Effects of twisting and bending on LP21 mode propagation in optical fiber

被引：19
|
作者：
Yuan, Yufeng [1 ]
Wu, George [1 ]
Li, Xian [1 ]
Fan, Yuqiang [1 ]
Wu, Xingkun [1 ]
机构：
[1] Zhejiang Univ, Dept Opt Engn, Hangzhou 310027, Peoples R China
来源：
OPTICS LETTERS | 2011年 / 36卷 / 21期
基金：
中国国家自然科学基金;
关键词：
SPECKLEGRAM SENSOR;
D O I：
10.1364/OL.36.004248
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Twisting and bending characteristics of low-multimode LP21 mode propagation in optical fibers is presented for the first time. Theoretical fiber mode modeling, combining geometrical rotation with opto-elastic effects, demonstrates that the propagation of the LP21 mode is bending-effect-immune. Experimental testing verifies that the LP21 mode specklegram rotates 0.9112 of the fiber twist angle in a fused silica fiber, independent of any fiber bending. This characteristic allows for the LP21 mode to be highly applicable in fiber specklegram sensors. (C) 2011 Optical Society of America
引用
收藏
页码：4248 / 4250
页数：3
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