Gain adjustment of multipump Raman fiber amplifier without changing the gain profile

Ji-Ping Ning; Qun Han; Zhi-Qiang Chen; Xiao-Guang Li; Jia-Qiang Li

doi:10.1117/12.577311

10 January 2005 Gain adjustment of multipump Raman fiber amplifier without changing the gain profile

Ji-Ping Ning, Qun Han, Zhi-Qiang Chen, Xiao-Guang Li, Jia-Qiang Li

Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005) https://doi.org/10.1117/12.577311
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

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.

Citation Download Citation

Ji-Ping Ning, Qun Han, Zhi-Qiang Chen, Xiao-Guang Li, and Jia-Qiang Li "Gain adjustment of multipump Raman fiber amplifier without changing the gain profile", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); https://doi.org/10.1117/12.577311

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