Erbium-doped fiber amplifier with mid-stage access and automatic gain calibration
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Corresponding author:
REN Hai-lan, renhl@wri.com.cn
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Received Date:
2012-10-22
Accepted Date:
2013-01-29
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Abstract
In order to adjust the gain automatically under different environmental conditions, an erbium-doped fiber amplifier (EDFA) with mid-stage access was introduced, which had two amplifier stages and variable gain within a certain range. To achieve the purpose of automatic gain adjustment, the method of automatic gain calibration was adopted. After theoretical analysis and experimental verification, the data of gain calibration and verification of the EDFA with mid-stage access were obtained. The results show that the data of automatic calibration has high accuracy. This research is helpful for EDFA to achieve automatic gain control rapidly and exactly.
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