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Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain
Negative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7506629/ https://www.ncbi.nlm.nih.gov/pubmed/32842517 http://dx.doi.org/10.3390/s20174763 |
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author | Liu, Dejun Li, Wei Wu, Qiang Zhao, Haoyu Ling, Fengzi Tian, Ke Shen, Changyu Wei, Fangfang Han, Wei Farrell, Gerald Semenova, Yuliya Wang, Pengfei |
author_facet | Liu, Dejun Li, Wei Wu, Qiang Zhao, Haoyu Ling, Fengzi Tian, Ke Shen, Changyu Wei, Fangfang Han, Wei Farrell, Gerald Semenova, Yuliya Wang, Pengfei |
author_sort | Liu, Dejun |
collection | PubMed |
description | Negative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer was fabricated by simple fusion splicing of a short section of an NCHCF between two singlemode fibers (SMFs). Both simulation and experimental results show that multiple modes and modal interferences are excited within the NCHCF structure. Periodic transmission dips with high spectral extinction ratio (up to 30 dB) and wide free spectral range (FSR) are produced, which is mainly introduced by the modes coupling between HE(11) and HE(12). A small portion of light guiding by means of Anti-resonant reflecting optical waveguide (ARROW) mechanism is also observed. The transmission dips, resulting from multimode interferences (MMI) and ARROW effect have a big difference in sensitivities to strain and temperature, thus making it possible to monitor these two parameters with a single sensor head by using a characteristic matrix approach. In addition, the proposed sensor structure is experimentally proven to have a good reproducibility. |
format | Online Article Text |
id | pubmed-7506629 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75066292020-09-26 Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain Liu, Dejun Li, Wei Wu, Qiang Zhao, Haoyu Ling, Fengzi Tian, Ke Shen, Changyu Wei, Fangfang Han, Wei Farrell, Gerald Semenova, Yuliya Wang, Pengfei Sensors (Basel) Article Negative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer was fabricated by simple fusion splicing of a short section of an NCHCF between two singlemode fibers (SMFs). Both simulation and experimental results show that multiple modes and modal interferences are excited within the NCHCF structure. Periodic transmission dips with high spectral extinction ratio (up to 30 dB) and wide free spectral range (FSR) are produced, which is mainly introduced by the modes coupling between HE(11) and HE(12). A small portion of light guiding by means of Anti-resonant reflecting optical waveguide (ARROW) mechanism is also observed. The transmission dips, resulting from multimode interferences (MMI) and ARROW effect have a big difference in sensitivities to strain and temperature, thus making it possible to monitor these two parameters with a single sensor head by using a characteristic matrix approach. In addition, the proposed sensor structure is experimentally proven to have a good reproducibility. MDPI 2020-08-23 /pmc/articles/PMC7506629/ /pubmed/32842517 http://dx.doi.org/10.3390/s20174763 Text en © 2020 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 Liu, Dejun Li, Wei Wu, Qiang Zhao, Haoyu Ling, Fengzi Tian, Ke Shen, Changyu Wei, Fangfang Han, Wei Farrell, Gerald Semenova, Yuliya Wang, Pengfei Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
title | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
title_full | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
title_fullStr | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
title_full_unstemmed | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
title_short | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
title_sort | negative curvature hollow core fiber based all-fiber interferometer and its sensing applications to temperature and strain |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7506629/ https://www.ncbi.nlm.nih.gov/pubmed/32842517 http://dx.doi.org/10.3390/s20174763 |
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