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Proceedings Paper

Gain adjustment of multipump Raman fiber amplifier without changing the gain profile
Author(s): Ji-Ping Ning; Qun Han; Zhi-Qiang Chen; Xiao-Guang Li; Jia-Qiang Li
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Paper Abstract

A new method of gain adjustment of multipump Raman fiber amplifier is proposed and numerically demonstrated. The method utilizes the areas under the pump power evolution curves along the gain fiber as a criterion and the Newton-Raphson method is used to find the appropriate power combination of the pumps to realize the desired gain profile. The proposed method has two merits: First, it can maintain the gain profile while changing the gain magnitude to the desired value; second, it is independent of the actual scheme of the amplifier, i.e. it can be used in Raman fiber amplifiers with all kinds of pumping schemes including co-, counter-, or bi-directional pumping. Numerical simulation results are also provided to verify the proposed method and demonstrate its effectiveness.

Paper Details

Date Published: 10 January 2005
PDF: 6 pages
Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); doi: 10.1117/12.577311
Show Author Affiliations
Ji-Ping Ning, Tianjin Univ. (China)
Qun Han, Tianjin Univ. (China)
Zhi-Qiang Chen, Tianjin Univ. (China)
Xiao-Guang Li, Tianjin Univ. (China)
Jia-Qiang Li, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 5623:
Passive Components and Fiber-based Devices
Yan Sun; Shuisheng Jian; Sang Bae Lee; Katsunari Okamoto, Editor(s)

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