Temperature-insensitive directional bending sensors based on the interlaced tilted long-period gratings

被引：18

作者：

Huang, Lu ^{[1
]}

Meng, Xinyu ^{[1
]}

Zhao, Yunhe ^{[1
]}

Liu, Yunqi ^{[1
]}

机构：

[1] Shanghai Univ, Shanghai Inst Adv Commun & Data Sci, Joint Int Res Lab Specialty Fiber Opt & Adv Commu, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200444, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2019年 / 447卷

基金：

中国国家自然科学基金;

关键词：

Long-period fiber grating; Fiber grating sensor; Bending sensor; FIBER BRAGG GRATINGS; CURVATURE; WRITTEN; STRAIN;

D O I：

10.1016/j.optcom.2019.04.073

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the fabrication of the interlaced tilted long-period fiber grating (ITLPFG) using focused CO2 laser. Due to the asymmetric refractive index distribution, the grating has very weak sensitivity in the two opposite directions to reduce the influence on the other two bending directions with higher bending sensitivities of -9.16 and 5.14 nm/m(-1), respectively. The temperature and refractive index sensing characteristics of the ITLPFGs are also investigated experimentally. The ITLPFGs could be adopted as temperature-insensitive directional bending sensor.

引用

页码：18 / 23

页数：6

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