二阶拉曼光纤放大器增益特性研究  

Research on Gain Characteristics of Second-order Raman Fiber Amplifier

作　　者：巩稼民 张玉蓉 徐军华 田宁 毛俊杰 何佳蔓 徐雨田 尤晓磊 GONG Jia-min;ZHANG Yu-rong;XU Jun-hua;TIAN Ning;MAO Jun-jie;HE Jia-man;XU Yu-tian;YOU Xiao-lei(College of Communication and Information Engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China)

机构地区：[1]西安邮电大学通信与信息工程学院,西安710121

出　　处：《光子学报》2020年第8期24-32,共9页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61775180)。

摘　　要：为实现较大放大带宽,同时提高输出增益并保持较小的增益平坦度,设计了一种二阶拉曼光纤放大器,采用一个二阶泵浦和四个一阶泵浦对100路信号光进行分布式拉曼放大.首先对二阶拉曼耦合波方程进行数值求解,为进一步提高输出性能,利用粒子群优化算法对二阶拉曼光纤放大器的性能参数进行了优化,然后在相同泵浦参数配置下,对一阶拉曼光纤放大器和二阶拉曼光纤放大器进行对比,最后对二阶拉曼放大器输出增益的影响因素进行分析.通过Matlab仿真,在1510~1610 nm的增益带宽范围内所设计的二阶拉曼光纤放大器的平均输出增益为23.7680 dB,最高输出增益为24.1244 dB,同时增益平坦度为0.9112 dB.In order to achieve a larger amplification bandwidth,while increasing the output gain and maintaining a small gain flatness,a second-order Raman fiber amplifier is designed,which used a secondorder pump and four first-order pumps to perform distributed Raman amplification on 100 channels of signal light.First,numerically solve the second-order Raman coupled wave equation.Simultaneously,in order to further improve the output performance,the performance parameters of the second-order Raman fiber amplifier are optimized by using particle swarm optimization algorithm.Then,under the same pump parameter configuration,compare the first-order RFA with the second-order RFA.Finally,the factors affecting the output gain of the second-order Raman amplifier are analyzed.Through experimental simulation,within the 1510~1610 nm gain bandwidth range,the designed second-order Raman fiber amplifier has an average output gain of 23.7680 dB,a maximum output gain of 24.1244 dB and the gain flatness is 0.9112 dB.

关 键 词：拉曼光纤放大器 二阶泵浦 粒子群优化算法 平均增益 增益平坦度 

分 类 号：TN929.11[电子电信—通信与信息系统]