses the optical signal by converting a NRZ signal to a PRZ signal, or if the input optical signal (100) is RZ, by merely amplifying it. In a preferred embodiment this stage is implemented via an integrated SOA in each arm (105, 106) of an asymmetric interferometric device. The output (103) of the processing stage is fed to a clock recovery stage (160), which consists of a symmetric interferometer that locks on to the inherent clock signal by using the second stage input signal to trigger two optical sources (113, 114) to self oscillate at the clock rate. In a preferred embodiment the second stage is implemented via SOAs integrated in the arms (111, 112) of an interferometer, with two DFB lasers (113, 114) as terminuses. The output (115) of the interferometer is an optical clock signal at the clock rate of the original input.
PCT/US2001/031000 2000-10-06 2001-10-04 Bit-rate and format insensitive all-optical clock extraction circuit Ceased WO2002032027A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002213010A AU2002213010A1 (en) 2000-10-06 2001-10-04 Bit-rate and format insensitive all-optical clock extraction circuit

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US23829700P 2000-10-06 2000-10-06
US23829800P 2000-10-06 2000-10-06
US60/238,298 2000-10-06
US60/238,297 2000-10-06
US09/848,968 US6570697B2 (en) 2000-10-06 2001-05-04 Format insensitive and bit rate independent optical preprocessor
US09/849,441 2001-05-04
US09/848,968 2001-05-04
US09/849,441 US6563621B2 (en) 2000-10-06 2001-05-04 Bit-rate and format insensitive all-optical clock extraction circuit

Publications (2)

Publication Number Publication Date
WO2002032027A2 WO2002032027A2 (en) 2002-04-18
WO2002032027A3 true WO2002032027A3 (en) 2003-02-27

Family

ID=27499916

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2001/030999 Ceased WO2002032033A2 (en) 2000-10-06 2001-10-04 Format insensitive and bit rate independent optical preprocessor
PCT/US2001/031000 Ceased WO2002032027A2 (en) 2000-10-06 2001-10-04 Bit-rate and format insensitive all-optical clock extraction circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2001/030999 Ceased WO2002032033A2 (en) 2000-10-06 2001-10-04 Format insensitive and bit rate independent optical preprocessor

Country Status (2)

Country Link
AU (2) AU2002213009A1 (en)
WO (2) WO2002032033A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2390243B (en) * 2002-06-28 2005-11-02 Corning Inc Optical regenerator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5434692A (en) * 1993-03-29 1995-07-18 France Telecom Optical device for the recovery of the timing of a coded signal
EP0901245A1 (en) * 1997-08-27 1999-03-10 Interuniversitair Micro-Elektronica Centrum Vzw Optical decision circuit and use thereof
JPH11101922A (en) * 1997-07-30 1999-04-13 Nec Corp Method for formation of optical timing pulse and optical timing circuit
US6118564A (en) * 1996-12-19 2000-09-12 Fujitsu Limited Optical time division demultiplexing apparatus and demultiplexed signal switching method as well as optical time division multiplex transmission system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387972A (en) * 1993-03-15 1995-02-07 National Research Council Of Canada Coherent phase and frequency detection using sum-frequency mixing in non-linear waveguides
GB2320634A (en) * 1996-12-19 1998-06-24 Northern Telecom Ltd Optical sampling by using an interferometer to modulate a pulse train

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5434692A (en) * 1993-03-29 1995-07-18 France Telecom Optical device for the recovery of the timing of a coded signal
US6118564A (en) * 1996-12-19 2000-09-12 Fujitsu Limited Optical time division demultiplexing apparatus and demultiplexed signal switching method as well as optical time division multiplex transmission system
JPH11101922A (en) * 1997-07-30 1999-04-13 Nec Corp Method for formation of optical timing pulse and optical timing circuit
EP0901245A1 (en) * 1997-08-27 1999-03-10 Interuniversitair Micro-Elektronica Centrum Vzw Optical decision circuit and use thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JINNO M. ET AL.: "All-optical timing extraction using a 1.5 micrometer selfpulsating multielectrode DFB LD", ELECTRONICS LETTERS, vol. 24, no. 23, 10 November 1998 (1998-11-10), pages 1426 - 1427, XP002958246 *
LEE ET AL.: "All-fiber-optic clock recovery from non-return to zero format data", OFC'98 TECHNICAL DIGEST, February 1998 (1998-02-01), pages 205 - 206, XP002958245 *
LEE ET AL.: "Passive all optical non-return-to-zero to pseudo-return-to-zero signal conversion for all optical clock recover", LEOS 96, vol. 2, November 1996 (1996-11-01), pages 113 - 114, XP000953661 *

Also Published As

Publication number Publication date
AU2002213010A1 (en) 2002-04-22
WO2002032033A3 (en) 2003-09-25
WO2002032033A2 (en) 2002-04-18
AU2002213009A1 (en) 2002-04-22
WO2002032027A2 (en) 2002-04-18

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