ITMI910863A1 - 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 r - 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 r

Info

Publication number
ITMI910863A1
ITMI910863A1 IT000863A ITMI910863A ITMI910863A1 IT MI910863 A1 ITMI910863 A1 IT MI910863A1 IT 000863 A IT000863 A IT 000863A IT MI910863 A ITMI910863 A IT MI910863A IT MI910863 A1 ITMI910863 A1 IT MI910863A1
Authority
IT
Italy
Prior art keywords
optical fiber
line
interrupt
light emission
optical
Prior art date
Application number
IT000863A
Other languages
English (en)
Inventor
Giorgio Grasso
Aldo Righetti
Mario Tamburello
Original Assignee
Pirelli Cavi Spa
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=ITMI910863(A1) "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 Spa filed Critical Pirelli Cavi Spa
Priority to EP92200638A priority patent/EP0507367B1/en
Priority to ES92200638T priority patent/ES2110464T3/es
Priority to DE69222881T priority patent/DE69222881T2/de
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)
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'
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
ES92200638T ES2110464T3 (es) 1991-03-29 1992-03-05 Interruptor de proteccion en una linea optica de telecomunicaciones que comporta amplificadores opticos.
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 true ITMI910863A1 (it) 1992-09-29
IT1247844B 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)

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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
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JPH08331048A (ja) * 1995-06-05 1996-12-13 Fujitsu Ltd 光信号受信装置
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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
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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
EP1335508B1 (en) * 2002-02-11 2007-03-07 Alcatel Safety procedure for optical fiber systems and according safety interface to carry out such safety procedure
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
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EP3907570A1 (en) 2015-02-12 2021-11-10 Glowforge Inc. Cloud controlled laser fabrication
US12420355B2 (en) 2016-11-25 2025-09-23 Glowforge Inc. Laser fabrication with beam detection
US11262236B2 (en) 2019-04-12 2022-03-01 Glowforge Inc. Laser fabrication with beam detection
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WO2018098395A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Improved engraving in a computer numerically controlled machine
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US11740608B2 (en) 2020-12-24 2023-08-29 Glowforge, Inc Computer numerically controlled fabrication using projected information
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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
DE69222881T2 (de) 1998-04-09
CA2062664C (en) 1999-11-30
ITMI910863A0 (it) 1991-03-29
ES2110464T3 (es) 1998-02-16
JPH05130043A (ja) 1993-05-25
US5355250A (en) 1994-10-11
DE69222881D1 (de) 1997-12-04
CA2062664A1 (en) 1992-09-30
EP0507367B1 (en) 1997-10-29
IT1247844B (it) 1995-01-02

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Legal Events

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

Effective date: 19980327