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Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology
The typical structure of an optical fiber surface plasmon resonance (SPR) sensor, which has been widely investigated, is to produce the SPR phenomenon by the transmission of light in a fiber core. The traditional method is to peel off the fiber cladding by complex methods such as corrosion, polishin...
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/PMC6427739/ https://www.ncbi.nlm.nih.gov/pubmed/30857278 http://dx.doi.org/10.3390/s19051202 |
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author | Wei, Yong Hu, Jiangxi Wu, Ping Su, Yudong Liu, Chunlan Wang, Shifa Nie, Xiangfei Liu, Lu |
author_facet | Wei, Yong Hu, Jiangxi Wu, Ping Su, Yudong Liu, Chunlan Wang, Shifa Nie, Xiangfei Liu, Lu |
author_sort | Wei, Yong |
collection | PubMed |
description | The typical structure of an optical fiber surface plasmon resonance (SPR) sensor, which has been widely investigated, is to produce the SPR phenomenon by the transmission of light in a fiber core. The traditional method is to peel off the fiber cladding by complex methods such as corrosion, polishing, and grinding. In this paper, the transmitted light of a single-mode fiber is injected into three kinds of fiber cladding by core-shift welding technology to obtain the evanescent field directly between the cladding and the air interface and to build the Kretschmann structure by plating with a 50-nm gold film. The SPR sensing phenomenon is realized in three kinds of fiber cladding of a single-mode fiber, a graded-index multimode fiber, and a step-index multimode fiber. For the step-index multimode fiber cladding SPR sensor, all the light field energy is coupled to the cladding, leading to no light field in the fiber core, the deepest resonance valley, and the narrowest full width at half maximum. The single-mode fiber cladding SPR sensor has the highest sensitivity, and the mean sensitivity of the probe reaches 2538 nm/RIU (refractive index unit) after parameter optimization. |
format | Online Article Text |
id | pubmed-6427739 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64277392019-04-15 Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology Wei, Yong Hu, Jiangxi Wu, Ping Su, Yudong Liu, Chunlan Wang, Shifa Nie, Xiangfei Liu, Lu Sensors (Basel) Article The typical structure of an optical fiber surface plasmon resonance (SPR) sensor, which has been widely investigated, is to produce the SPR phenomenon by the transmission of light in a fiber core. The traditional method is to peel off the fiber cladding by complex methods such as corrosion, polishing, and grinding. In this paper, the transmitted light of a single-mode fiber is injected into three kinds of fiber cladding by core-shift welding technology to obtain the evanescent field directly between the cladding and the air interface and to build the Kretschmann structure by plating with a 50-nm gold film. The SPR sensing phenomenon is realized in three kinds of fiber cladding of a single-mode fiber, a graded-index multimode fiber, and a step-index multimode fiber. For the step-index multimode fiber cladding SPR sensor, all the light field energy is coupled to the cladding, leading to no light field in the fiber core, the deepest resonance valley, and the narrowest full width at half maximum. The single-mode fiber cladding SPR sensor has the highest sensitivity, and the mean sensitivity of the probe reaches 2538 nm/RIU (refractive index unit) after parameter optimization. MDPI 2019-03-09 /pmc/articles/PMC6427739/ /pubmed/30857278 http://dx.doi.org/10.3390/s19051202 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 Wei, Yong Hu, Jiangxi Wu, Ping Su, Yudong Liu, Chunlan Wang, Shifa Nie, Xiangfei Liu, Lu Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology |
title | Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology |
title_full | Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology |
title_fullStr | Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology |
title_full_unstemmed | Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology |
title_short | Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology |
title_sort | optical fiber cladding spr sensor based on core-shift welding technology |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6427739/ https://www.ncbi.nlm.nih.gov/pubmed/30857278 http://dx.doi.org/10.3390/s19051202 |
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