摘要
利用数值算法计算了掺镱双包层光纤放大器分段泵浦方式下的稳态速率方程组,分析比较了双端泵浦和多段泵浦方式下的最佳光纤长度,最高温度和效率,并采用遗传算法对分布泵浦功率的大小和每段光纤长度同时进行了优化。结果表明,通过优化,大功率分段泵浦光纤放大器获得了较为平坦的温度分布,与双端泵浦相比,大大降低了最高工作温度,斜率效率略有下降。
The time independent rate equations for fiber amplifier is solved by numerical method. Optimal fiber length , maximum operating temperature and slope efficiency under bidirectional end pump and distributed pump are discussed. A novel method based on genetic algorithm is proposed to optimize pump powers and the fiber segment lengths of a kilowatt YDDC fiber amplifier. The calculated results indicate that lower operating temperature and better uniformity can be obtained by utilizing the distributed pump and optimizing the arrangement of pump powers and fiber lengths.
出处
《光学技术》
EI
CAS
CSCD
北大核心
2007年第6期833-836,共4页
Optical Technique
基金
北京自然科学基金资助项目(4052023)
北京交通大学科学技术基金资助项目(2004RC073)
北京交通大学专项研究员基金资助项目(48101)
关键词
掺镱双包层光纤放大器
热效应
分段泵浦
遗传算法
laser techniques
fiber power amplifier
ytterbium-doped
double-clad
thermal effects
distributed pump
ge-netic algorithm
