Influence of temperature distribution on stimulated Brillouin scattering in high power single-frequency fiber amplifiers

被引：3

作者：

Leng J. ^{[1
]}

Liu C. ^{[2
]}

Guo S. ^{[1
]}

Qi Y. ^{[2
]}

Xu X. ^{[1
]}

Zhao Y. ^{[1
]}

机构：

[1] College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha

[2] Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2010年 / 37卷 / 10期

关键词：

Fiber optics; Single-frequency fiber amplifier; Stimulated Brillouin scattering; Suppression; Temperature distribution;

D O I：

10.3788/CJL20103710.2491

中图分类号：

学科分类号：

摘要：

The influences of temperature distribution on stimulated Brillouin scattering (SBS) in high power single-frequency fiber amplifier are studied, based on the rate equations combining with SBS. The results indicate that temperature gradients along a fiber can broaden the SBS gain profile and thereby suppress SBS. The threshold of pump power and the output power of amplifier can be increased significantly by cooling fibers around the output port of amplifier actively. The length and location of fibers cooled to suppress SBS have the optima, which are influenced by pump power, temperature distribution and length of total fiber in amplifier. The threshold of pump power and output power of amplifier can be increased more than 2 times under the optimum condition.

引用

页码：2491 / 2496

页数：5