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The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations

In this work, we experimentally analyzed the effect of tapering in light-diffusing optical fibers (LDFs) when employed as surface plasmon resonance (SPR)-based sensors. Although tapering is commonly adopted to enhance the performance of plasmonic optical fiber sensors, we have demonstrated that in t...

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Autores principales: Cennamo, Nunzio, Arcadio, Francesco, Zeni, Luigi, Catalano, Ester, Del Prete, Domenico, Buonanno, Gionatan, Minardo, Aldo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512122/
https://www.ncbi.nlm.nih.gov/pubmed/34640653
http://dx.doi.org/10.3390/s21196333
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author Cennamo, Nunzio
Arcadio, Francesco
Zeni, Luigi
Catalano, Ester
Del Prete, Domenico
Buonanno, Gionatan
Minardo, Aldo
author_facet Cennamo, Nunzio
Arcadio, Francesco
Zeni, Luigi
Catalano, Ester
Del Prete, Domenico
Buonanno, Gionatan
Minardo, Aldo
author_sort Cennamo, Nunzio
collection PubMed
description In this work, we experimentally analyzed the effect of tapering in light-diffusing optical fibers (LDFs) when employed as surface plasmon resonance (SPR)-based sensors. Although tapering is commonly adopted to enhance the performance of plasmonic optical fiber sensors, we have demonstrated that in the case of plasmonic sensors based on LDFs, the tapering produces a significant worsening of the bulk sensitivity (roughly 60% in the worst case), against a slight decrease in the full width at half maximum (FWHM) of the SPR spectra. Furthermore, we have demonstrated that these aspects become more pronounced when the taper ratio increases. Secondly, we have established that a possible alternative exists in using the tapered LDF as a modal filter after the sensible region. In such a case, we have determined that a good trade-off between the loss in sensitivity and the FWHM decrease could be reached.
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spelling pubmed-85121222021-10-14 The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations Cennamo, Nunzio Arcadio, Francesco Zeni, Luigi Catalano, Ester Del Prete, Domenico Buonanno, Gionatan Minardo, Aldo Sensors (Basel) Communication In this work, we experimentally analyzed the effect of tapering in light-diffusing optical fibers (LDFs) when employed as surface plasmon resonance (SPR)-based sensors. Although tapering is commonly adopted to enhance the performance of plasmonic optical fiber sensors, we have demonstrated that in the case of plasmonic sensors based on LDFs, the tapering produces a significant worsening of the bulk sensitivity (roughly 60% in the worst case), against a slight decrease in the full width at half maximum (FWHM) of the SPR spectra. Furthermore, we have demonstrated that these aspects become more pronounced when the taper ratio increases. Secondly, we have established that a possible alternative exists in using the tapered LDF as a modal filter after the sensible region. In such a case, we have determined that a good trade-off between the loss in sensitivity and the FWHM decrease could be reached. MDPI 2021-09-22 /pmc/articles/PMC8512122/ /pubmed/34640653 http://dx.doi.org/10.3390/s21196333 Text en © 2021 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 Communication
Cennamo, Nunzio
Arcadio, Francesco
Zeni, Luigi
Catalano, Ester
Del Prete, Domenico
Buonanno, Gionatan
Minardo, Aldo
The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations
title The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations
title_full The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations
title_fullStr The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations
title_full_unstemmed The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations
title_short The Role of Tapered Light-Diffusing Fibers in Plasmonic Sensor Configurations
title_sort role of tapered light-diffusing fibers in plasmonic sensor configurations
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512122/
https://www.ncbi.nlm.nih.gov/pubmed/34640653
http://dx.doi.org/10.3390/s21196333
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