Temperature insensitive distributed wide-dynamic-range strain sensing based on polarization-maintaining photonic crystal fiber

被引：1

作者：

Xu, Zhenyuan ^{[1
]}

Geng, Youfu ^{[1
]}

Zhu, Xiaojian ^{[1
]}

Lu, Jing ^{[1
]}

Yi, Duo ^{[1
]}

Du, Yu ^{[1
]}

Wang, Jiaqi ^{[1
]}

Hong, Xueming ^{[1
]}

Li, Xuejin ^{[2
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen Key Lab Sensor Technol, Shenzhen 518060, Peoples R China

[2] Chinese Univ Hong Kong, Sch Sci & Engn, Shenzhen 518172, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2024年 / 57卷 / 30期

关键词：

optical frequency domain reflectance; polarization-maintaining photonic crystal fiber; strain sensor; SENSOR; PHASE;

D O I：

10.1088/1361-6463/ad40bb

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, a temperature insensitive wide-dynamic-range distributed strain sensor with centimeter-level spatial resolution based on optical frequency domain reflection technology is proposed. It adopts a polarization-maintaining photonic crystal fiber as the sensing fiber, and experimental results demonstrate that its temperature sensitivity is much smaller than that of the standard polarization-maintaining fiber. Benefited from the specially designed cross-correlation algorithm, the sensor achieves the maximum measurable strain reaches 7000 mu & varepsilon; with spatial resolution of 1.66 cm. This provides a new approach to address current issues with special fiber sensors, such as single-point sensing and low spatial resolution, which shows great significance for structural health monitoring of buildings, bridges and tunnels with urgent requirement of large dynamic range.

引用

页数：8

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