KR870005261A - 광 전력 결합장치 및 그를 이용한 광 파이버 통신 시스템 - Google Patents

광 전력 결합장치 및 그를 이용한 광 파이버 통신 시스템 Download PDF

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KR870005261A
KR870005261A KR860009344A KR860009344A KR870005261A KR 870005261 A KR870005261 A KR 870005261A KR 860009344 A KR860009344 A KR 860009344A KR 860009344 A KR860009344 A KR 860009344A KR 870005261 A KR870005261 A KR 870005261A
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fiber
optical
radiation
optical fiber
wavelength
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에실리 애버슨 2세 제임스
아더 화이트 이안
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오레그이. 앨버
아메리칸 텔리폰 앤드 텔레그라프 캄파니
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    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/0208—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response
    • G02B6/02085—Refractive index modulation gratings, e.g. Bragg gratings characterised by their structure, wavelength response characterised by the grating profile, e.g. chirped, apodised, tilted, helical
    • G02B6/02095—Long period gratings, i.e. transmission gratings coupling light between core and cladding modes
    • 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
    • H04B10/25—Arrangements specific to fibre transmission
    • 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
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/14—Mode converters
    • 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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29305—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
    • G02B6/29311—Diffractive element operating in transmission
    • 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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29305—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
    • G02B6/29313—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide characterised by means for controlling the position or direction of light incident to or leaving the diffractive element, e.g. for varying the wavelength response
    • G02B6/29314—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide characterised by means for controlling the position or direction of light incident to or leaving the diffractive element, e.g. for varying the wavelength response by moving or modifying the diffractive element, e.g. deforming
    • 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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
    • G02B6/29317—Light guides of the optical fibre type
    • 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
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29344—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by modal interference or beating, i.e. of transverse modes, e.g. zero-gap directional coupler, MMI
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0126—Opto-optical modulation, i.e. control of one light beam by another light beam, not otherwise provided for in this subclass
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0128—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects
    • G02F1/0131—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence
    • G02F1/0134—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on electro-mechanical, magneto-mechanical, elasto-optic effects based on photo-elastic effects, e.g. mechanically induced birefringence in optical waveguides
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/05—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect with ferro-electric properties
    • G02F1/0541—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect with ferro-electric properties using photorefractive effects
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02071—Mechanically induced gratings, e.g. having microbends
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02114—Refractive index modulation gratings, e.g. Bragg gratings characterised by enhanced photosensitivity characteristics of the fibre, e.g. hydrogen loading, heat treatment
    • G02B6/02119—Photosensitivity profiles determining the grating structure, e.g. radial or longitudinal
    • G—PHYSICS
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    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
    • G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
    • G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
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  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

내용 없음

Description

광 전력 결합장치 및 그를 이용한 광 파이버 통신 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 중간 파이버 영역에서의 광 전력의 인입 및 인출을 위한 수단으로 이루어진 표본의 파이버 가이드 통신 시스템의 개요도.
제7도는 광 굴절 변조기로 이루어진 표본의 통신 시스템의 개요도.
제8도는 광 굴절 변조기를 나타낸 도면.
* 도면의 주요부분에 대한 부호의 설명
11 : 전자 방사원 13 : 검출기, 17 : 수신수단, 20 : 방사원, 25 : 방사원, 26 : 수신수단

Claims (21)

  1. 코아와 코아를 둘러싸는 크래딩으로 이루어지며, 파이버내에 존재할 수 있는 방사의 각 모드 LPij에 대해 감쇄상수 αij및 전파상수 βij를 포함하는 (여기에서, i는 비-네가티브 정수이며, j는 포지티브 정수이다)광 특성을 갖는 광 파이버의 중간 부분내로 그리고 중간 부분으로부터 파장 λ0의 전자 방사를 결합하기 위한 수단에 있어서,
    파이버가 파장 λ0에서 단일 모드광 파이버이며, 결합 수단이 N소자로 이루어진 "회절 격자"를 파이버의 중간 부분내에 형성하기 위한 수단으로 이루어지며, 회절 격자는 파이버의 부분으로, 여기에서 하나이상의 파이버 파라미터가 파이버의 축 좌표 z의 함수에 다라 변화되도록 야기되며, 파이버 파라미터가 정격 반복거리 ∧(z)와 정격 진폭함수 g(z)인 회절 격자에 연관된 코아 굴절율과 파이버축 기하학을 포함하며 Λ(z)가가 되도록 선택되며, 여기에서,는 회절 격자내 평균 반복거리이며, β1은 LP방사 모드의 전파상수이며, n1은 파이버의 크래딩의 굴절율이며, Λ(z)는 또한 Ω0∼β1-βrs가 되도록 선택되며, 여기에서 βrs는 LPrs모드의 방사의 전파상수이며, LPrs는 파이버내 파장 λ0의 관통누설(TL)방사 모드이며, LPrs모드의 감쇄상수 αrs가 약 1dB/cm 보다 작은 것을 특징으로 하는 광 전력 결합 장치.
  2. 제1항에 있어서, 회절 격자를 형성하는 수단이 파이버 축상에 기복을 각인하는 수단 또는 코아 굴절율을 부분적으로 변화시키기 위한 수단으로 이루어진 것을 특징으로 하는 광 전력 결합 장치.
  3. 제1항에 있어서, LPrs모드가 LP11모드인 것을 특징으로 하는 광 전력 결합 장치.
  4. 제1항에 있어서, 정격 진폭함수 g(z)가 상수인 것을 특징으로 하는 광 전력 결합 장치.
  5. 제1항에 있어서, 정격 진폭 함수 g(z)가 z의 가우시안 함수에 비례하는 것을 특징으로 하는 광 전력 결합 장치.
  6. 제1항에 있어서, 정격 반복 거리 Λ(z)가 상수인 것을 특징으로 하는 광 전력 결합 장치.
  7. 제2항에 있어서, 파이버축상에 기복을 각인하는 수단이 적어도 하나의 골이 형성된 몸체와 상기 파이버에 대항하여 골이 형성된 몸체를 좨채는 수단으로 이루어진 것을 특징으로 하는 광 전력 결합 장치.
  8. 제2항에 있어서, 코아 굴절율을 부분적으로 변화시키는 수단이, 코아내에 존재하는 광-굴절 활동화학 소자와, 파이버 코아를 화학선 방사에 노출시켜 파이버의 굴절율이 광-굴절효과에 의해 변화되도록 하는 수단으로 이루어진 것을 특징으로 하는 광 전력 결합 장치.
  9. 제2항에 있어서, 코아 굴절율을 부분적으로 변화시키는 수단이 적어도 하나의 골이 형성된 몸체와, 파이버에 대항하여 골이 형성된 몸체를 좨채도록 하므로써 파이버 코아의 굴절율이 광-탄성 효과에 의해 변화될 수 있도록 하기 위한 수단으로 이루어진 것을 특징으로 하는 광 전력 결합 장치.
  10. 제1항에 있어서, 적어도 파이버의 중간 부분이 파장 λ0의 전자 방사에 대해 실제적으로 투명한 재료로 피복되는 것을 특징으로 하는 광 전력 결합 장치.
  11. 제2항에 있어서, 파이버의 크래딩으로부터 방사의 방출을 향상시키기 위한 수단을 더 구비하는 것을 특징으로 하는 광 전력 결합 장치.
  12. 제11항에 있어서, 크래딩으로부터 방사의 방출을 향상시키기 위한 수단이 회절 격자로부터 파이버 다운 스트림을 접촉시키는 유전 몸체로 이루어지며, 유전 몸체가 실제적으로 파장 λ0의 방사에 대해 투명한 것을 특징으로 하는 광 전력 결합 장치.
  13. 제11항에 있어서, 크래딩으로부터 방사의 방출을 향상시키기 위한 수단이 회절 격자로부터 파이버다운 스트림내에 매크로벤드를 도입시키기 위한 수단으로 이루어진 것을 특징으로 하는 광 전력 결합 장치.
  14. 파장 λ0의 제1전자 방사원, 코아와 코아를 둘러싼 크래딩으로 이루어지며, 파이버내에 존재할 수 있는 제1방사의 각 모드 LPij에 대해 감쇄상수 αij와전파상수 βij(여기에서, i는 비-네가티브 정수이며, j는 포지티브 정수이다)를 포함한 광 특성을 갖는 파이버를 통해 제1파이버 위치로부터 제2파이버 위치로 전송되는 제1방사를 안내하기 위해 채택되는 광 파이버와, 제1파이버 위치에서 파이버내로 제1방사를 결합하기 위한 제1수단과, 파이버를 절단시키거나 종단시킴이 없이 제1 및 제2파이버 위치 중간인 제3파이버 위치에서 파이버내로 또는 파이버로부터 제1방사를 결합하기 위한 제2수단으로 이루어진 광 통신 시스템에 있어서, 파이버가 파장 λ0에서 단일 모드광 파이버이며, 결합 수단이 N소자로 이루어진 "회절 격자"를 파이버의 중간 부분내에 형성하기 위한 수단으로 이루어지며, 회절 격자는 파이버의 부분으로, 여기에서 하나이상의 파이버 파라미터가 파이버의 축 좌표 z의 함수에 따라 변화되도록 야기되며, 파이버 파라미터가 정격 반복거리 Λ(z)와 정격 진폭 함수 g(z)인 회절 격자에 연관된 코아 굴절율과 파이버축 기하학을 포함하며, ∧(z)가 Ω0=(2π/)〉β1-2πn1/λ0가 되도록 선택되며, 여기에서,는 회절 격자내 평균 반복거리이며, β1은 LP방사 모드의 전파상수이며, n1은 파이버의 크래딩의 굴절율이며, Λ(z)는 또한 Ω0=β1-βrs가 되도록 선택되며, 여기서는 βrs, LPrs모드의 방사의 전파상수이며, LPrs는 파이버내 파장 λ0의 관통누설(TL)방사 모드이며, LPrs모드의 감쇄상수 αrs가 약 1dB/cm 보다 작은 것을 특징으로 하는 광 파이버 통신 시스템.
  15. 제14항에 있어서, 제2수단이 가변 감쇄기를 형성하는 것을 특징으로 하는 광 파이버 통신 시스템.
  16. 제14항에 있어서, 제2수단이 파이버내에 회절 격자를 형성하기 위한 골 형성 수단으로 이루어진 클램프-온 수단과, 파이버에 대항하여 골 형성 수단을 좨채기 위한 수단과, 제3파이버 위치에서 파이버로부터 방출된 제1방사를 검출하기 위한 수단으로 이루어진 것을 특징으로 하는 광 파이버 통신 시스템.
  17. 제14항에 있어서, 전자 방사원이 λ0와 다른 파장의 전자 방사를 방출하며, 제1수단이 제1파이버 위치에서 파이버내로 λ0와 다른 파장의 방사중 일부를 결합시키도록 채택되며, 제2수단이 파이버로부터 제1방사중 일부를 선택적으로 결합시키도록 채택되는 필터를 형성하는 것을 특징으로 하는 광 파이버 통신 시스템.
  18. 광 신호를 발생하기 위한 수단으로 이루어진 제1단말 스테이션 및 광 신호를 수신하기 위한 수단으로 이루어진 제2단말 스테이션과, 신호분배 수단과, 제1단말 스테이션으로부터 신호 분배 수단으로 광신호를 전송하기 위해 채택된 제1광 파이버 전송 채널과, 제1단말 스테이션에서 제1광 파이버 전송 채널내로 광 방사를 결합하는 수단과, 신호 분배 수단으로부터 제2단말 스테이션으로 광 신호를 전송하기 위해 채택된 제2광 파이버 전송 채널로 이루어진 광 파이버 통신 채널에 있어서, 광 신호를 발생하는 수단이, 제1광 파이버 통신 채널내로 CW광 방사를 결합시키기 위해 제공하는 파장 λ0의 방사로 이루어진 일정진폭의 CW(연속파) 광 방사원과, 제1광 파이버 통신 채널의 중간 부분으로부터 파장 λ0의 광 방사를 결합하는 제1수단으로 이루어지며, 적어도 제1 광 파이버 전송 채널의 중간 부분이 광 굴절 활동 소자를 포함하는 광 파이버의 길이로 이루어지며, 상기 제1수단이, 화학선 방사를 발생시키는 수단과, 화학선 방사의 강도가 광 파이버의 길이 부분에서 주기적으로 또는 모의-주기적으로 이간된 최대치 N(여기에서 N은 1보다 큰 정수)을 갖도록 화학선 방사에 따라 광 파이버의 적어도 일부분에서 조사시키기 위한 수단과, 제1수단에 제공된 전자 신호에 응답하여 화학선 방사의 강도를 변화시켜, 광 파이버의 길이의 부분에서 광 파이버의 굴절율 이광 굴절식으로 변화하도록 하며, 따라서, 광 파이버내의 파장 λ0의 광 방사의 강도가 전기 신호에 응답하여 변화되도록 하는 수단으로 이루어진 것을 특징으로 하는 광 파이버 통신 시스템.
  19. 제18항에 있어서, 신호 분배 수단이 다수의 신호 스위칭 스테이션
    각각은 광 파이버 전송채널에 의해, 적어도 하나의 다른 신호 스위칭 스테이션에 접속되는 것을 특징으로 하는 광 파이버 통신 시스템.
  20. 제19항에 있어서, 제1단말 스테이션이 또한, 광 신호를 수신하기 위한 수단으로 이루어지며, 제2단말 스테이션이 광 신호를 발생하는 수단으로 이루어지며, 제1, 제2 광 파이버 전송채널이 제1, 제2단말 스테이션으로 그리고 그들로부터 광 신호를 전송하기 위해 채택되는 것을 특징으로 하는 광 파이버 통신 시스템.
  21. 제18항에 있어서, 광 굴절활동 소자가 Fe 및 Bi로 이루어진 그룹으로부터 선택되는 것을 특징으로 하는 광 파이버 통신 시스템.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019860009344A 1985-11-06 1986-11-06 전자 방사 결합 장치 및 그를 구비한 광 파이버 통신 시스템 KR950009564B1 (ko)

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US06/795,482 US4749248A (en) 1985-11-06 1985-11-06 Device for tapping radiation from, or injecting radiation into, single made optical fiber, and communication system comprising same
US795,482 1985-11-06
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US4749248A (en) 1988-06-07
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