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Real-time analysis of arc-induced Long Period Gratings under gamma irradiation

In this paper, we present a comparative experimental and theoretical study on gamma radiation sensitivity of Long Period Gratings (LPGs), fabricated by electric arc discharge technique, as monitored in three single mode optical fibers supplied by different manufacturers. A real-time measurement of L...

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Autores principales: Esposito, Flavio, Ranjan, Rajeev, Stăncălie, Andrei, Sporea, Dan, Neguţ, Daniel, Becherescu, Nicu, Campopiano, Stefania, Iadicicco, Agostino
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5338260/
https://www.ncbi.nlm.nih.gov/pubmed/28262784
http://dx.doi.org/10.1038/srep43389
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author Esposito, Flavio
Ranjan, Rajeev
Stăncălie, Andrei
Sporea, Dan
Neguţ, Daniel
Becherescu, Nicu
Campopiano, Stefania
Iadicicco, Agostino
author_facet Esposito, Flavio
Ranjan, Rajeev
Stăncălie, Andrei
Sporea, Dan
Neguţ, Daniel
Becherescu, Nicu
Campopiano, Stefania
Iadicicco, Agostino
author_sort Esposito, Flavio
collection PubMed
description In this paper, we present a comparative experimental and theoretical study on gamma radiation sensitivity of Long Period Gratings (LPGs), fabricated by electric arc discharge technique, as monitored in three single mode optical fibers supplied by different manufacturers. A real-time measurement of LPGs’ wavelength shift was performed until a total dose of 35 kGy was reached, with average dose rate of 0.18 kGy/h, the irradiation being done at room temperature. In one case, a maximum radiation sensitivity of 1.34 nm/kGy was recorded for doses up to 0.5 kGy. Moreover, by combining experimental results with numerical simulations, it was found that changes occurred in the core refractive index of the irradiated optical fibers up to 2.5 ∙ 10(−5). The increase of the core thermo-optic coefficient up to 1.5 ∙ 10(−8)/°C was observed as well.
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spelling pubmed-53382602017-03-08 Real-time analysis of arc-induced Long Period Gratings under gamma irradiation Esposito, Flavio Ranjan, Rajeev Stăncălie, Andrei Sporea, Dan Neguţ, Daniel Becherescu, Nicu Campopiano, Stefania Iadicicco, Agostino Sci Rep Article In this paper, we present a comparative experimental and theoretical study on gamma radiation sensitivity of Long Period Gratings (LPGs), fabricated by electric arc discharge technique, as monitored in three single mode optical fibers supplied by different manufacturers. A real-time measurement of LPGs’ wavelength shift was performed until a total dose of 35 kGy was reached, with average dose rate of 0.18 kGy/h, the irradiation being done at room temperature. In one case, a maximum radiation sensitivity of 1.34 nm/kGy was recorded for doses up to 0.5 kGy. Moreover, by combining experimental results with numerical simulations, it was found that changes occurred in the core refractive index of the irradiated optical fibers up to 2.5 ∙ 10(−5). The increase of the core thermo-optic coefficient up to 1.5 ∙ 10(−8)/°C was observed as well. Nature Publishing Group 2017-03-06 /pmc/articles/PMC5338260/ /pubmed/28262784 http://dx.doi.org/10.1038/srep43389 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Esposito, Flavio
Ranjan, Rajeev
Stăncălie, Andrei
Sporea, Dan
Neguţ, Daniel
Becherescu, Nicu
Campopiano, Stefania
Iadicicco, Agostino
Real-time analysis of arc-induced Long Period Gratings under gamma irradiation
title Real-time analysis of arc-induced Long Period Gratings under gamma irradiation
title_full Real-time analysis of arc-induced Long Period Gratings under gamma irradiation
title_fullStr Real-time analysis of arc-induced Long Period Gratings under gamma irradiation
title_full_unstemmed Real-time analysis of arc-induced Long Period Gratings under gamma irradiation
title_short Real-time analysis of arc-induced Long Period Gratings under gamma irradiation
title_sort real-time analysis of arc-induced long period gratings under gamma irradiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5338260/
https://www.ncbi.nlm.nih.gov/pubmed/28262784
http://dx.doi.org/10.1038/srep43389
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