Highly Sensitive Temperature Sensor Based on a UV Glue-Filled Fabry-Perot Interferometer Utilizing the Vernier Effect

被引：0

作者：

Qiang, Chengwen ^{[1
,2
]}

Chu, Chu ^{[1
,2
]}

Wang, Yuhan ^{[1
,2
]}

Yang, Xinghua ^{[1
,2
]}

Yang, Xinyu ^{[1
,2
]}

Hou, Yuting ^{[1
,2
]}

Wen, Xingyue ^{[1
,2
]}

Teng, Pingping ^{[1
,2
]}

Zhang, Bo ^{[3
,4
]}

Sivanathan, Sivagunalan ^{[3
]}

Jones, Adam ^{[3
]}

Li, Kang ^{[3
]}

机构：

[1] Harbin Engn Univ, Coll Phys & Optoelect Engn, Key Lab Photon Mat & Devices Phys Ocean Applicat, Minist Ind & Informat Technol China, Harbin 150001, Peoples R China

[2] Harbin Engn Univ, Coll Phys & Optoelect Engn, Key Lab Infiber Integrated Opt, Minist Educ, Harbin 150001, Peoples R China

[3] Univ South Wales, Fac Comp Engn & Sci, Treforest CF37 1DL, Wales

[4] Henan Acad Special Opt Ltd, Xinxiang 453000, Peoples R China

来源：

PHOTONICS | 2025年 / 12卷 / 03期

基金：

中国国家自然科学基金;

关键词：

temperature sensor; optical fiber sensor; Fabry-Perot interferometer; Vernier effect; UV glue; OPTICAL-FIBER SENSORS;

D O I：

10.3390/photonics12030256

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A parallel Fabry-Perot interferometer (FPI) optical fiber sensor, enhanced with UV glue, was proposed for environmental temperature detection. The UV glue is applied to the fiber's sensing region using a coating method, forming an FP cavity through misalignment welding, allowing the FP to function as a temperature sensor. In parallel, a reference FPI with a similar free spectral range (FSR) is connected, generating a Vernier effect that amplifies small changes in the refractive index (RI) of the sensing region. The study demonstrates that UV glue enhances the temperature-sensing capabilities of the FP, and when combined with the Vernier effect, it significantly improves the sensitivity of a single interferometric sensor. The temperature sensitivity of the parallel-connected FPI is -2.80219 nm/degrees C, which is 7.768 times greater than that of a single FPI (-0.36075 nm/degrees C). The sensor shows high sensitivity, stability, and reversibility, making it promising for temperature-monitoring applications in various fields, including everyday use, industrial production, and the advancement of optical fiber temperature-sensing technologies.

引用

页数：14

共 44 条

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