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JPH09211507A Expired / Lapsed JP ⏱️ 0.0 years remaining

Optical equalization amplifier and optical equalization amplification method

Assignee: Fujitsu Ltd
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Filing: 1996-02-07
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Granted: —
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Expires: 2016-02-07
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Abstract

Abstract Translated from Japanese (57)【要約】 【課題】 波長多重光を増幅するときに、複数の波長成 分の光レベルを等化するとともに光出力レベルを一定に する光等化増幅器を提供する。 【解決手段】 可変光減衰器11は、AGBC回路12 の制御に従って波長多重光を減衰させる。希土類ドープ ファイバ21は、光源26が生成する励起光によって励 起され、可変光減衰器11から出力される波長多重光を 増幅する。ALC回路25は、希土類ドープファイバ2 1から出力される波長多重光の平均光レベルが一定にな るように光源26を制御する。波長多重カプラ27は、 希土類ドープファイバ21によって増幅された波長多重 光から特定の2つの波長の光を取り出す。AGBC回路 12は、上記2つの波長の光レベルが互いに一致するよ うに可変光減衰器11の減衰量を制御する。 (57) Abstract: An optical equalization amplifier that equalizes the optical levels of a plurality of wavelength components and a constant optical output level when amplifying wavelength multiplexed light. A variable optical attenuator includes an AGBC circuit. The wavelength multiplexed light is attenuated under the control of. The rare-earth-doped fiber 21 is excited by the excitation light generated by the light source 26 and amplifies the wavelength-multiplexed light output from the variable optical attenuator 11. The ALC circuit 25 includes the rare earth-doped fiber 2 The light source 26 is controlled so that the average light level of the wavelength-multiplexed light output from 1 becomes constant. The wavelength multiplexing coupler 27 is Light of two specific wavelengths is extracted from the wavelength multiplexed light amplified by the rare earth-doped fiber 21. The AGBC circuit 12 controls the attenuation amount of the variable optical attenuator 11 so that the light levels of the two wavelengths match each other.

Inventors

  • 👤 Yasushi Sugaya
  • 👤 靖 菅谷

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 17:33
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/29; H04B10/291; H04B10/293; H04B10/294; H04B10/2941; H01; H01S; H01S3/00; H01S3/10; H01S3/13; H01S3/1301; H01S3/13013; H04B10/07; H04B10/075; H04B10/077; H04B10/079; H04B10/0795; H04B10/07955; H04J; H04J14/00; H04J14/02; H04J14/0221; H01S2301/00; H01S2301/04; H01S2301/06; H01S3/05; H01S3/06; H01S3/063; H01S3/067; H01S3/06754; H01S3/06758; H01S3/06787; H01S3/09; H01S3/091; H01S3/094; H01S3/094003

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