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DK0569769T3 - Optisk telekommunikationssystem med overvågningsanordning til undgåelse af kraftige impulser - Google Patents

Optisk telekommunikationssystem med overvågningsanordning til undgåelse af kraftige impulser

Info

Publication number
DK0569769T3
DK0569769T3 DK93106767T DK93106767T DK0569769T3 DK 0569769 T3 DK0569769 T3 DK 0569769T3 DK 93106767 T DK93106767 T DK 93106767T DK 93106767 T DK93106767 T DK 93106767T DK 0569769 T3 DK0569769 T3 DK 0569769T3
Authority
DK
Denmark
Prior art keywords
monitoring device
telecommunication system
optical telecommunication
avoid strong
strong impulses
Prior art date
Application number
DK93106767T
Other languages
English (en)
Inventor
Dr Heidemann Rolf
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Application granted granted Critical
Publication of DK0569769T3 publication Critical patent/DK0569769T3/da

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
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/1001—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by controlling the optical pumping
    • 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
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
DK93106767T 1992-05-09 1993-04-27 Optisk telekommunikationssystem med overvågningsanordning til undgåelse af kraftige impulser DK0569769T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4215338A DE4215338A1 (de) 1992-05-09 1992-05-09 Optisches Nachrichtenübertragungssystem mit Überwachungsvorrichtung zur Vermeidung von Riesenimpulsen

Publications (1)

Publication Number Publication Date
DK0569769T3 true DK0569769T3 (da) 1999-08-30

Family

ID=6458505

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93106767T DK0569769T3 (da) 1992-05-09 1993-04-27 Optisk telekommunikationssystem med overvågningsanordning til undgåelse af kraftige impulser

Country Status (9)

Country Link
US (1) US5475521A (da)
EP (1) EP0569769B1 (da)
JP (1) JPH06120899A (da)
AU (1) AU663372B2 (da)
CA (1) CA2094867A1 (da)
DE (2) DE4215338A1 (da)
DK (1) DK0569769T3 (da)
ES (1) ES2128366T3 (da)
NZ (1) NZ247497A (da)

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* Cited by examiner, † Cited by third party
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CA2068975C (en) * 1991-05-20 2002-03-26 Kazunori Nakamura Optical amplification system
GB9309006D0 (en) * 1993-04-30 1993-06-16 Laser Ecosse Ltd High power laser amplifier
JPH07240551A (ja) * 1994-03-02 1995-09-12 Fujitsu Ltd 光増幅伝送装置におけるサージ光発生防止方式
JP3587580B2 (ja) * 1995-03-17 2004-11-10 富士通株式会社 光増幅中継器の入力モニタシステム
JPH0961862A (ja) * 1995-08-23 1997-03-07 Fujitsu Ltd 光増幅器の制御装置
JPH0993202A (ja) * 1995-09-21 1997-04-04 Fujitsu Ltd 双方向光増幅回路
US5745274A (en) * 1995-12-27 1998-04-28 Lucent Technologies Inc. Maintenance of optical networks
US6031647A (en) * 1996-10-23 2000-02-29 Nortel Networks Corporation Stable power control for optical transmission systems
US5889610A (en) * 1996-12-31 1999-03-30 Lucent Technologies Inc. Optical protection switching system
JP3000948B2 (ja) * 1997-01-16 2000-01-17 日本電気株式会社 光増幅器
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
US8988768B2 (en) 2011-01-19 2015-03-24 Nikon Corporation Laser device
US10509390B2 (en) 2015-02-12 2019-12-17 Glowforge Inc. Safety and reliability guarantees for laser fabrication
WO2016131018A1 (en) 2015-02-12 2016-08-18 Glowforge Inc. Visual preview for laser fabrication
WO2018098399A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Controlled deceleration of moveable components in a computer numerically controlled machine
WO2018098395A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Improved engraving 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
WO2018098398A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Preset optical components in a computer numerically controlled machine
US11262236B2 (en) 2019-04-12 2022-03-01 Glowforge Inc. Laser fabrication with beam detection
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
WO2018098397A1 (en) 2016-11-25 2018-05-31 Glowforge Inc. Calibration of computer-numerically-controlled machine
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
CN114397093B (zh) * 2022-01-21 2024-11-22 四川中久大光科技有限公司 一种光纤激光器功率监测系统及安全联锁方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2248372C2 (de) * 1972-10-03 1984-09-20 Siemens AG, 1000 Berlin und 8000 München Zwischenverstärker für ein optisches Nachrichtenübertragungssystem
JPS56162554A (en) * 1980-05-20 1981-12-14 Nippon Telegr & Teleph Corp <Ntt> Optical amplifying repeater
JPH0195418A (ja) * 1987-10-07 1989-04-13 Sumitomo Electric Ind Ltd 超電導薄膜の作製方法
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
CA2042697C (en) * 1990-05-18 1994-08-16 Kenji Tagawa Fiber optic amplifier
GB2245122B (en) * 1990-06-16 1994-08-03 Stc Plc Telemetry
US5268786A (en) * 1991-03-15 1993-12-07 Mitsubishi Denki Kabushiki Kaisha Optical fiber amplifier and its amplification method
IT1247844B (it) * 1991-03-29 1995-01-02 Pirelli Cavi S P A Dir Proprie 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'
JP3013113B2 (ja) * 1991-04-25 2000-02-28 富士通株式会社 光中継伝送路監視方法および装置
CA2068975C (en) * 1991-05-20 2002-03-26 Kazunori Nakamura Optical amplification system

Also Published As

Publication number Publication date
NZ247497A (en) 1995-11-27
EP0569769B1 (de) 1999-01-07
AU663372B2 (en) 1995-10-05
DE4215338A1 (de) 1993-11-11
CA2094867A1 (en) 1993-11-10
AU3830593A (en) 1993-11-11
DE59309267D1 (de) 1999-02-18
JPH06120899A (ja) 1994-04-28
ES2128366T3 (es) 1999-05-16
US5475521A (en) 1995-12-12
EP0569769A1 (de) 1993-11-18

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