Flat gain spectrum design of Raman fiber amplifiers based on particle swarm optimization and average power analysis technique

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• 作者：Hai Ming  ; Jiang^a ;   ; ^{dddyxj@sina.com} ; Kang  ; Xie^a ; Ya Fei  ; Wang^b
• 关键词：Flat gain spectrum ; Raman fiber amplifiers ; Particle swarm optimization ; Average power analysis technique
• 刊名：Optics and Lasers in Engineering
• 出版年：2012
• 出版时间：February 2012
• 年：2012
• 卷：50
• 期：2
• 页码：226-230
• 全文大小：456 K

文摘

In this work, the modified particle swarm optimization is used as an optimization tool to determine the set of wavelengths and power levels of pumps that delivers a flat gain spectrum for Raman fiber amplifiers. The average power analysis technique is used as a numerical method to solve the coupled Raman amplifier equations. By combining the modified particle swarm optimization and average power analysis technique an efficient algorithm for the design of flat-gain-spectrum broadband Raman fiber amplifiers is constructed. Application of this algorithm to the design of flat-gain-spectrum broadband Raman fiber amplifiers shows that the design efficiency of the new method is improved by 1? orders of magnitude compared with similar implementations previously reported in the literature. A 4-backward-pump gain-flattened Raman amplifier with bandwidth of 100-nm and maximum gain ripple of <1.0 dB is designed to demonstrate the technique.