KR910015871A - 단일 모드로 만곡된 활성 섬유를 지니는 광증폭기 - Google Patents

단일 모드로 만곡된 활성 섬유를 지니는 광증폭기 Download PDF

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Publication number
KR910015871A
KR910015871A KR1019910002299A KR910002299A KR910015871A KR 910015871 A KR910015871 A KR 910015871A KR 1019910002299 A KR1019910002299 A KR 1019910002299A KR 910002299 A KR910002299 A KR 910002299A KR 910015871 A KR910015871 A KR 910015871A
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South Korea
Prior art keywords
fiber
active fiber
optical
wavelength
active
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KR1019910002299A
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English (en)
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KR0178393B1 (ko
Inventor
그라소 지오르지오
리그헤티 알도
Original Assignee
피에르 지오반니 지안네시
쏘시에떼 까비 피렐리 에스. 피. 에이
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Application filed by 피에르 지오반니 지안네시, 쏘시에떼 까비 피렐리 에스. 피. 에이 filed Critical 피에르 지오반니 지안네시
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Classifications

    • 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
    • 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
    • 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
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • 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
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/08018—Mode suppression
    • H01S3/0804—Transverse or lateral modes
    • H01S3/08045—Single-mode emission
    • 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
    • H01S3/094065—Single-mode pumping

Abstract

내용 없음

Description

단일 모드로 만곡된 활성 섬유를 지나는 광증폭기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 활성 섬유를 사용하는 광증폭기에 대한 도면, 제2도는 제1도에 따른 증폭기용으로 사용되며 유도방출을 발생시키는데 적합한 형태의 섬유의 에너지 전이를 보여주는 도면, 제3도는 펌핑, 전송 및 커트 오프(cutoff)파장의 관련성을 버여주는 도면.

Claims (8)

  1. 적어도 하나의 광 펌핑원(6), 전송 신호를 전달하는 광 섬유회선에 접속되며 상기 광 펌핑원에 접속된 2개의 입력을 지니는 다이크로 결합기(4), 및 상기 펌핑원의 파장으로 펌핑될 경우 상기 전송 신호의 파장 범위에서 방출을 제공하도록 광 코어에 형광 도우펀트를 포함하는 활성 섬유(7)의 한 단부에 접속된 출력(5)을 포함하는 광 증폭기, 특히 광섬유 원격 통신용 광증폭기에 있어서, 활성 광 섬유(7)는 실제로 직선으로 이루어진 구성에서는 전송 파장에서 단일 모드의 광 신호를 전파할 수 있고 덤핑 파장에서 다중 모드의 광 신호를 전파할 수 있으며 상기 펌핑 파장에서 기본 모드만을 섬유내에 전파할 수 있는 굴곡 반경을지니고서 적어도 전체 길이의 70%이상 만곡된 구성으로 배치된 광증폭기
  2. 제1항에 있어서, 상기 활성 섬유(7)는 20 - 140㎜의 범위에 걸려있는 굴록 반경으로 만곡된 광 증폭기.
  3. 제2항에 있어서, 상기 활성 섬유의 굴곡 반경이 35 및 100㎜ 사이에 있는 광 증폭기.
  4. 제1항에 있어서, 상기 전송 파장은 1520 내지 1570㎜의 범위에 걸쳐 있으며, 펌핑 파장은 980㎜(±10㎜)이고, 상기 활성 섬유내의 형광 도우펀트는 에르붐인 광증폭기.
  5. 제1항에 있어서, 상기 활성 섬유(7)는 상기 펌핑 파장에서 기본 모드만을 상기 섬유자체내에 전파시킬 수 있는 굴곡 반경을 지닌 적어도 하나의 만곡된 부분(11)을 지니며, 이러한 부분은 만곡되지않은 섬유부분(16)에 인접하고, 상기 만곡된 부분의 길이 또는 상기 만곡된 부분의 길이의 합은 상기 활성섬유의 전체 길이의 70% 이상인 광 증폭기.
  6. 제5항에 있어서, 상기 활성 섬유(7)는 상기 펌핑파장에서 기본 모드만을 상기 섬유자체내에 전파할수 있는 굴곡반경을 지닌 단일 연속의 만곡된 부분(11)을 지니며, 각각의 만곡되지 않은 부분(16)은 상기 활성 섬유의 단부중 한 단부 또는 상기 활성 섬유의 단부 각각에 존재하는 광 증폭기.
  7. 제6항에 있어서, 상기 활성 섬유(7)는 대체로 굴록이 얹으며 400㎜ 이하의 길이를 각기 지니는 활성 섬유의 단부(16)로 부터 이격된 활성 섬유의 전체 길이에 걸쳐 펌핑파장에서 기본 모드만을 상기 섬유 자체내에 전파시킬 수 있는 굴곡 반경으로 만곡된 광 증폭기.
  8. 제7항에 있어서, 대체로 굴곡이 없는 단부(16) 각각은 200㎜ 이하의 길이를 지니는 광 증폭기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910002299A 1990-02-12 1991-02-12 단일 모드로 만곡된 활성섬유를 지니는 광증폭기 KR0178393B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19341A/90 1990-02-12
IT01934190A IT1237980B (it) 1990-02-12 1990-02-12 Amplificatore ottico a fibra attiva monomodale incurvata

Publications (2)

Publication Number Publication Date
KR910015871A true KR910015871A (ko) 1991-09-30
KR0178393B1 KR0178393B1 (ko) 1999-05-15

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KR1019910002299A KR0178393B1 (ko) 1990-02-12 1991-02-12 단일 모드로 만곡된 활성섬유를 지니는 광증폭기

Country Status (26)

Country Link
US (1) US5161050A (ko)
EP (1) EP0442553B1 (ko)
JP (1) JP3239124B2 (ko)
KR (1) KR0178393B1 (ko)
CN (1) CN1024299C (ko)
AR (1) AR247795A1 (ko)
AT (1) ATE119690T1 (ko)
AU (1) AU642698B2 (ko)
BR (1) BR9100633A (ko)
CA (1) CA2034797C (ko)
CZ (1) CZ280356B6 (ko)
DE (1) DE69107872T2 (ko)
DK (1) DK0442553T3 (ko)
ES (1) ES2072523T3 (ko)
FI (1) FI104294B (ko)
HK (1) HK2596A (ko)
HU (1) HU216235B (ko)
IE (1) IE67357B1 (ko)
IT (1) IT1237980B (ko)
MY (1) MY105414A (ko)
NO (1) NO302326B1 (ko)
PE (1) PE17791A1 (ko)
PL (1) PL164373B1 (ko)
PT (1) PT96736B (ko)
RU (1) RU2086062C1 (ko)
SK (1) SK278814B6 (ko)

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Also Published As

Publication number Publication date
ES2072523T3 (es) 1995-07-16
PL289030A1 (en) 1991-08-26
CS9100300A2 (en) 1991-09-15
FI910649A0 (fi) 1991-02-11
DE69107872D1 (de) 1995-04-13
JPH04298724A (ja) 1992-10-22
EP0442553B1 (en) 1995-03-08
PE17791A1 (es) 1991-06-28
CA2034797A1 (en) 1991-08-13
IE910440A1 (en) 1991-08-14
IT1237980B (it) 1993-06-19
HU910420D0 (en) 1991-08-28
EP0442553A1 (en) 1991-08-21
PL164373B1 (pl) 1994-07-29
AU7081891A (en) 1991-08-15
NO910530D0 (no) 1991-02-11
FI104294B1 (fi) 1999-12-15
JP3239124B2 (ja) 2001-12-17
NO302326B1 (no) 1998-02-16
HU216235B (hu) 1999-05-28
NO910530L (no) 1991-08-13
MY105414A (en) 1994-09-30
SK278814B6 (sk) 1998-03-04
AU642698B2 (en) 1993-10-28
PT96736B (pt) 2001-08-30
HUT60398A (en) 1992-08-28
FI104294B (fi) 1999-12-15
RU2086062C1 (ru) 1997-07-27
FI910649A (fi) 1991-08-13
CN1054137A (zh) 1991-08-28
IE67357B1 (en) 1996-03-20
CZ280356B6 (cs) 1995-12-13
IT9019341A0 (it) 1990-02-12
ATE119690T1 (de) 1995-03-15
CA2034797C (en) 1997-12-30
KR0178393B1 (ko) 1999-05-15
CN1024299C (zh) 1994-04-20
US5161050A (en) 1992-11-03
DE69107872T2 (de) 1995-09-07
HK2596A (en) 1996-01-12
PT96736A (pt) 1992-12-31
IT9019341A1 (it) 1991-08-13
AR247795A1 (es) 1995-03-31
DK0442553T3 (da) 1995-07-24
BR9100633A (pt) 1991-10-29

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