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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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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. |
format | Online Article Text |
id | pubmed-9572301 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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