A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements

A simple and high sensitive method employing a hybrid long period grating (LPG)/chirped fiber Bragg grating (CFBG) for refractive index (RI) measurements is proposed and investigated experimentally. The wide wavelength range of backward cladding modes are excited through the coupling and recoupling...

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Detalles Bibliográficos
Autores principales: Sun, An, Wu, Zhishen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2012
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3435976/
https://www.ncbi.nlm.nih.gov/pubmed/22969347
http://dx.doi.org/10.3390/s120607318
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author Sun, An
Wu, Zhishen
author_facet Sun, An
Wu, Zhishen
author_sort Sun, An
collection PubMed
description A simple and high sensitive method employing a hybrid long period grating (LPG)/chirped fiber Bragg grating (CFBG) for refractive index (RI) measurements is proposed and investigated experimentally. The wide wavelength range of backward cladding modes are excited through the coupling and recoupling between LPG and CFBG. Experimental results indicate that the recoupled cladding modes between LPG and CFBG and core mode are modulated by the surrounding RI and highly sensitive RI measurements can be achieved by simply measuring the reflected intensity changes of the recoupled cladding modes and core mode.
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spelling pubmed-34359762012-09-11 A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements Sun, An Wu, Zhishen Sensors (Basel) Article A simple and high sensitive method employing a hybrid long period grating (LPG)/chirped fiber Bragg grating (CFBG) for refractive index (RI) measurements is proposed and investigated experimentally. The wide wavelength range of backward cladding modes are excited through the coupling and recoupling between LPG and CFBG. Experimental results indicate that the recoupled cladding modes between LPG and CFBG and core mode are modulated by the surrounding RI and highly sensitive RI measurements can be achieved by simply measuring the reflected intensity changes of the recoupled cladding modes and core mode. Molecular Diversity Preservation International (MDPI) 2012-05-30 /pmc/articles/PMC3435976/ /pubmed/22969347 http://dx.doi.org/10.3390/s120607318 Text en © 2012 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 license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Sun, An
Wu, Zhishen
A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_full A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_fullStr A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_full_unstemmed A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_short A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements
title_sort hybrid lpg/cfbg for highly sensitive refractive index measurements
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3435976/
https://www.ncbi.nlm.nih.gov/pubmed/22969347
http://dx.doi.org/10.3390/s120607318
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