Bending characteristics of a long-period fiber grating in a hollow eccentric optical fiber

被引：23

作者：

Zhong, Xing ^{[1
]}

Guan, Chunying ^{[1
]}

Mao, Guopei ^{[1
]}

Fu, Jianan ^{[1
]}

Liu, Yang ^{[1
]}

Shi, Jinhui ^{[1
]}

Yuan, Libo ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Sci, Minist Educ, Key Lab In Fiber Integrated Opt, Harbin 150001, Peoples R China

来源：

APPLIED OPTICS | 2015年 / 54卷 / 26期

基金：

中国国家自然科学基金;

关键词：

REFRACTIVE-INDEX; SENSOR; WRITTEN; NANOWIRES;

D O I：

10.1364/AO.54.007879

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, the bending characteristics of a long-period fiber grating (LPFG) in a hollow eccentric optical fiber (HEOF) have been investigated. Two samples fabricated under different laser exposure directions have been studied experimentally. The results show that the HEOF-LPFG can distinguish specific bending directions. The resonant peak shifts linearly with increasing curvature, but its sensitivity is lower than that of the LPFGs in single-mode fibers. In addition, the exposure direction shows a great influence on the bending characteristics due to the asymmetry of the fiber core. Furthermore, the responses of the HEOF-LPFG to temperature, axial strain, and external refractive index have been measured. (C) 2015 Optical Society of America

引用

页码：7879 / 7883

页数：5

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