Torsion-Assisted FBG With an Enhanced Capability of High-Temperature Sensing

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成果类型：

期刊论文

作者：

Wang, Zi-an;Song, Yuxin;Zheng, Jie;Zeng, Li;Dong, Xinran;...

通讯作者：

Dong, XR

作者机构：

[Dong, Xinran; Zheng, Jie; Wang, Zi-an] Cent South Univ Forestry & Technol, Coll Mech & Elect Engn, Changsha 410018, Peoples R China.

[Song, Yuxin] Hong Kong Polytech Univ, Dept Mech Engn, Hong Kong, Peoples R China.

[Zeng, Li] Hunan Univ Technol & Business, Sch Intelligent Engn & Intelligent Mfg, Changsha 410205, Peoples R China.

[Sun, Xiaoyan] Cent South Univ, Coll Mech & Elect Engn, State Key Lab Precis Mfg Extreme Serv Performance, Changsha 410017, Hunan, Peoples R China.

通讯机构：

[Dong, XR ] C

Cent South Univ Forestry & Technol, Coll Mech & Elect Engn, Changsha 410018, Peoples R China.

语种：

英文

关键词：

Fiber gratings;Optical fibers;Reflection;Temperature sensors;Stress;Sensitivity;Gratings;Refractive index;Fiber lasers;Thermal stability;Decay rate;high-temperature sensing;high-temperature stability;torsion-assisted fiber Bragg grating

期刊：

Journal of Lightwave Technology

ISSN：

0733-8724

年：

2025

卷：

期：

页码：

2449-2455

DOI：

10.1109/JLT.2024.3492717

基金类别：

10.13039/501100001809-National Natural Science Foundation of China (Grant Number: 52005521) 10.13039/501100004735-Natural Science Foundation of Hunan Province (Grant Number: 2021JJ41079)

机构署名：

本校为第一且通讯机构

院系归属：

机电工程学院

摘要：

We propose a simple and effective strategy to improve the high-temperature sensing characteristics of fiber Bragg gratings (FBGs) by introducing compressive stress into the grating structure by means of torsion assisted. Specifically, comparative analysis reveals that the torsion-assisted FBG has exhibited better high-temperature stability within the temperature range of 200∼800 °C as evidenced by a decay rate of 0.0064 dB/°C, which is significantly lower than the bare FBG (0.0081 dB/°C). Careful investigation shows that the thermal decay o...

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