A Fabry-Perot Sensor with Cascaded Polymer Films Based on Vernier Effect for Simultaneous Measurement of Relative Humidity and Temperature

被引：11
作者：
Zhang, Teng [1 ,2 ]
Han, Qun [1 ,2 ]
Liang, Zhizhuang [1 ,2 ]
Jiang, Junfeng [1 ,2 ]
Cheng, Zhenzhou [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Key Lab Optoelect Informat Technol, Minist Educ, Tianjin 300072, Peoples R China
来源：
SENSORS | 2023年 / 23卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Fabry-Perot interferometer; cascaded polymer films; optical fiber sensor; optical Vernier effect; INTERFEROMETER;
D O I：
10.3390/s23052800
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this paper, fiber sensor based on Vernier effect for simultaneous measurement of relative humidity (RH) and temperature is proposed. The sensor is fabricated by coating two kinds of ultraviolet (UV) glue with different refractive indexes (RI) and thicknesses on the end face of a fiber patch cord. The thicknesses of two films are controlled to generate the Vernier effect. The inner film is formed by a cured lower-RI UV glue. The exterior film is formed by a cured higher-RI UV glue, of which thickness is much thinner than the inner film. Through the analysis of the Fast Fourier Transform (FFT) of the reflective spectrum, the Vernier effect is formed by the inner lower-RI polymer cavity and the cavity composed of both polymer films. By calibrating the RH and temperature response of two peaks on the envelope of the reflection spectrum, simultaneous measurements of RH and temperature are realized by solving a set of quadratic equations. Experimental results show that the highest RH and temperature sensitivities of the sensor are 387.3 pm/%RH (in 20%RH to 90%RH) and -533.0 pm/degrees C (in 15 degrees C to 40 degrees C), respectively. The sensor has merits of low cost, simple fabrication, and high sensitivity, which makes it very attractive for applications that need to simultaneously monitor these two parameters.
引用
收藏
页数：12
相关论文
共 25 条
[1]   Relative Humidity Sensor Based on a Few-Mode Microfiber Knot Resonator by Mitigating the Group Index Difference of a Few-Mode Microfiber [J].
Anh Duy Duong Le ;
Han, Young-Geun .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2018, 36 (04) :904-909
[2]   Tapered Plastic Optical Fiber Coated With HEC/PVDF for Measurement of Relative Humidity [J].
Batumalay, Malathy ;
Lokman, Asiah ;
Ahmad, Fauzan ;
Arof, Hamzah ;
Ahmad, Harith ;
Harun, Sulaiman Wadi .
IEEE SENSORS JOURNAL, 2013, 13 (12) :4702-4705
[3]   Self-temperature-compensative refractometer based on singlemode-multimode-singlemode fiber structure [J].
Chen, Yaofei ;
Han, Qun ;
Liu, Tiegen ;
Lu, Xiaoying .
SENSORS AND ACTUATORS B-CHEMICAL, 2015, 212 :107-111
[4]   Wavelength Dependence of the Sensitivity of All-Fiber Refractometers Based on the Singlemode-Multimode-Singlemode Structure [J].
Chen, Yaofei ;
Han, Qun ;
Liu, Tiegen ;
Xiao, Hai .
IEEE PHOTONICS JOURNAL, 2014, 6 (04)
[5]   High-resolution polymer optical fibre humidity sensor utilizing single-passband microwave photonic filter [J].
Cheng, Xin ;
Hu, Junhui ;
Zhu, Kun ;
Zhao, Zhiyong .
MEASUREMENT, 2021, 179
[6]   Highly sensitive PDMS-filled Fabry-Perot interferometer temperature sensor based on the Vernier effect [J].
Hou, Leyi ;
Zhao, Chunliu ;
Xu, Ben ;
Mao, Bangning ;
Shen, Changyu ;
Wang, D. N. .
APPLIED OPTICS, 2019, 58 (18) :4858-4865
[7]   Simultaneous Measurement of Temperature and Relative Humidity Using Cascaded C-shaped Fabry-Perot interferometers [J].
Li, Fei ;
Li, Xue-gang ;
Zhou, Xue ;
Zhang, Ya-nan ;
Lv, Ri-qing ;
Zhao, Yong ;
Xie, Liu-shun ;
Linh Viet Nguyen ;
Ebendorff-Heidepriem, Heike ;
Warren-Smith, Stephen C. .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2022, 40 (04) :1209-1215
[8]   An Optical Fiber Sensor Coated with Electrospinning Polyvinyl Alcohol/Carbon Nanotubes Composite Film [J].
Li, Jinze ;
Liu, Xin ;
Sun, Hao ;
Wang, Liming ;
Zhang, Jianqi ;
Deng, Li ;
Ma, Tianhong .
SENSORS, 2020, 20 (23) :1-14
[9]   Optical cascaded Fabry-Perot interferometer hydrogen sensor based on vernier effect [J].
Li, Yina ;
Zhao, Chunliu ;
Xu, Ben ;
Wang, Dongning ;
Yang, Minghong .
OPTICS COMMUNICATIONS, 2018, 414 :166-171
[10]   Optical Fiber Relative Humidity Sensor Based on Inline Mach-Zehnder Interferometer With ZnO Nanowires Coating [J].
Lokman, Asiah ;
Arof, Hamzah ;
Harun, Sulaiman Wadi ;
Harith, Zuraidah ;
Rafaie, Hartini Ahmad ;
Nor, Roslan Md .
IEEE SENSORS JOURNAL, 2016, 16 (02) :312-316
123