光子学报, 2015, 44 (10): 1006007, 网络出版: 2015-11-30
随路遥泵系统二阶泵浦方式泵浦性能分析与优化
Analysis and Optimization of Pump Performance of ROPA System with Channel Associated Structure Using the 2nd-order Pump
光纤通信技术 随路遥泵系统 二阶泵浦 滤波隔离 混合型光纤 光谱 多径干扰 Optical fiber communication technology Remote pumped optical amplifier system with channe 2nd-order pump Filter and isolator Hybrid fiber Optical spectrum Multipath interference
摘要
为了解决随路遥泵系统采用传统二阶泵浦方式时出现自激的问题,提出了基于滤波隔离技术的降低多径干扰方案和基于混合型光纤技术的降低非线性系数方案.滤波隔离技术通过将滤波隔离单元放置于光纤线路中来有效改善多径干扰现象;混合型光纤技术通过采用大的有效面积光纤和普通光纤混合结构降低非线性效应.理论分析表明减少泵浦光的多次反射可减弱多径干涉;增加光纤有效面积可以降低非线性系数.实验结果表明:采用由波分复用器和隔离器组成的滤波隔离单元,进入远程增益单元的泵浦功率可提高1.2 dB;采用20 km EX2000和80 km G.652混合型光纤结构,进入远程增益单元的泵浦功率可提高1 dB.该研究对降低自激影响的随路二阶泵浦的研制和应用具有一定意义.
Abstract
The scheme of multipath interference reduction based on filter and isolation technology and the scheme of nonlinear coefficient reduction based on hybrid-type optical fiber technology were proposed,which can overcome self-excited phenomenon of remote pumped optical amplifier system with channel associated structure using the traditional 2nd-order pump. Filter and isolation technology can improve multipath interference by placing the filter and isolation unit in the fiber lines. Hybrid structures of ordinary fiber and large effective area fiber can reduce the nonlinear effect when using hybrid-type optical fiber. Theoretical analysis draw a conclusion that multipath interference can be reduced by decreasing multiple reflections of the pump,and nonlinear coefficient can be reduced by increasing the effective area of fiber. The experimental results show that unit the pump power accessed to the remote gain unit is increased by 1.2 dB using filter and isolation unit,and 1 dB using hybrid-type fiber structure with 20 km EX2000 fiber and 80 km G.652 fiber. The research contributes to the realization and application of reducing the effects of self-excited of second-order pump with channel associated structure.
徐健, 黄丽艳, 喻杰奎, 胡毅, 贾小铁, 雷学义. 随路遥泵系统二阶泵浦方式泵浦性能分析与优化[J]. 光子学报, 2015, 44(10): 1006007. XU Jian, HUANG Li-yan, YU Jie-kui, HU Yi, JIA Xiao-tie, LEI Xue-yi. Analysis and Optimization of Pump Performance of ROPA System with Channel Associated Structure Using the 2nd-order Pump[J]. ACTA PHOTONICA SINICA, 2015, 44(10): 1006007.