Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Liu, Dejun, Li, Wei, Wu, Qiang, Zhao, Haoyu, Ling, Fengzi, Tian, Ke, Shen, Changyu, Wei, Fangfang, Han, Wei, Farrell, Gerald, Semenova, Yuliya, Wang, Pengfei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
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
_version_ 1783585057550630912
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
work_keys_str_mv AT liudejun negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT liwei negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT wuqiang negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT zhaohaoyu negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT lingfengzi negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT tianke negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT shenchangyu negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT weifangfang negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT hanwei negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT farrellgerald negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT semenovayuliya negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain
AT wangpengfei negativecurvaturehollowcorefiberbasedallfiberinterferometeranditssensingapplicationstotemperatureandstrain