IT1247844B - Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l'emissione luminosa in tutta la linea in presenza di un'interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita' - Google Patents

Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l'emissione luminosa in tutta la linea in presenza di un'interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita'

Info

Publication number
IT1247844B
IT1247844B ITMI910863A ITMI910863A IT1247844B IT 1247844 B IT1247844 B IT 1247844B IT MI910863 A ITMI910863 A IT MI910863A IT MI910863 A ITMI910863 A IT MI910863A IT 1247844 B IT1247844 B IT 1247844B
Authority
IT
Italy
Prior art keywords
optical fiber
optical
line
interrupt
restore
Prior art date
Application number
ITMI910863A
Other languages
English (en)
Inventor
Giorgio Grasso
Aldo Righetti
Mario Tamburello
Original Assignee
Pirelli Cavi S P A Dir Proprie
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11359335&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IT1247844(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Publication of ITMI910863A0 publication Critical patent/ITMI910863A0/it
Priority to ITMI910863A priority Critical patent/IT1247844B/it
Application filed by Pirelli Cavi S P A Dir Proprie filed Critical Pirelli Cavi S P A Dir Proprie
Priority to ES92200638T priority patent/ES2110464T3/es
Priority to DE69222881T priority patent/DE69222881T2/de
Priority to EP92200638A priority patent/EP0507367B1/en
Priority to CA002062664A priority patent/CA2062664C/en
Priority to JP4074182A priority patent/JPH05130043A/ja
Publication of ITMI910863A1 publication Critical patent/ITMI910863A1/it
Priority to US08/084,770 priority patent/US5355250A/en
Publication of IT1247844B publication Critical patent/IT1247844B/it
Application granted granted Critical

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
    • H04B10/293—Signal power control
    • H04B10/2931—Signal power control using AGC
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • 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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power

Landscapes

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

Abstract

La linea di telecomunicazione comprende almeno una stazione terminale (1, 2) avente un trasmettitore di segnali ottici (T1, T2) ed un ricevitore di segnati ottici (R1, R2), i quali sono operativamente collegati da un dispositivo automatico di protezione (19) atto a spegnere detto trasmettitore (T1, T2) in assenza di segnale ottico ricevuto, almeno una linea a fibre ottiche (3, 4) per la trasmissione dei segnali ottici trasmessi da detto trasmettitore e ricevuti da detto ricevitore, ed almeno un amplificatore ottico (5) incluso in detta linea (3, 4). A detto amplificatore ottico (5) sono associati mezzi (12) di rilevamento della presenza di energia luminosa in ingresso e mezzi (14) di comando dello spegnimento dell'amplificatore, che in assenza di energia luminosa in ingresso sono comandati da detti mezzi di rilevamento (12) ad interrompere sostanzialmente ogni emissione di energia luminosa da parte di detto amplificatore ottico.(Fig. 2).
ITMI910863A 1991-03-29 1991-03-29 Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l'emissione luminosa in tutta la linea in presenza di un'interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita' IT1247844B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ITMI910863A IT1247844B (it) 1991-03-29 1991-03-29 Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l'emissione luminosa in tutta la linea in presenza di un'interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita'
ES92200638T ES2110464T3 (es) 1991-03-29 1992-03-05 Interruptor de proteccion en una linea optica de telecomunicaciones que comporta amplificadores opticos.
EP92200638A EP0507367B1 (en) 1991-03-29 1992-03-05 Protection switch in an optical telecommunication line with optical amplifiers
DE69222881T DE69222881T2 (de) 1991-03-29 1992-03-05 Schutzschalter in einer optischen Fernmeldeleitung mit optischen Verstärkern
CA002062664A CA2062664C (en) 1991-03-29 1992-03-11 Optical-fibre telecommunication line with optical amplifiers, provided with protection means in a position of interrupting the light emission along the entire line in the presenceof an interruption of the optical fibre and of re-activating it automatically when its continuity is restored
JP4074182A JPH05130043A (ja) 1991-03-29 1992-03-30 保護装置を備えた光増幅器を含む光フアイバ通信回線
US08/084,770 US5355250A (en) 1991-03-29 1993-06-29 Fiber optical communication line with shut off control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI910863A IT1247844B (it) 1991-03-29 1991-03-29 Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l'emissione luminosa in tutta la linea in presenza di un'interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita'

Publications (3)

Publication Number Publication Date
ITMI910863A0 ITMI910863A0 (it) 1991-03-29
ITMI910863A1 ITMI910863A1 (it) 1992-09-29
IT1247844B true IT1247844B (it) 1995-01-02

Family

ID=11359335

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910863A IT1247844B (it) 1991-03-29 1991-03-29 Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l'emissione luminosa in tutta la linea in presenza di un'interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita'

Country Status (7)

Country Link
US (1) US5355250A (it)
EP (1) EP0507367B1 (it)
JP (1) JPH05130043A (it)
CA (1) CA2062664C (it)
DE (1) DE69222881T2 (it)
ES (1) ES2110464T3 (it)
IT (1) IT1247844B (it)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2068975C (en) * 1991-05-20 2002-03-26 Kazunori Nakamura Optical amplification system
DE4215338A1 (de) * 1992-05-09 1993-11-11 Sel Alcatel Ag Optisches Nachrichtenübertragungssystem mit Überwachungsvorrichtung zur Vermeidung von Riesenimpulsen
DE4310292A1 (de) * 1993-03-30 1994-10-06 Sel Alcatel Ag Faseroptischer Verstärker mit einer Vorrichtung zu Überwachung der Eingangsleistung
JPH0816761B2 (ja) * 1993-04-13 1996-02-21 日本電気株式会社 光増幅器制御回路
GB9309006D0 (en) * 1993-04-30 1993-06-16 Laser Ecosse Ltd High power laser amplifier
DE4321856A1 (de) * 1993-07-01 1995-01-12 Sel Alcatel Ag Faseroptischer Verstärker mit einer Vorrichtung zur Überwachung der Pump- und Eingangsleistung
JPH0837497A (ja) * 1994-05-20 1996-02-06 Fujitsu Ltd 光増幅器及び光送信装置
JP3295533B2 (ja) * 1994-06-30 2002-06-24 富士通株式会社 光増幅器
JPH0897773A (ja) * 1994-09-27 1996-04-12 Fujitsu Ltd 光信号伝送装置
US5563731A (en) * 1995-02-22 1996-10-08 Nec Corporation Monitor control signal receiving apparatus for optical fiber amplifier
DE69608263T2 (de) * 1995-03-24 2000-12-21 British Telecomm Optisches netzwerk
JPH08331048A (ja) * 1995-06-05 1996-12-13 Fujitsu Ltd 光信号受信装置
JPH0993202A (ja) * 1995-09-21 1997-04-04 Fujitsu Ltd 双方向光増幅回路
US5905588A (en) * 1995-09-26 1999-05-18 The Furukawa Electric Co., Ltd. Optical transmitting device
JPH10164018A (ja) * 1996-11-26 1998-06-19 Fujitsu Ltd 光送信機並びに該光送信機を有する端局装置及び光通信システム
IL120898A (en) * 1997-05-22 2000-02-17 D S P C Israel Ltd Bi-directional channel analysis
US6317255B1 (en) * 1998-04-28 2001-11-13 Lucent Technologies Inc. Method and apparatus for controlling optical signal power in response to faults in an optical fiber path
US6580530B1 (en) 1998-05-29 2003-06-17 Cisco Photonics Italy S.R.L. Optical communication system
KR20010023279A (ko) 1998-06-26 2001-03-26 오카야마 노리오 광 증폭 중계 시스템
EP1017192B1 (en) * 1998-12-31 2006-02-22 Cisco Systems International B.V. Automatic protection system for an optical transmission system
US6583899B1 (en) * 1998-12-31 2003-06-24 Cisco Photonics Italy S.R.L. Automatic protection system for an optical transmission system
US6681079B1 (en) * 2000-05-18 2004-01-20 Nortel Networks Limited Optical fibre monitoring system
ATE367021T1 (de) * 2000-05-24 2007-08-15 Corvis Corp Optische übertragungssysteme und -verfahren mit optischem schutz
US20020063932A1 (en) * 2000-05-30 2002-05-30 Brian Unitt Multiple access system for communications network
JP2001358392A (ja) * 2000-06-13 2001-12-26 Oki Electric Ind Co Ltd 安全光移行制御方法および光ファイバ増幅器
US6473224B2 (en) * 2000-12-01 2002-10-29 Alcatel Configurable safety shutdown for an optical amplifier using non-volatile storage
CA2340533A1 (en) 2001-03-13 2002-09-13 Claude Houde Fiber optic based security system
US20030002109A1 (en) * 2001-06-29 2003-01-02 Jim Hochberg Eye safety shutdown
DE10131942C2 (de) * 2001-07-02 2003-05-15 Adva Ag Verfahren für das Aktivieren eines optischen Verstärkers in einer optischen Übertragungsstrecke und hierzu geeigneter optischer Verstärker
EP1309108A1 (en) * 2001-10-31 2003-05-07 Agilent Technologies, Inc. (a Delaware corporation) Optical transceiver with automatic power shut-down arrangement
ATE356475T1 (de) * 2002-02-11 2007-03-15 Cit Alcatel Schutzverfahren und schnittstelle für fiberoptische systeme
JP3878641B2 (ja) * 2003-05-23 2007-02-07 富士通株式会社 ラマン増幅による雑音光の補正機能を備えた光伝送システム
US7218442B2 (en) * 2005-03-04 2007-05-15 Jds Uniphase Corporation Optical communications system with fiber break detection in the presence of Raman amplification
US7773884B2 (en) * 2005-10-31 2010-08-10 Red - C Optical Newworks Ltd. Method and apparatus for automatic shut-down and start-up of optical amplifiers in optical networks
KR100759824B1 (ko) * 2006-09-07 2007-09-18 한국전자통신연구원 광신호 출력제어 방법 및 그 방법을 채용한 수동형광가입자망 시스템
JP4376263B2 (ja) * 2006-12-08 2009-12-02 富士通株式会社 光波長多重システム
JP4678020B2 (ja) * 2007-10-29 2011-04-27 株式会社日立製作所 光ファイバ増幅器および光伝送システム
JP5794237B2 (ja) * 2011-01-19 2015-10-14 株式会社ニコン レーザ装置
US10509390B2 (en) 2015-02-12 2019-12-17 Glowforge Inc. Safety and reliability guarantees for laser fabrication
CN107438494B (zh) 2015-02-12 2023-09-19 格罗弗治公司 用于激光加工的视觉预览
WO2018098396A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Multi-user computer-numerically-controlled machine
WO2018098393A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Housing for computer-numerically-controlled machine
WO2018098398A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Preset optical components in a computer numerically controlled machine
WO2018098399A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Controlled deceleration of moveable components in a computer numerically controlled machine
CN110226137A (zh) 2016-11-25 2019-09-10 格罗弗治公司 借助图像跟踪进行制造
WO2018098397A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Calibration of computer-numerically-controlled machine
WO2018098395A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Improved engraving in a computer numerically controlled machine
US11262236B2 (en) 2019-04-12 2022-03-01 Glowforge Inc. Laser fabrication with beam detection
US11740608B2 (en) 2020-12-24 2023-08-29 Glowforge, Inc Computer numerically controlled fabrication using projected information
US11698622B2 (en) 2021-03-09 2023-07-11 Glowforge Inc. Previews for computer numerically controlled fabrication

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2751645C3 (de) * 1977-11-18 1980-08-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Überwachung von Nachrichtenübertragungssystemen mit Lichtwellenleitern
JPS55152434A (en) * 1979-05-17 1980-11-27 Kokusai Denshin Denwa Co Ltd <Kdd> Light output monitoring system for light repeater
DE3007958C2 (de) * 1980-03-01 1985-01-17 Hartmann & Braun Ag, 6000 Frankfurt Opto-elektonisches Übertragungssystem
DE3201763A1 (de) * 1982-01-21 1983-09-08 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Optische uebertragungsstrecke
GB2165412B (en) * 1984-10-05 1988-08-10 Stc Plc Improvements in optical transmission systems
SE458328B (sv) * 1987-07-16 1989-03-13 Ericsson Telefon Ab L M Anordning foer fellokalisering i en dubbelriktad optisk linjelaenk
DE68910851T2 (de) * 1988-03-04 1994-05-05 British Telecomm Verstärkung von optischen Signalen.
JPH01287426A (ja) * 1988-05-13 1989-11-20 Hamamatsu Photonics Kk 光信号サンプリング装置
US4882774A (en) * 1988-08-25 1989-11-21 Laser Communications, Inc. Laser beam data verification system
JPH02184828A (ja) * 1989-01-12 1990-07-19 Toshiba Corp 半導体光増幅器
IT1231379B (it) * 1989-07-21 1991-12-02 Pirelli Cavi Spa Linea di telecomunicazioni a fibre ottiche incorporante amplificatori dei segnali trasmessi ed amplificatori per detta linea
IT1238032B (it) * 1990-01-30 1993-06-23 Pirelli Cavi Spa Linea di telecomunicazione a fibre ottiche con canali separati di servizio

Also Published As

Publication number Publication date
EP0507367A1 (en) 1992-10-07
DE69222881D1 (de) 1997-12-04
ITMI910863A0 (it) 1991-03-29
DE69222881T2 (de) 1998-04-09
US5355250A (en) 1994-10-11
CA2062664C (en) 1999-11-30
ITMI910863A1 (it) 1992-09-29
JPH05130043A (ja) 1993-05-25
EP0507367B1 (en) 1997-10-29
CA2062664A1 (en) 1992-09-30
ES2110464T3 (es) 1998-02-16

Similar Documents

Publication Publication Date Title
IT1247844B (it) Linea di telecomunicazione a fibre ottiche con amplificatori ottici, dotata di mezzi di protezione in grado di interrompere l&#39;emissione luminosa in tutta la linea in presenza di un&#39;interruzione della fibra ottica e di riattivarla automaticamente al ripristino della sua continuita&#39;
IT1247845B (it) Linea di telecomunicazione a fibre ottiche con dispositivo di protezione per amplificatori ottici
ES2072271T3 (es) Componente autarquico accionado con fotones.
TW325610B (en) Dynamic control of transmitting power at a transmitter and attenuation at a receiver
PT94781A (pt) Cabo de fibra optica de telecomunicacao compreendendo amplificadores dos sinaistransmitidos e amplificadores para o dito cabo
DE69316345D1 (de) Optischer empfaenger
GB2280560B (en) Communications system
CA2231889A1 (en) Optical transceiver using common optical path for transmission and reception
EP0981215A3 (en) Optical amplifier repeater
SE9202112D0 (sv) Foerfarande och anordning foer oevervakning av foergrenade optiska ledningsnaet
SE8803780D0 (sv) Laseranordning foer ett optiskt kommunikationssystem
DE60022331D1 (de) Atmosphärische optische übertragung
DE60029988D1 (de) Kompakte terahertzmodule mit faseranschluss
CA2125692A1 (en) Optical line switching system
EA200200391A1 (ru) Способ и система защиты связи
CN211209682U (zh) 一种新型光电开关
IT1248307B (it) Procedimento per ricevere segnali multiplex di lunghezza d&#39;onda
CN109525312A (zh) 一种光电探测器保护装置与方法
DE60109884D1 (de) Vermittlungsbussystem
JPH05308166A (ja) 光増幅装置
JPS60169248A (ja) 光フアイバ通信方式
GB9325005D0 (en) Network surveillance
AU2002214469A1 (en) A system and a method for limiting the maximum of light transmitted from a ribbon fiber
TH11035EX (th) ชุดอุปกรณ์สำหรับการขยายสัญญาณแสงในสายส่งผ่านเส้นใยทางแสง
JPS61170153A (ja) 単線双方向光通信装置

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19980327