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Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point

High-accuracy temperature measurement plays a vital role in biomedical, oceanographic, and photovoltaic industries. Here, a highly sensitive temperature sensor is proposed and demonstrated based on cascaded polymer-infiltrated Mach–Zehnder interferometers (MZIs), operating near the dispersion turnin...

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Autores principales: He, Jia, Zhang, Fengchan, Xu, Xizhen, Du, Bin, Wu, Jiafeng, Li, Zhuoda, Bai, Zhiyong, Guo, Jinchuan, Wang, Yiping, He, Jun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459823/
https://www.ncbi.nlm.nih.gov/pubmed/36080692
http://dx.doi.org/10.3390/polym14173617
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author He, Jia
Zhang, Fengchan
Xu, Xizhen
Du, Bin
Wu, Jiafeng
Li, Zhuoda
Bai, Zhiyong
Guo, Jinchuan
Wang, Yiping
He, Jun
author_facet He, Jia
Zhang, Fengchan
Xu, Xizhen
Du, Bin
Wu, Jiafeng
Li, Zhuoda
Bai, Zhiyong
Guo, Jinchuan
Wang, Yiping
He, Jun
author_sort He, Jia
collection PubMed
description High-accuracy temperature measurement plays a vital role in biomedical, oceanographic, and photovoltaic industries. Here, a highly sensitive temperature sensor is proposed and demonstrated based on cascaded polymer-infiltrated Mach–Zehnder interferometers (MZIs), operating near the dispersion turning point. The MZI was constructed by splicing a half-pitch graded index fiber (GIF) and two sections of single-mode fiber and creating an inner air cavity based on femtosecond laser micromachining. The UV-curable polymer-infiltrated air cavity functioned as one of the interference arms of MZI, and the residual GIF core functioned as the other. Two MZIs with different cavity lengths and infiltrated with the UV-curable polymers, having the refractive indexes on the different sides of the turning point, were created. Moreover, the effects of the length and the bending way of transmission SMF between the first and the second MZI were studied. As a result, the cascaded MZI temperature sensor exhibits a greatly enhanced temperature sensitivity of −24.86 nm/°C based on wavelength differential detection. The aforementioned result makes it promising for high-accuracy temperature measurements in biomedical, oceanographic, and photovoltaic applications.
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spelling pubmed-94598232022-09-10 Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point He, Jia Zhang, Fengchan Xu, Xizhen Du, Bin Wu, Jiafeng Li, Zhuoda Bai, Zhiyong Guo, Jinchuan Wang, Yiping He, Jun Polymers (Basel) Communication High-accuracy temperature measurement plays a vital role in biomedical, oceanographic, and photovoltaic industries. Here, a highly sensitive temperature sensor is proposed and demonstrated based on cascaded polymer-infiltrated Mach–Zehnder interferometers (MZIs), operating near the dispersion turning point. The MZI was constructed by splicing a half-pitch graded index fiber (GIF) and two sections of single-mode fiber and creating an inner air cavity based on femtosecond laser micromachining. The UV-curable polymer-infiltrated air cavity functioned as one of the interference arms of MZI, and the residual GIF core functioned as the other. Two MZIs with different cavity lengths and infiltrated with the UV-curable polymers, having the refractive indexes on the different sides of the turning point, were created. Moreover, the effects of the length and the bending way of transmission SMF between the first and the second MZI were studied. As a result, the cascaded MZI temperature sensor exhibits a greatly enhanced temperature sensitivity of −24.86 nm/°C based on wavelength differential detection. The aforementioned result makes it promising for high-accuracy temperature measurements in biomedical, oceanographic, and photovoltaic applications. MDPI 2022-09-01 /pmc/articles/PMC9459823/ /pubmed/36080692 http://dx.doi.org/10.3390/polym14173617 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
He, Jia
Zhang, Fengchan
Xu, Xizhen
Du, Bin
Wu, Jiafeng
Li, Zhuoda
Bai, Zhiyong
Guo, Jinchuan
Wang, Yiping
He, Jun
Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point
title Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point
title_full Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point
title_fullStr Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point
title_full_unstemmed Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point
title_short Highly Sensitive Temperature Sensor Based on Cascaded Polymer-Infiltrated Fiber Mach–Zehnder Interferometers Operating near the Dispersion Turning Point
title_sort highly sensitive temperature sensor based on cascaded polymer-infiltrated fiber mach–zehnder interferometers operating near the dispersion turning point
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459823/
https://www.ncbi.nlm.nih.gov/pubmed/36080692
http://dx.doi.org/10.3390/polym14173617
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