掺镱光纤激光器分段抽运方式下温度分布的理论分析  

Temperature Distribution of Yb-Doped Fiber Laser Under Distributed Pumping

作　　者：王春灿[1] 张帆[1] 耿蕊[1] 万沙沙[1] 童治[1] 宁提纲[1] 简水生[1] 

机构地区：[1]北京交通大学光波所,北京100044

出　　处：《光学与光电技术》2007年第4期50-53,共4页Optics & Optoelectronic Technology

基　　金：北京自然科学基金项目(4052023);北京交通大学科技基金(2004RC073);专项研究基金(48101)资助项目

摘　　要：利用松弛迭代法数值求解分段抽运方式下光纤激光器的稳态速率方程组,提出了基于遗传算法对分段抽运的功率大小和光纤长度进行同时优化的方法从而实现了最佳温度分布,分析比较了双端抽运和多段抽运方式下的最佳光纤长度,最高工作温度和效率,研究表明,分段抽运方式较双端抽运方式,一方面最高工作温度大大降低并具有更为平坦的温度分布,另一方面由于最佳光纤长度的增加使得信号光衰减变大,从而导致效率略有下降。The set of steady-state rate equations is solved by using relaxation algorithm under the distributed pumping. Based on genetic algorithm, the optimixation method of power and fibre length under distributed pumping is presented to achieve the optimal temperature distribution. The optimal fibre length, the highest aperating temperature and efficiency and dual-end pumping and distributed pumping are analyzed and compared. On the one hand, the highest operating temperature is greatly reduced and it has flat temperature distribution, on the other hand, the increase of the optimal fibre length makes the signal light attenuation improve, which causes the efficiency reduce slightly.

关 键 词：掺镱双包层光纤激光器 热效应 松弛迭代法 遗传算法 

分 类 号：TN248.1[电子电信—物理电子学]