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Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing †

An optical strain gauge based on a balloon-like interferometer structure formed by a bent standard single-mode fiber combined with a 3D printer piece has been presented and demonstrated, which can be used to measure displacement. The interferometer has a simple and compact size, easy fabrication, lo...

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Autores principales: Cardoso, Victor H. R., Caldas, Paulo, Giraldi, Maria Thereza R., Frazão, Orlando, Costa, João C. W. Albuquerque, Santos, José Luís
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9571387/
https://www.ncbi.nlm.nih.gov/pubmed/36236750
http://dx.doi.org/10.3390/s22197652
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author Cardoso, Victor H. R.
Caldas, Paulo
Giraldi, Maria Thereza R.
Frazão, Orlando
Costa, João C. W. Albuquerque
Santos, José Luís
author_facet Cardoso, Victor H. R.
Caldas, Paulo
Giraldi, Maria Thereza R.
Frazão, Orlando
Costa, João C. W. Albuquerque
Santos, José Luís
author_sort Cardoso, Victor H. R.
collection PubMed
description An optical strain gauge based on a balloon-like interferometer structure formed by a bent standard single-mode fiber combined with a 3D printer piece has been presented and demonstrated, which can be used to measure displacement. The interferometer has a simple and compact size, easy fabrication, low cost, and is repeatable. The sensor is based on the interference between the core and cladding modes. This is caused by the fiber’s curvature because when light propagates through the curved balloon-shaped interferometer region, a portion of it will be released from the core limitation and coupled to the cladding. The balloon has an axial displacement as a result of how the artwork was constructed. The sensor head is sandwiched between two cantilevers such that when there is a displacement, the dimension associated with the micro bend is altered. The sensor response as a function of displacement can be determined using wavelength shift or intensity change interrogation techniques. Therefore, this optical strain gauge is a good option for applications where structure displacement needs to be examined. The sensor presents a sensitivity of 55.014 nm for displacement measurements ranging from 0 to 10 mm and a strain sensitivity of 500.13 pm/ [Formula: see text].
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spelling pubmed-95713872022-10-17 Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing † Cardoso, Victor H. R. Caldas, Paulo Giraldi, Maria Thereza R. Frazão, Orlando Costa, João C. W. Albuquerque Santos, José Luís Sensors (Basel) Article An optical strain gauge based on a balloon-like interferometer structure formed by a bent standard single-mode fiber combined with a 3D printer piece has been presented and demonstrated, which can be used to measure displacement. The interferometer has a simple and compact size, easy fabrication, low cost, and is repeatable. The sensor is based on the interference between the core and cladding modes. This is caused by the fiber’s curvature because when light propagates through the curved balloon-shaped interferometer region, a portion of it will be released from the core limitation and coupled to the cladding. The balloon has an axial displacement as a result of how the artwork was constructed. The sensor head is sandwiched between two cantilevers such that when there is a displacement, the dimension associated with the micro bend is altered. The sensor response as a function of displacement can be determined using wavelength shift or intensity change interrogation techniques. Therefore, this optical strain gauge is a good option for applications where structure displacement needs to be examined. The sensor presents a sensitivity of 55.014 nm for displacement measurements ranging from 0 to 10 mm and a strain sensitivity of 500.13 pm/ [Formula: see text]. MDPI 2022-10-09 /pmc/articles/PMC9571387/ /pubmed/36236750 http://dx.doi.org/10.3390/s22197652 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
Cardoso, Victor H. R.
Caldas, Paulo
Giraldi, Maria Thereza R.
Frazão, Orlando
Costa, João C. W. Albuquerque
Santos, José Luís
Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing †
title Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing †
title_full Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing †
title_fullStr Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing †
title_full_unstemmed Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing †
title_short Optical Strain Gauge Prototype Based on a High Sensitivity Balloon-like Interferometer and Additive Manufacturing †
title_sort optical strain gauge prototype based on a high sensitivity balloon-like interferometer and additive manufacturing †
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9571387/
https://www.ncbi.nlm.nih.gov/pubmed/36236750
http://dx.doi.org/10.3390/s22197652
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