Bend-induced distortion in large mode area holey fibre

被引：0
|
作者：
Tan Xiao-Ling [1 ,2 ]
Geng You-Fu [1 ,2 ]
Zhang Tie-Li [1 ,2 ]
Wang Wei-Neng [1 ,2 ]
Wang Peng [1 ,2 ]
Yao Jian-Quan [1 ,2 ]
机构：
[1] Tianjin Univ, Inst Laser & Optoelect, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Minist Educ, Key Lab Optoelect Informat Sci & Technol, Tianjin 300072, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2008年 / 25卷 / 05期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A simplified scheme of bend-induced mode distortion is introduced into bent holey fibres, the distorted mode distribution and mode effective area reduction are investigated using the finite difference method. Numerical results show that the modes of bent holey fibres with small bend radius shift away from the core and are deformed greatly, and the mode areas drop significantly as the bend radius decreases, which severely affects the fibre laser performance. The propagation characteristics of bent holey fibres at given wavelength are determined by fill factor and normalized bend radius. Finally, the transition normalized bend radius that represents the location of the mode area beginning to fall off is obtained.
引用
收藏
页码：1661 / 1663
页数：3
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