JPS5853243A - Light transmitting system - Google Patents

Light transmitting system

Info

Publication number
JPS5853243A
JPS5853243A JP56150633A JP15063381A JPS5853243A JP S5853243 A JPS5853243 A JP S5853243A JP 56150633 A JP56150633 A JP 56150633A JP 15063381 A JP15063381 A JP 15063381A JP S5853243 A JPS5853243 A JP S5853243A
Authority
JP
Japan
Prior art keywords
light
fiber
signal
pumping
transmission
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP56150633A
Inventor
Juichi Noda
Yutaka Sasaki
Original Assignee
Nippon Telegr & Teleph Corp <Ntt>
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 Nippon Telegr & Teleph Corp <Ntt> filed Critical Nippon Telegr & Teleph Corp <Ntt>
Priority to JP56150633A priority Critical patent/JPS5853243A/en
Publication of JPS5853243A publication Critical patent/JPS5853243A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29Repeaters
    • H04B10/291Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/2912Repeaters 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
    • H04B10/2916Repeaters 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 using Raman or Brillouin amplifiers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/30Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
    • H01S3/302Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre

Abstract

PURPOSE:To realize the transmission of a long distance with no intervention of a repeater for the carrier signal light which is identical with the stokes light, by providing a photocouplers at several areas at the middle of a light transmission path and putting together the pumping beams which are consecutively transmitted. CONSTITUTION:The stokes light of a light source 1 undergoes an optical modulation by the signal given from a signal source 2 and is condensed through a lesn 4 to be led into an optical fiber 7. The pumping beams are condensed through a lens 5 at several areas at the middle of the fiber 7 and then led into the fiber 7. Then the signal light and the pumping beams are put togethr. Then the energy of the pumping beam is absorbed in terms of a travelling wave by the Raman gain of the fiber 7. Thus the signal light can be amplified. In such a way, a long distance transmission is made possible through an optical fiber.
JP56150633A 1981-09-25 1981-09-25 Light transmitting system Pending JPS5853243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56150633A JPS5853243A (en) 1981-09-25 1981-09-25 Light transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56150633A JPS5853243A (en) 1981-09-25 1981-09-25 Light transmitting system

Publications (1)

Publication Number Publication Date
JPS5853243A true JPS5853243A (en) 1983-03-29

Family

ID=15501114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56150633A Pending JPS5853243A (en) 1981-09-25 1981-09-25 Light transmitting system

Country Status (1)

Country Link
JP (1) JPS5853243A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139081A2 (en) * 1983-09-28 1985-05-02 Polaroid Corporation Optical communications system using raman repeaters and components therefor
JPS60157279A (en) * 1983-11-25 1985-08-17 Univ Leland Stanford Junior Filber optical amplifier system and method of amplifying photosignal
US5510931A (en) * 1989-08-31 1996-04-23 Fujitsu Limited Optical amplifier and optical communication system with optical amplifier using pumping right beam

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56165437A (en) * 1980-05-26 1981-12-19 Kokusai Denshin Denwa Co Ltd <Kdd> Optical repeating system for optical communication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56165437A (en) * 1980-05-26 1981-12-19 Kokusai Denshin Denwa Co Ltd <Kdd> Optical repeating system for optical communication

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139081A2 (en) * 1983-09-28 1985-05-02 Polaroid Corporation Optical communications system using raman repeaters and components therefor
JPS60157279A (en) * 1983-11-25 1985-08-17 Univ Leland Stanford Junior Filber optical amplifier system and method of amplifying photosignal
US5510931A (en) * 1989-08-31 1996-04-23 Fujitsu Limited Optical amplifier and optical communication system with optical amplifier using pumping right beam
US5521737A (en) * 1989-08-31 1996-05-28 Fujitsu Limited Optical amplifier and optical communication system with optical amplifier using pumping light beam
US5526163A (en) * 1989-08-31 1996-06-11 Fujitsu Limited Optical amplifier and optical communication system with optical amplifier using pumping light beam
US5535050A (en) * 1989-08-31 1996-07-09 Fujitsu Limited Optical amplifier and optical communication system with optical amplifier using pumping light beam
US5546213A (en) * 1989-08-31 1996-08-13 Fujitsu Limited Optical amplifier and optical communication system provided with the optical amplifier

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