Double Cladding Fiber Chiral Long-Period Grating-Based Directional Torsion Sensor

被引：35
|
作者：
Jiang, Chen [1 ,2 ,3 ]
Liu, Yunqi [1 ,2 ,3 ]
Huang, Lu [1 ,2 ,3 ]
Mou, Chengbo [1 ,2 ,3 ]
机构：
[1] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Joint Int Res Lab Specialty Fiber Opt & Adv Commu, Shanghai 200444, Peoples R China
[3] Shanghai Univ, Shanghai Inst Adv Commun & Data Sci, Shanghai 200444, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Optical fiber sensor; chiral long-period grating; double cladding fiber; TEMPERATURE; WRITTEN;
D O I：
10.1109/LPT.2019.2936209
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrated the fabrication of a chiral long-period fiber grating (CLPG) by CO2-laser heating of a twisted double-cladding fiber (DCF). The polarization and sensing characteristics of the DCF-CLPG are investigated experimentally. Due to the helical structure, the grating shows a higher torsion sensitivity of -0.40 nm/(rad/m), and the torsion rate and torsion directions can be measured simultaneously using single DCF-CLPG. The temperature, strain, bending, and surrounding refractive index sensing characteristics are also investigated experimentally. The proposed CLPG has a promising application as high-sensitivity directional torsion sensor.
引用
收藏
页码：1522 / 1525
页数：4
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