JPH0377967B2 - - Google Patents

Info

Publication number
JPH0377967B2
JPH0377967B2 JP57210966A JP21096682A JPH0377967B2 JP H0377967 B2 JPH0377967 B2 JP H0377967B2 JP 57210966 A JP57210966 A JP 57210966A JP 21096682 A JP21096682 A JP 21096682A JP H0377967 B2 JPH0377967 B2 JP H0377967B2
Authority
JP
Japan
Prior art keywords
fiber
optical fiber
light
input
signal light
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
JP57210966A
Other languages
Japanese (ja)
Other versions
JPS59101629A (en
Inventor
Yasuhiro Aoki
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.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP57210966A priority Critical patent/JPS59101629A/en
Publication of JPS59101629A publication Critical patent/JPS59101629A/en
Publication of JPH0377967B2 publication Critical patent/JPH0377967B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H01S3/13—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Lasers (AREA)

Description

【発明の詳細な説明】 本発明は増幅度を安定化させ光フアイバ内の誘
導散乱効果を用いたフアイバ内光増幅装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intra-fiber optical amplification device that stabilizes the amplification degree and uses the stimulated scattering effect within the optical fiber.

一般に、ホンピング光を光フアイバに入射させ
ると同時に、光フアイバの誘導散乱効果のひとつ
であり誘導ラマン散乱のラマン利得帯域内にある
波長の信号光を入射させると、誘導ラマン効果に
より信号光が増幅され、これをフアイバラマン増
幅という。この光フアイバを長さｌだけ伝搬した
後の信号光出力Ps（ｌ）は、その信号光入力をPs
（ｏ）とすると、次式で与えられる。 Generally, when homping light is input into an optical fiber, and at the same time a signal light whose wavelength is within the Raman gain band of stimulated Raman scattering, which is one of the stimulated scattering effects of optical fiber, is input, the signal light is amplified by the stimulated Raman effect. This is called Fuaibaraman amplification. The signal light output P s (l) after propagating through this optical fiber for a length l is the signal light input P s
(o), it is given by the following equation.

Ps（ｌ）＝Ps（ｏ）・exp（−αs・ｌ＋ｇ・Pp／Ａ・ Ｌ） ……(1) Ｌ＝１−e-〓p P s (l) = P s (o)・exp(−α s・l+g・P p /A・L) ……(1) L=1−e - 〓 p

Claims (1)

【特許請求の範囲】[Claims] １ 信号光を光フアイバの一端から入射させ、そ
の光フアイバの他端からポンピング光を入射させ
て、その光フアイバ内の誘導散乱効果によつて増
幅された信号光を前記ポンピング光と分離して取
り出すフアイバ内光増幅装置において、前記増幅
された信号光の受光出力の一部により、前記ポン
ピング光の前記光フアイバへの入力を制御してそ
の受光出力レベルを安定化する帰還回路を備えた
ことを特徴とするフアイバ内光増幅装置。1. Signal light is input from one end of an optical fiber, pumping light is input from the other end of the optical fiber, and the signal light amplified by the stimulated scattering effect within the optical fiber is separated from the pumping light. The intra-fiber optical amplification device for taking out the fiber includes a feedback circuit that controls input of the pumping light to the optical fiber and stabilizes the level of the received light output using a part of the received light output of the amplified signal light. An intra-fiber optical amplification device characterized by:
JP57210966A 1982-12-01 1982-12-01 Optical amplifying device in fiber Granted JPS59101629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57210966A JPS59101629A (en) 1982-12-01 1982-12-01 Optical amplifying device in fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57210966A JPS59101629A (en) 1982-12-01 1982-12-01 Optical amplifying device in fiber

Publications (2)

Publication Number Publication Date
JPS59101629A JPS59101629A (en) 1984-06-12
JPH0377967B2 true JPH0377967B2 (en) 1991-12-12

Family

ID=16598061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57210966A Granted JPS59101629A (en) 1982-12-01 1982-12-01 Optical amplifying device in fiber

Country Status (1)

Country Link
JP (1) JPS59101629A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0186299B1 (en) * 1984-12-13 1990-04-18 Stc Plc Optical amplifier
ES2044123T3 (en) * 1988-07-20 1994-01-01 American Telephone & Telegraph OPTICAL AMPLIFIER WITH REDUCED ALIGNMENT.
JPH02153327A (en) * 1988-12-06 1990-06-13 Oki Electric Ind Co Ltd Light amplification module
JP3137632B2 (en) * 1989-08-31 2001-02-26 富士通株式会社 Optical communication system with optical fiber amplifier
EP0768766B1 (en) * 1991-11-08 2001-07-04 Mitsubishi Denki Kabushiki Kaisha Optical fiber amplifier repeating system

Also Published As

Publication number Publication date
JPS59101629A (en) 1984-06-12

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