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A polarization-independent torsion sensor based on the near-helical long period fiber grating

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Abstract

A torsion sensor based on the near-helical (NH) long period fiber grating (LPFG) is fabricated by using a high frequency pulsed CO2 laser. Each groove of the NH-LPFG is spirally written in the four sides of a single-mode fiber. The NH-LPFG has a helical periodic vertical index modulation. This is different from the screw-type index modulation of the common helical LPFGs (H-LPFGs) fabricated in a twisted fiber. The torsion and temperature characteristics of the NH-LPFG are experimentally investigated. The temperature sensitivity is about 0.0668 nm/°C. The torsion sensitivity is 0.103 nm/(rad/m) and independent of the polarization state of incident light.

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DOI:10.3788/col201816.100601

所属栏目:Fiber optics and optical communication

基金项目:This work was supported by the National Natural Science Foundation of China (Nos. 61377084, 41174161, and 61775044), the Joint Research Fund in Astronomy (No. U1631239) under cooperative agreement between the National Natural Science Foundation of China (NSFC) and the Chinese Academy of Sciences (CAS), and in part by the Aeronautical Science Foundation of China (No. 201608P6003).

收稿日期:2018-06-20

录用日期:2018-08-17

网络出版日期:2018-09-20

作者单位    点击查看

Zhihang Han:College of Science, Harbin Engineering University, Harbin 150001, China
Cuiting Sun:College of Science, Harbin Engineering University, Harbin 150001, China
Xiren Jin:College of Science, Harbin Engineering University, Harbin 150001, China
Hang Jiang:College of Science, Harbin Engineering University, Harbin 150001, China
Chong Yao:College of Science, Harbin Engineering University, Harbin 150001, China
Shuo Zhang:College of Science, Harbin Engineering University, Harbin 150001, China
Weiliang Liu:College of Science, Harbin Engineering University, Harbin 150001, China
Tao Geng:College of Science, Harbin Engineering University, Harbin 150001, China
Feng Peng:School of Physics and Technology, University of Jinan, Jinan 250022, China
Weimin Sun:College of Science, Harbin Engineering University, Harbin 150001, China
Libo Yuan:Photonics Research Center, Guilin University of Electronics Technology, Guilin 541004, China

联系人作者:Feng Peng(pengfeng8283@163.com)

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引用该论文

Zhihang Han, Cuiting Sun, Xiren Jin, Hang Jiang, Chong Yao, Shuo Zhang, Weiliang Liu, Tao Geng, Feng Peng, Weimin Sun, Libo Yuan, "A polarization-independent torsion sensor based on the near-helical long period fiber grating," Chinese Optics Letters 16(10), 100601 (2018)

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