ES2087893T3 - Sistema optico de comunicacion. - Google Patents

Sistema optico de comunicacion.

Info

Publication number
ES2087893T3
ES2087893T3 ES90308536T ES90308536T ES2087893T3 ES 2087893 T3 ES2087893 T3 ES 2087893T3 ES 90308536 T ES90308536 T ES 90308536T ES 90308536 T ES90308536 T ES 90308536T ES 2087893 T3 ES2087893 T3 ES 2087893T3
Authority
ES
Spain
Prior art keywords
fiber
amplification
transmission
coupled
coupler
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.)
Expired - Lifetime
Application number
ES90308536T
Other languages
English (en)
Inventor
Emmanuel Desurvire
Randy C Giles
Matthew S Whalen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2087893T3 publication Critical patent/ES2087893T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude 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
    • H01S3/09—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
    • H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the 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
    • H01S3/09—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
    • H01S3/09408—Pump redundancy

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

ESTE INVENTO SE DIRIGE HACIA LA REDUCCION SUSTANCIAL DE PERDIDAS PRODUCIDAS CUANDO DOS FIBRAS OPTICAS DE DIFERENTES DIAMETROS DE MODO SE ACOPLAN JUNTAMENTE. EN ESTE INVENTO, EL ACOPLAMIENTO DE UNA FIBRA A LA DE OTRA, DONDE LAS FIBRAS SON DE DIFERENTES DIAMETROS DE MODO, NO SE REALIZA CON UNA FUSION AHUSADA, SEPARACION NUCLEO A NUCLEO, SINO CON UN ACOPLADOR DE FIBRA DE CAMPO EVANESCENTE. BREVEMENTE, PARA CONSEGUIR LA AMPLIFICACION DE UNA SEÑAL OPTICA DEBIL, SE INSERTA UNA FIBRA DE AMPLIFICACION DENTRO DEL SISTEMA EN UNO O EN VARIOS EMPLAZAMIENTOS. MAS ESPECIFICAMENTE, EN UNA UBICACION DESEADA, LA FIBRA DE TRANSMISION SE SEPARA PARA PROPORCIONAR DOS SECCIONES Y LAS SECCIONES SEPARADAS SE ACOPLAN TRANSVERSALMENTE A LA FIBRA DE AMPLIFICACION. LA SEÑAL DEBIL DESDE LA PRIMERA SECCION DE LA FIBRA DE TRANSMISION SE ACOPLA DENTRO DE LA FIBRA DE AMPLIFICACION, A TRAVES DE UN PRIMER TIPO DE CAMPO EVANESCENTE DE ACOPLADOR DE FIBRA, Y LA SEÑAL AMPLIFICADA SE ACOPLA DESDE LA FIBRA DE AMPLIFICACION HASTALA SEGUNDA SECCION DE LA FIBRA DE TRANSMISION, A TRAVES DE UN SEGUNDO TIPO DE CAMPO EVANESCENTE DE ACOPLADOR DE FIBRA. EL PRIMER TIPO DE CAMPO EVANESCENTE DE ACOPLADOR DE FIBRA SE DESIGNA PARA ACOPLAR SUSTANCIALMENTE LA TOTALIDAD DE LA ENERGIA DE LA SEÑAL DESDE LA PRIMERA SECCION DE LA FIBRA DE TRANSMISION HASTA LA FIBRA DE AMPLIFICACION Y NO ACOPLAR SUSTANCIALMENTE NINGUNA DE LAS SEÑALES DE BOMBEO DE DIODO LASER, O ENERGIA DE LA FIBRA DE AMPLIFICACION A LA FIBRA DE TRANSMISION. EL SEGUNDO TIPO DE CAMPO EVANESCENTE DE ACOPLADOR DE FIBRA SE DISEÑA PARA ACOPLAR SUSTANCIALMENTE LA TOTALIDAD DE LA ENERGIA DE LA SEÑAL EN LA FIBRA DE AMPLIFICACION A LA FIBRA DE TRANSMISION Y SUSTANCIALMENTE NO SE TRANSFIERE NINGUNA ENERGIA DE BOMBEO DE DIODO LASER DESDE LA FIBRA DE AMPLIFICACION A LA FIBRA DE TRANSMISION. CUALQUIERA, O AMBOS, EXTREMOS CORTADOS DE LA FIBRA DE TRANSMISION SE PUEDEN ACOPLAR A LOS DISPOSITIVOS DE CONTROL PARA DETECTAR Y DETERMINAR EL VALOR DE LA SEÑAL QUE SE ESTA ACOPLANDO DENTRO Y/OFUERA DE LA FIBRA DE AMPLIFICACION PARA CONTROLAR, POR EJEMPLO, LA GANANCIA DE LA FIBRA DE AMPLIFICACION.
ES90308536T 1989-08-08 1990-08-02 Sistema optico de comunicacion. Expired - Lifetime ES2087893T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/390,864 US4963832A (en) 1989-08-08 1989-08-08 Erbium-doped fiber amplifier coupling device

Publications (1)

Publication Number Publication Date
ES2087893T3 true ES2087893T3 (es) 1996-08-01

Family

ID=23544252

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90308536T Expired - Lifetime ES2087893T3 (es) 1989-08-08 1990-08-02 Sistema optico de comunicacion.

Country Status (6)

Country Link
US (1) US4963832A (es)
EP (1) EP0412727B1 (es)
JP (1) JP2933998B2 (es)
CA (1) CA2020759C (es)
DE (1) DE69027378T2 (es)
ES (1) ES2087893T3 (es)

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KR940001043B1 (ko) * 1989-07-20 1994-02-08 스미도모덴기고오교오 가부시기가이샤 파이버형 광증폭기
JP3137632B2 (ja) * 1989-08-31 2001-02-26 富士通株式会社 光ファイバ増幅器を備えた光通信方式
JP3062204B2 (ja) * 1989-10-13 2000-07-10 三菱電線工業株式会社 光増幅器
IT1236632B (it) * 1989-10-24 1993-03-25 Pirelli Cavi Spa Amplificatore per linee di telecomunicazioni a fibre ottiche e linee di telecomunicazioni a fibre ottiche incorporanti detto amplificatore
IT1237135B (it) * 1989-10-30 1993-05-24 Pirelli Cavi Spa Gruppo di amplificazione ottico a basso rumore, con riflessione della potenza di pompaggio.
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US5638204A (en) * 1990-01-22 1997-06-10 Pirelli Cavi S.P.A. Optical power amplifier with Al2 O3 and erbium doped active fiber
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US5151908A (en) * 1990-11-20 1992-09-29 General Instrument Corporation Laser with longitudinal mode selection
GB9025207D0 (en) * 1990-11-20 1991-01-02 British Telecomm An optical network
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GB2253071A (en) * 1991-02-20 1992-08-26 Telecommunication Lab Director Fibre star amplifier coupler
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US5216728A (en) * 1991-06-14 1993-06-01 Corning Incorporated Optical fiber amplifier with filter
JP2693662B2 (ja) * 1991-07-16 1997-12-24 株式会社東芝 光増幅装置
JP2806092B2 (ja) * 1991-08-28 1998-09-30 日本電気株式会社 光増幅器
US5227913A (en) * 1991-09-11 1993-07-13 Wisconsin Alumni Research Foundation Co-deposition of erbium and titanium into lithium niobate and optical amplifier produced thereby
US5173957A (en) * 1991-09-12 1992-12-22 At&T Bell Laboratories Pump redundancy for optical amplifiers
US5185826A (en) * 1992-02-07 1993-02-09 At&T Bell Laboratories Hybrid pumping arrangement for doped fiber amplifiers
GB2268621B (en) * 1992-06-27 1995-11-22 Northern Telecom Ltd Optical fibre amplifier
US5223705A (en) * 1992-08-12 1993-06-29 At&T Bell Laboratories Measurement of an optical amplifier parameter with polarization
US5253104A (en) * 1992-09-15 1993-10-12 At&T Bell Laboratories Balanced optical amplifier
DE4315846A1 (de) * 1993-03-30 1994-10-06 Sel Alcatel Ag Faseroptischer Verstärker
US5579143A (en) * 1993-06-04 1996-11-26 Ciena Corporation Optical system with tunable in-fiber gratings
US5600473A (en) * 1993-06-04 1997-02-04 Ciena Corporation Optical amplifier systems with add/drop multiplexing
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Also Published As

Publication number Publication date
JPH0371116A (ja) 1991-03-26
CA2020759C (en) 1994-02-15
DE69027378T2 (de) 1996-11-28
US4963832A (en) 1990-10-16
EP0412727A3 (en) 1992-01-29
JP2933998B2 (ja) 1999-08-16
CA2020759A1 (en) 1991-02-09
DE69027378D1 (de) 1996-07-18
EP0412727A2 (en) 1991-02-13
EP0412727B1 (en) 1996-06-12

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