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High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings

In this paper, we investigated the evolution of the dispersion curves of long-period fiber gratings (LPFGs) from room temperature down to 0 K. We considered gratings arc-induced in the SMF28 fiber and in two B/Ge co-doped fibers. Computer simulations were performed based on previously published expe...

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Detalles Bibliográficos
Autores principales: Ivanov, Oleg V., Caldas, Paulo, Rego, Gaspar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9572301/
https://www.ncbi.nlm.nih.gov/pubmed/36236220
http://dx.doi.org/10.3390/s22197119
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author Ivanov, Oleg V.
Caldas, Paulo
Rego, Gaspar
author_facet Ivanov, Oleg V.
Caldas, Paulo
Rego, Gaspar
author_sort Ivanov, Oleg V.
collection PubMed
description In this paper, we investigated the evolution of the dispersion curves of long-period fiber gratings (LPFGs) from room temperature down to 0 K. We considered gratings arc-induced in the SMF28 fiber and in two B/Ge co-doped fibers. Computer simulations were performed based on previously published experimental data. We found that the dispersion curves belonging to the lowest-order cladding modes are the most affected by the temperature changes, but those changes are minute when considering cladding modes with dispersion turning points (DTP) in the telecommunication windows. The temperature sensitivity is higher for gratings inscribed in the B/Ge co-doped fibers near DTP and the optimum grating period can be chosen at room temperature. A temperature sensitivity as high as −850 pm/K can be obtained in the 100–200 K temperature range, while a value of −170 pm/K is reachable at 20 K.
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spelling pubmed-95723012022-10-17 High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings Ivanov, Oleg V. Caldas, Paulo Rego, Gaspar Sensors (Basel) Article In this paper, we investigated the evolution of the dispersion curves of long-period fiber gratings (LPFGs) from room temperature down to 0 K. We considered gratings arc-induced in the SMF28 fiber and in two B/Ge co-doped fibers. Computer simulations were performed based on previously published experimental data. We found that the dispersion curves belonging to the lowest-order cladding modes are the most affected by the temperature changes, but those changes are minute when considering cladding modes with dispersion turning points (DTP) in the telecommunication windows. The temperature sensitivity is higher for gratings inscribed in the B/Ge co-doped fibers near DTP and the optimum grating period can be chosen at room temperature. A temperature sensitivity as high as −850 pm/K can be obtained in the 100–200 K temperature range, while a value of −170 pm/K is reachable at 20 K. MDPI 2022-09-20 /pmc/articles/PMC9572301/ /pubmed/36236220 http://dx.doi.org/10.3390/s22197119 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 Article
Ivanov, Oleg V.
Caldas, Paulo
Rego, Gaspar
High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings
title High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings
title_full High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings
title_fullStr High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings
title_full_unstemmed High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings
title_short High Sensitivity Cryogenic Temperature Sensors Based on Arc-Induced Long-Period Fiber Gratings
title_sort high sensitivity cryogenic temperature sensors based on arc-induced long-period fiber gratings
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9572301/
https://www.ncbi.nlm.nih.gov/pubmed/36236220
http://dx.doi.org/10.3390/s22197119
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