WO2002032033A3 - Format insensitive and bit rate independent optical preprocessor - Google Patents

Format insensitive and bit rate independent optical preprocessor Download PDF

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Publication number
WO2002032033A3
WO2002032033A3 PCT/US2001/030999 US0130999W WO0232033A3 WO 2002032033 A3 WO2002032033 A3 WO 2002032033A3 US 0130999 W US0130999 W US 0130999W WO 0232033 A3 WO0232033 A3 WO 0232033A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
optical
preprocessor
original
arm
Prior art date
Application number
PCT/US2001/030999
Other languages
French (fr)
Other versions
WO2002032033A2 (en
Inventor
Julio Martinez
Kwang Kim
Olga Nedzhvetskaya
Doruk Engin
Jithamithra Sarathy
Roman Antosik
Bharat Dave
Michael Evans
David Lidsky
Ronald Simprini
Boris Stefanov
Tan Thai
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 AU2002213009A priority Critical patent/AU2002213009A1/en
Publication of WO2002032033A2 publication Critical patent/WO2002032033A2/en
Publication of WO2002032033A3 publication Critical patent/WO2002032033A3/en

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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 an all-optical format independent preprocessor that processes an arbitrary optical input signal by converting a NRZ signal to a PRZ signal, or if the input optical subtracting a delayed copy of the signal from the original, thereby effectively doubling its frequency, and inserting a pulse at each transition of the original signal, whether rising or falling. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The asymmetry consists of a delay element in one arm. In a preferred embodiment the entire device is fabricated on a semiconductor substrate, allowing for compactness as well as minimization of interconnectivity losses and overall power consumption. The output of the preprocessor, having a significant frequency component at its original clock rate, can then be fed to a clock recovery stage for all-optical clock recovery.
PCT/US2001/030999 2000-10-06 2001-10-04 Format insensitive and bit rate independent optical preprocessor WO2002032033A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002213009A AU2002213009A1 (en) 2000-10-06 2001-10-04 Format insensitive and bit rate independent optical preprocessor

Applications Claiming Priority (8)

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

Publications (2)

Publication Number Publication Date
WO2002032033A2 WO2002032033A2 (en) 2002-04-18
WO2002032033A3 true WO2002032033A3 (en) 2003-09-25

Family

ID=27499916

Family Applications (2)

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

Family Applications Before (1)

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

Country Status (2)

Country Link
AU (2) AU2002213010A1 (en)
WO (2) WO2002032027A2 (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
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
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703547B1 (en) * 1993-03-29 1995-05-12 Rene Auffret Optical device for recovering the rhythm of a code signal.
JPH10178418A (en) * 1996-12-19 1998-06-30 Fujitsu Ltd Optical time division demultiplexer, demultiplex signal changeover method and optical time division multiplex system

Patent Citations (4)

* 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
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 ET AL.: "All-optical timing extraction using a 1.5 micrometer self pulsating multielectrode DFB LD", ELECTRONICS LETTERS, vol. 24, no. 23, 10 November 1988 (1988-11-10), pages 1426 - 1427, XP000709752 *
LEE ET AL.: "All-fiber-optic clock recovery from non-return to zero format data", OFC '98 TECHNICAL DIGEST, 22 February 1998 (1998-02-22) - 27 February 1998 (1998-02-27), pages 205 - 206, XP002959283 *
LEE ET AL.: "Passive all optical non-return-to-zero to pseudo-return-to-zero signal conversion for all optical clock recovery", LEOS '96, vol. 2, 18 November 1996 (1996-11-18) - 19 November 1996 (1996-11-19), pages 113 - 114, XP000953661 *

Also Published As

Publication number Publication date
WO2002032027A3 (en) 2003-02-27
AU2002213010A1 (en) 2002-04-22
WO2002032033A2 (en) 2002-04-18
AU2002213009A1 (en) 2002-04-22
WO2002032027A2 (en) 2002-04-18

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