光学精密工程2023，Vol.31Issue(24)：3531-3539,9.DOI:10.37188/OPE.20233124.3531
基于增强型游标效应的光纤温度传感器
Fiber-optic temperature sensor based on enhanced Vernier effect
摘要
Abstract
A high-sensitivity fiber temperature sensor based on enhanced Vernier effect is proposed.The proposed sensor consists of a cascaded Fabry-Perot interferometer(FPI)and Sagnac interferometer(SI).The FPI was a PDMS cavity formed by filling polydimethylsiloxane(PDMS)into hollow-core fiber(HCF),and SI was formed by fusing a section of Panda fiber inside a single-mode fiber ring.FPI and SI have opposite temperature responses.With increasing temperature,the interference spectrum of FPI will red-shift,whereas that of SI will blue-shift.Therefore,when FPI and SI are cascaded,an enhanced Ver-nier effect will be generated,with a temperature sensitivity much greater than FPI or SI alone.The magni-fication of the enhanced Vernier effect is significantly larger than that of the ordinary Vernier effect.Experi-mental results show that the sensitivity of the sensor is-57.85 nm/℃in the temperature range of 36-39℃,which is 44.8 and 30.8 times that of FPI and SI alone,respectively.The sensitivity magnifications are 2.56 and 1.66 times those of ordinary Vernier effect,respectively.The sensor has the advantages of high sensitivity,good stability,low preparation cost,and very good application prospects.关键词
光纤传感器/法布里-珀罗干涉计/萨格奈克干涉计/增强型游标效应/聚二甲基硅氧烷Key words
optical fiber sensor/Fabry-Perot Interferometer(FPI)/Sagnac Interferometer(SI)/enhanced vernier effect/Polydimethylsiloxane分类
物理学引用本文复制引用
高佳乐,杨玉强,牟小光,张钰颖,李雨婷,李依潼..基于增强型游标效应的光纤温度传感器[J].光学精密工程,2023,31(24):3531-3539,9.基金项目
广东省自然科学基金面上项目资助(No.2023A1515011212,No.2022A1515011603) （No.2023A1515011212,No.2022A1515011603）
深圳市基础研究面上项目资助(No.JCYJ20210324122813036,No.JCYJ20220530162200001) （No.JCYJ20210324122813036,No.JCYJ20220530162200001）
广东省普通高校重点领域专项资助(No.2021ZDZX1015) （No.2021ZDZX1015）
广东海洋大学研究生教育全新计划资助项目(No.202328) （No.202328）
广东海洋大学科研启动经费资助项目(No.060302112009) （No.060302112009）
