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Erbium-doped fiber amplifier with controllable power control gain

An erbium-doped optical fiber and amplifier technology, which is applied in the field of optical communication, can solve the problems of large noise figure and poor gain flatness, and achieve the effect of reducing noise figure and improving signal amplification gain

Active Publication Date: 2017-05-31
JIANGSU HIMARK TECH
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  • Abstract
  • Description
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Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of erbium-doped fiber amplifier with controllable power clamping gain, which solves the technical problems of large noise figure and poor gain flatness in the prior art;

Method used

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  • Erbium-doped fiber amplifier with controllable power control gain
  • Erbium-doped fiber amplifier with controllable power control gain

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Embodiment

[0035] An erbium-doped fiber amplifier with controllable power clamping gain, comprising a first isolator 1, a first optical splitter 2, a first multiplexer 3, a first erbium-doped fiber 4, a second multiplexer 5, a second doped fiber Erbium optical fiber 6, second isolator 7, second optical splitter 8, controller 9, first photodetector 10 and second photodetector 11;

[0036] The input optical signal enters the first erbium-doped optical fiber 4 through the first isolator 1, the first optical splitter 2 and the first multiplexer 3, and the input terminal of the first photodetector 10 is connected to the first optical splitter 2 output terminal;

[0037] The input end of the controller 9 is respectively connected to the first photodetector 10 and the second photodetector 11, and the output end of the controller 9 is connected to the input end of the first multiplexer 3 via the pump laser 12;

[0038] The output end of the first erbium-doped optical fiber 4 is connected to the...

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Abstract

The invention discloses an erbium-doped fiber amplifier with controllable power control gain. The erbium-doped fiber amplifier comprises a first isolator, a first optical splitter, a first multiplexer, a first erbium-doped fiber, a second multiplexer, a second erbium-doped fiber, a second isolator, a second optical splitter, a controller, a first optical detector and a second optical detector. The erbium-doped fiber amplifier settles technical problems of high noise coefficient and low gain flatness in prior art.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an erbium-doped fiber amplifier with controllable power clamping gain. Background technique [0002] The basic principle of the Erbium-doped fiber amplifier is to use Er3+ ions in the Erbium-doped fiber to form population inversion under the excitation of pump light, and realize the amplification of stimulated emission light under the induction of signal light. The pump source usually adopts 980nm and 1480nm laser. The metastable state and ground state of Er3+ ions have a certain width, so that the amplification effect of EDFA has a certain wavelength range, and its typical value is 1530-1570nm. [0003] However, when Er3+ ions are in the metastable state, in addition to stimulated radiation and stimulated absorption, spontaneous emission will also occur, that is, Er3+ ions will spontaneously emit light when they stay in the metastable state for a short time before...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067
CPCH01S3/06754H01S3/06758
Inventor 任广阔
Owner JIANGSU HIMARK TECH
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