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Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing
New miniaturized sensors for biological and medical applications must be adapted to the measuring environments and they should provide a high measurement resolution to sense small changes. The Vernier effect is an effective way of magnifying the sensitivity of a device, allowing for higher resolutio...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387336/ https://www.ncbi.nlm.nih.gov/pubmed/30678290 http://dx.doi.org/10.3390/s19030453 |
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author | Gomes, André D. Becker, Martin Dellith, Jan Zibaii, Mohammad I. Latifi, Hamid Rothhardt, Manfred Bartelt, Hartmut Frazão, Orlando |
author_facet | Gomes, André D. Becker, Martin Dellith, Jan Zibaii, Mohammad I. Latifi, Hamid Rothhardt, Manfred Bartelt, Hartmut Frazão, Orlando |
author_sort | Gomes, André D. |
collection | PubMed |
description | New miniaturized sensors for biological and medical applications must be adapted to the measuring environments and they should provide a high measurement resolution to sense small changes. The Vernier effect is an effective way of magnifying the sensitivity of a device, allowing for higher resolution sensing. We applied this concept to the development of a small-size optical fiber Fabry–Perot interferometer probe that presents more than 60-fold higher sensitivity to temperature than the normal Fabry–Perot interferometer without the Vernier effect. This enables the sensor to reach higher temperature resolutions. The silica Fabry–Perot interferometer is created by focused ion beam milling of the end of a tapered multimode fiber. Multiple Fabry–Perot interferometers with shifted frequencies are generated in the cavity due to the presence of multiple modes. The reflection spectrum shows two main components in the Fast Fourier transform that give rise to the Vernier effect. The superposition of these components presents an enhancement of sensitivity to temperature. The same effect is also obtained by monitoring the reflection spectrum node without any filtering. A temperature sensitivity of −654 pm/°C was obtained between 30 °C and 120 °C, with an experimental resolution of 0.14 °C. Stability measurements are also reported. |
format | Online Article Text |
id | pubmed-6387336 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63873362019-02-26 Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing Gomes, André D. Becker, Martin Dellith, Jan Zibaii, Mohammad I. Latifi, Hamid Rothhardt, Manfred Bartelt, Hartmut Frazão, Orlando Sensors (Basel) Article New miniaturized sensors for biological and medical applications must be adapted to the measuring environments and they should provide a high measurement resolution to sense small changes. The Vernier effect is an effective way of magnifying the sensitivity of a device, allowing for higher resolution sensing. We applied this concept to the development of a small-size optical fiber Fabry–Perot interferometer probe that presents more than 60-fold higher sensitivity to temperature than the normal Fabry–Perot interferometer without the Vernier effect. This enables the sensor to reach higher temperature resolutions. The silica Fabry–Perot interferometer is created by focused ion beam milling of the end of a tapered multimode fiber. Multiple Fabry–Perot interferometers with shifted frequencies are generated in the cavity due to the presence of multiple modes. The reflection spectrum shows two main components in the Fast Fourier transform that give rise to the Vernier effect. The superposition of these components presents an enhancement of sensitivity to temperature. The same effect is also obtained by monitoring the reflection spectrum node without any filtering. A temperature sensitivity of −654 pm/°C was obtained between 30 °C and 120 °C, with an experimental resolution of 0.14 °C. Stability measurements are also reported. MDPI 2019-01-22 /pmc/articles/PMC6387336/ /pubmed/30678290 http://dx.doi.org/10.3390/s19030453 Text en © 2019 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Gomes, André D. Becker, Martin Dellith, Jan Zibaii, Mohammad I. Latifi, Hamid Rothhardt, Manfred Bartelt, Hartmut Frazão, Orlando Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing |
title | Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing |
title_full | Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing |
title_fullStr | Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing |
title_full_unstemmed | Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing |
title_short | Multimode Fabry–Perot Interferometer Probe Based on Vernier Effect for Enhanced Temperature Sensing |
title_sort | multimode fabry–perot interferometer probe based on vernier effect for enhanced temperature sensing |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387336/ https://www.ncbi.nlm.nih.gov/pubmed/30678290 http://dx.doi.org/10.3390/s19030453 |
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