WO2001063803A1 - Detection simple et ultra-rapide des protocoles et des formes de signaux optiques - Google Patents

Detection simple et ultra-rapide des protocoles et des formes de signaux optiques Download PDF

Info

Publication number
WO2001063803A1
WO2001063803A1 PCT/US2001/006019 US0106019W WO0163803A1 WO 2001063803 A1 WO2001063803 A1 WO 2001063803A1 US 0106019 W US0106019 W US 0106019W WO 0163803 A1 WO0163803 A1 WO 0163803A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
pattern
optical
electrical
light
Prior art date
Application number
PCT/US2001/006019
Other languages
English (en)
Inventor
Robert Ward
Original Assignee
Xros, Inc.
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 Xros, Inc. filed Critical Xros, Inc.
Publication of WO2001063803A1 publication Critical patent/WO2001063803A1/fr

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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/67—Optical arrangements in the receiver
    • H04B10/676—Optical arrangements in the receiver for all-optical demodulation of the input optical signal

Definitions

  • the present invention relates generally to optical telecommunication systems, and more particularly to detecting patterns and protocols in digital signals transmitted thereover.
  • the pattern and protocol detector includes a digital-logic circuit that receives the low-frequency signal produced by the combining circuit. Responsive to the received low-frequency signal, the digital-logic circuit produces a signal that indicates an occurrence in the beam of light of the repetitive pattern imposed thereon by the modulation.
  • FIG. 1 depicts a redundant optical crossconnect, referred to by the general reference character 10, adapted for inclusion in a fiber optic telecommunications network.
  • the redundant crossconnect 10 includes two optical switch cores 32a and 32b.
  • Each of the optical switch cores 32a and 32b is preferably of the type disclosed in Patent Cooperation Treaty ("PCT") WO 00/20899 published 13 April 2000, entitled Flexible, Modular, Compact Fiber Optic Switch” that is incorporated herein by reference.
  • PCT Patent Cooperation Treaty
  • FIG. 1 optical telecommunication signals enter the redundant crossconnect 10 at opposite sides thereof via input optical fibers 34a and 34b.
  • optical telecommunication signals leave the redundant crossconnect 10 at opposite sides thereof via output optical fibers 36a and 36b.
  • CMOS FPGA 72 may be readily configured into the CMOS FPGA 72 that will recognize when the long duration, predictable logical zero (0) states occurs in the output signal received from the Exclusive-OR gate combining circuit 68 which indicates the occurrence of an AIS condition. It is significant that, in general, differing temporal delays are required to obtain the long duration, predictable logical zero (0) states illustrated respectively in FIG. 4A for the framing signal, " and in FIG. 4B for the AIS condition. Consequently, depending upon the temporal delay selected for the delay means 66, the pattern and protocol detector 50 illustrated in the block diagram of FIG. 3 can produce one or the other, but not both, of the long duration, predictable logical zero (0) states respectively illustrated in those FIGs.

Landscapes

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

Abstract

La présente invention concerne un détecteur (50) de formes et de protocoles comportant un convertisseur opto-électrique (OE) (56) qui reçoit un faisceau lumineux modulé. La modulation à laquelle on soumet le faisceau lumineux contient des formes répétitives. Le détecteur (50) comprend également un dispositif de retard (66) qui reçoit le signal électrique produit par le convertisseur OE (56), puis émet une réplique retardée dans le temps du signal électrique reçu. Le retard temporel du signal électrique introduit par le dispositif de retard (66) est sélectionné pour réaliser l'adaptation d'une forme répétitive présente dans le faisceau lumineux modulé. En outre, ce détecteur (50) comprend un circuit combineur (68), de préférence une porte OU exclusif, qui reçoit à la fois les signaux non retardés et les signaux retardés et les combine pour obtenir un signal basse fréquence. Le signal basse fréquence, représentant l'adaptation et la désadaptation entre des bits individuels dans les deux signaux, permet à un circuit numérique-logique (72) de produire un signal indiquant l'occurrence des formes répétitives.
PCT/US2001/006019 2000-02-22 2001-02-22 Detection simple et ultra-rapide des protocoles et des formes de signaux optiques WO2001063803A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18410100P 2000-02-22 2000-02-22
US60/184,101 2000-02-22

Publications (1)

Publication Number Publication Date
WO2001063803A1 true WO2001063803A1 (fr) 2001-08-30

Family

ID=22675549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/006019 WO2001063803A1 (fr) 2000-02-22 2001-02-22 Detection simple et ultra-rapide des protocoles et des formes de signaux optiques

Country Status (1)

Country Link
WO (1) WO2001063803A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6792174B1 (en) 1999-11-02 2004-09-14 Nortel Networks Limited Method and apparatus for signaling between an optical cross-connect switch and attached network equipment
US6813407B2 (en) 1999-11-02 2004-11-02 Nortel Networks Limited Method and apparatus for bridging optical signals in an optical network
CN100411970C (zh) * 2004-12-09 2008-08-20 北京大学 利用不同频率的光信号实现逻辑器件选址的方法
GB2447254A (en) * 2007-03-01 2008-09-10 Toshiba Res Europ Ltd A photon detector
GB2466299A (en) * 2008-12-19 2010-06-23 Toshiba Res Europ Ltd Single photon detection using variable delay component to cancel periodic signal variations
CN113728241A (zh) * 2019-04-25 2021-11-30 泰瑞达公司 并行路径延迟线
CN114441034A (zh) * 2020-11-04 2022-05-06 统雷有限公司 光子检测装置和方法

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369523A (en) * 1979-06-19 1983-01-18 Kokusai Denshin Denwa Co., Ltd. Remote control system of an optical repeater
US4563774A (en) * 1982-10-25 1986-01-07 At&T Bell Laboratories Address coded communication system
US4817014A (en) * 1986-10-03 1989-03-28 Endress U. Hauser Gmbh U. Co. Digital correlator
US4903225A (en) * 1988-12-23 1990-02-20 Ampex Corporation High speed digital data correlator having a synchronous pipelined full adder cell array
US4984238A (en) * 1988-03-14 1991-01-08 Fujitsu Limited Method and apparatus for frame synchronization
US5349550A (en) * 1991-06-27 1994-09-20 The United States Of America As Represented By The Secretary Of The Navy Long sequence correlation coprocessor
US5608735A (en) * 1995-09-20 1997-03-04 Adtran, Inc. Logical transform operator-based method and apparatus for extracting framing pattern from serial digital bit stream
US5694389A (en) * 1995-02-24 1997-12-02 Kabushiki Kaisha Toshiba OFDM transmission/reception system and transmitting/receiving apparatus
US5719903A (en) * 1995-06-28 1998-02-17 Motorola, Inc. Method and apparatus for receiving symbols
US5828476A (en) * 1996-06-11 1998-10-27 The Boeing Company Dual rate, burst mode, radiation hardened, optical transceiver
US5942937A (en) * 1997-11-19 1999-08-24 Advanced Micro Devices, Inc. Signal detection circuit using a plurality of delay stages with edge detection logic
US6069924A (en) * 1997-02-21 2000-05-30 Matsushita Electric Industrial Co., Ltd. Differential detector with error correcting function
US6160821A (en) * 1997-11-05 2000-12-12 Sony International (Europe) Gmbh Synchronization of digital communication systems
US6195402B1 (en) * 1996-09-25 2001-02-27 Matsushita Electric Industrial Co., Ltd. Pattern matching apparatus

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369523A (en) * 1979-06-19 1983-01-18 Kokusai Denshin Denwa Co., Ltd. Remote control system of an optical repeater
US4563774A (en) * 1982-10-25 1986-01-07 At&T Bell Laboratories Address coded communication system
US4817014A (en) * 1986-10-03 1989-03-28 Endress U. Hauser Gmbh U. Co. Digital correlator
US4984238A (en) * 1988-03-14 1991-01-08 Fujitsu Limited Method and apparatus for frame synchronization
US4903225A (en) * 1988-12-23 1990-02-20 Ampex Corporation High speed digital data correlator having a synchronous pipelined full adder cell array
US5349550A (en) * 1991-06-27 1994-09-20 The United States Of America As Represented By The Secretary Of The Navy Long sequence correlation coprocessor
US5694389A (en) * 1995-02-24 1997-12-02 Kabushiki Kaisha Toshiba OFDM transmission/reception system and transmitting/receiving apparatus
US5719903A (en) * 1995-06-28 1998-02-17 Motorola, Inc. Method and apparatus for receiving symbols
US5608735A (en) * 1995-09-20 1997-03-04 Adtran, Inc. Logical transform operator-based method and apparatus for extracting framing pattern from serial digital bit stream
US5828476A (en) * 1996-06-11 1998-10-27 The Boeing Company Dual rate, burst mode, radiation hardened, optical transceiver
US6195402B1 (en) * 1996-09-25 2001-02-27 Matsushita Electric Industrial Co., Ltd. Pattern matching apparatus
US6069924A (en) * 1997-02-21 2000-05-30 Matsushita Electric Industrial Co., Ltd. Differential detector with error correcting function
US6160821A (en) * 1997-11-05 2000-12-12 Sony International (Europe) Gmbh Synchronization of digital communication systems
US5942937A (en) * 1997-11-19 1999-08-24 Advanced Micro Devices, Inc. Signal detection circuit using a plurality of delay stages with edge detection logic

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6792174B1 (en) 1999-11-02 2004-09-14 Nortel Networks Limited Method and apparatus for signaling between an optical cross-connect switch and attached network equipment
US6813407B2 (en) 1999-11-02 2004-11-02 Nortel Networks Limited Method and apparatus for bridging optical signals in an optical network
CN100411970C (zh) * 2004-12-09 2008-08-20 北京大学 利用不同频率的光信号实现逻辑器件选址的方法
GB2447254A (en) * 2007-03-01 2008-09-10 Toshiba Res Europ Ltd A photon detector
GB2447254B (en) * 2007-03-01 2009-10-14 Toshiba Res Europ Ltd A photon detector
US8811829B2 (en) 2007-03-01 2014-08-19 Kabushiki Kaisha Toshiba Photon detector
US8891979B2 (en) 2007-03-01 2014-11-18 Kabushiki Kaisha Toshiba Photon detector
US9377356B2 (en) 2007-03-01 2016-06-28 Kabushiki Kaisha Toshiba Photon detector
GB2466299A (en) * 2008-12-19 2010-06-23 Toshiba Res Europ Ltd Single photon detection using variable delay component to cancel periodic signal variations
GB2466299B (en) * 2008-12-19 2012-06-13 Toshiba Res Europ Ltd A photon detector, a method of photon detection and a conditioning circuit
CN113728241A (zh) * 2019-04-25 2021-11-30 泰瑞达公司 并行路径延迟线
CN114441034A (zh) * 2020-11-04 2022-05-06 统雷有限公司 光子检测装置和方法

Similar Documents

Publication Publication Date Title
US7076177B1 (en) Bit-rate independent optical receiver and method thereof
US5617233A (en) Transparent optical node structure
Su et al. Theory of burst-mode receiver and its applications in optical multiaccess networks
EP0559659B1 (fr) Reseau optique passif
US5631757A (en) Full-duplex data communication system using different transmit and receive data symbol lengths
KR20130095314A (ko) 수동 광 네트워크를 위한 멀티플렉스 변환
WO2020197013A1 (fr) Dispositif et procédé de réception optique multiniveau avec horloge en mode rafale et performance de récupération de données améliorées
WO2021137385A1 (fr) Dispositif et procédé de réception optique avec horloge en mode rafale et performance de récupération de données améliorées
US7218854B1 (en) High capacity passive optical network
EP0681378B1 (fr) Récepteur de paquets de données avec sortie des données manipulée et effacement de l'éclairage de fond
US6124957A (en) Optical signal translator unit
WO2001063803A1 (fr) Detection simple et ultra-rapide des protocoles et des formes de signaux optiques
US6915079B1 (en) Non-return optical star coupler
US7099579B2 (en) Bridge terminal output unit
US7313327B2 (en) Switching control device for wavelength-division multiplexing optical signal
US7043160B1 (en) Method, system and signal for carrying overhead information in a transport network employing photonic switching nodes
Nishikido et al. Multigigabit multichannel optical interconnection module for broadband switching system
JP4626385B2 (ja) 時分割多重伝送方法及びシステム並びに送信装置
JP3636007B2 (ja) 光信号品質監視装置
Chen et al. A novel bi-directional wavelength path switched ring (BWPSR): Principle and experiment
JP3021945B2 (ja) 光端局中継伝送装置
JP2000332720A (ja) 光入力断検出装置
Ota et al. Low-power, high-sensitivity 30-Mbit/s burst-mode/packet receiver for PON application
Zeng et al. Experimental demonstration of a novel 5/10-Gb/s burst-mode clock and data recovery circuit for gigabit PONs
Zhu et al. Bit rate-adaptive 3R O/E/O transponder accomplishing full data rate transparency from 30 Mb/s to 2.5 Gb/s

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP