用于曲率和温度检测的角向级联长周期光纤光栅

Angularly Cascaded Long-Period Fiber Grating for Curvature and Temperature Detection.

作者信息

Xiao Anping, Du Jie, Ling Qiang, Chen Yao, Gu Zhengtian, Chen Haiyun, Yu Zhangwei, Mao Barerem-Melgueba, Guan Zuguang, Chen Daru

机构信息

Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Geng Wen Road, Hangzhou 311231, China.

Laboratory of Photo-Electric Functional Films, College of Science, University of Shanghai for Science and Technology, 516 Jun Gong Road, Shanghai 200093, China.

出版信息

Sensors (Basel). 2023 Dec 28;24(1):184. doi: 10.3390/s24010184.

DOI:10.3390/s24010184

PMID:38203045

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10781333/

Abstract

A high-sensitivity curvature sensor with dual-parameter measurement ability based on angularly cascaded long-period fiber grating (AC-LPFG) is proposed and experimentally demonstrated, which consists of two titled LPFGs (TLPFGs) with different tilt angles and the same grating period. AC-LPFG was fabricated by using a deep ultraviolet laser and an amplitude-mask in our laboratory. The experimental results show that simultaneous measurement of curvature and temperature can be achieved by monitoring the wavelengths of two resonant peaks for different TLPFGs. The two peaks show opposite shifts with increasing curvature and has a maximum curvature sensitivity of 16.392 nm/m. With the advantages of low cost, high sensitivity, and dual-parameter measurements, our sensor has more potential for engineering applications.

摘要

提出并通过实验验证了一种基于角度级联长周期光纤光栅（AC-LPFG）的具有双参数测量能力的高灵敏度曲率传感器，该传感器由两个具有不同倾斜角和相同光栅周期的倾斜长周期光纤光栅（TLPFG）组成。AC-LPFG是在我们实验室中使用深紫外激光和振幅掩模制作的。实验结果表明，通过监测不同TLPFG的两个谐振峰的波长，可以实现曲率和温度的同时测量。这两个峰随着曲率增加呈现相反的偏移，最大曲率灵敏度为16.392 nm/m。由于具有低成本、高灵敏度和双参数测量的优点，我们的传感器在工程应用中具有更大的潜力。