Online Gamma Radiation Monitoring Using Few-Mode Polymer CYTOP Fiber Bragg Gratings

Ivan Chapalo; Andrei Goussarov; Andreas Ioannou; Andreas Pospori; Karima Chah; Ying-Gang Nan; Kyriacos Kalli; Patrice Mégret

doi:10.3390/s23010039

Online Gamma Radiation Monitoring Using Few-Mode Polymer CYTOP Fiber Bragg Gratings

Ivan Chapalo, Andrei Goussarov, Andreas Ioannou, Andreas Pospori, Karima Chah, Ying-Gang Nan, Kyriacos Kalli, Patrice Mégret

Nuclear Engineering Office

Research output › peer-review

Abstract

We investigated the gamma radiation response of fiber Bragg gratings (FBGs) inscribed in a few-mode polymer optical fiber. The fiber had a graded-index CYTOP core of 20 µm and XYLEX overclad of 250 µm in diameter. Four FBGs were exposed to gamma radiation during four irradiation sessions at a 5.3 kGy/h dose rate. The FBGs showed a linear Bragg wavelength shift with the received dose with a mean sensitivity of −3.95 pm/kGy at 43 °C. The increased temperature provides a rise in the sensitivity: it reached −10.6 pm/kGy at 58 °C. After irradiation, the FBGs showed partial recovery, which increased with the received dose. Furthermore, the FBG’s reflection power decreased with the dose. This attenuation is mainly due to insertion losses caused by the radiation induced attenuation in the CYTOP fiber. Linear response to the received dose makes CYTOP FBGs attractive for gamma radiation dosimetry. However, temperature dependence of the sensitivity should be compensated in practical applications.

Original language	English
Article number	39
Number of pages	12
Journal	Sensors
Volume	23
Issue number	1
DOIs	https://doi.org/10.3390/s23010039
State	Published - Jan 2023

ASJC Scopus subject areas

Analytical Chemistry
Information Systems
Instrumentation
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Biochemistry

Access to Document

10.3390/s23010039

Cite this

@article{0e92466642314d7e98d84f3d5a0fa364,

title = "Online Gamma Radiation Monitoring Using Few-Mode Polymer CYTOP Fiber Bragg Gratings",

abstract = "We investigated the gamma radiation response of fiber Bragg gratings (FBGs) inscribed in a few-mode polymer optical fiber. The fiber had a graded-index CYTOP core of 20 µm and XYLEX overclad of 250 µm in diameter. Four FBGs were exposed to gamma radiation during four irradiation sessions at a 5.3 kGy/h dose rate. The FBGs showed a linear Bragg wavelength shift with the received dose with a mean sensitivity of −3.95 pm/kGy at 43 °C. The increased temperature provides a rise in the sensitivity: it reached −10.6 pm/kGy at 58 °C. After irradiation, the FBGs showed partial recovery, which increased with the received dose. Furthermore, the FBG{\textquoteright}s reflection power decreased with the dose. This attenuation is mainly due to insertion losses caused by the radiation induced attenuation in the CYTOP fiber. Linear response to the received dose makes CYTOP FBGs attractive for gamma radiation dosimetry. However, temperature dependence of the sensitivity should be compensated in practical applications.",

keywords = "Dosimetry, Gamma rays, Irradiation, Temperature distribution, Bragg wavelength shift, CYTOP, Dose rate, Exposed to, Gamma radiation dosimetry, Graded index, Polymer optical fibre, Polymer perfluorinated fiber, Radiation monitoring, Radiation response, Fiber Bragg gratings, gamma radiation, polymer perfluorinated fiber, polymer optical fiber, gamma radiation dosimetry, fiber Bragg gratings",

author = "Ivan Chapalo and Andrei Goussarov and Andreas Ioannou and Andreas Pospori and Karima Chah and Ying-Gang Nan and Kyriacos Kalli and Patrice M{\'e}gret",

note = "Score=10 - Gold Open Access Funding Information: This research was funded by Fonds De La Recherche Scientifique–FNRS (T.0163.19 “RADPOF”). The research leading to these results also received funding from the Horizon 2020 program of the European Union (Marie Sk{\l}odowska-Curie Actions-Individual Fellowships) under REA grant agreement no. 844618 (project POSPORI) and the Cyprus Research and Innovation Foundation (EXCELLENCE/0918/0324 “T-Sense”). Publisher Copyright: {\textcopyright} 2022 by the authors.",

year = "2023",

month = jan,

doi = "10.3390/s23010039",

language = "English",

volume = "23",

journal = "Sensors",

issn = "1424-8220",

publisher = "MDPI",

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TY - JOUR

T1 - Online Gamma Radiation Monitoring Using Few-Mode Polymer CYTOP Fiber Bragg Gratings

AU - Chapalo, Ivan

AU - Goussarov, Andrei

AU - Ioannou, Andreas

AU - Pospori, Andreas

AU - Chah, Karima

AU - Nan, Ying-Gang

AU - Kalli, Kyriacos

AU - Mégret, Patrice

N1 - Score=10 - Gold Open Access Funding Information: This research was funded by Fonds De La Recherche Scientifique–FNRS (T.0163.19 “RADPOF”). The research leading to these results also received funding from the Horizon 2020 program of the European Union (Marie Skłodowska-Curie Actions-Individual Fellowships) under REA grant agreement no. 844618 (project POSPORI) and the Cyprus Research and Innovation Foundation (EXCELLENCE/0918/0324 “T-Sense”). Publisher Copyright: © 2022 by the authors.

PY - 2023/1

Y1 - 2023/1

N2 - We investigated the gamma radiation response of fiber Bragg gratings (FBGs) inscribed in a few-mode polymer optical fiber. The fiber had a graded-index CYTOP core of 20 µm and XYLEX overclad of 250 µm in diameter. Four FBGs were exposed to gamma radiation during four irradiation sessions at a 5.3 kGy/h dose rate. The FBGs showed a linear Bragg wavelength shift with the received dose with a mean sensitivity of −3.95 pm/kGy at 43 °C. The increased temperature provides a rise in the sensitivity: it reached −10.6 pm/kGy at 58 °C. After irradiation, the FBGs showed partial recovery, which increased with the received dose. Furthermore, the FBG’s reflection power decreased with the dose. This attenuation is mainly due to insertion losses caused by the radiation induced attenuation in the CYTOP fiber. Linear response to the received dose makes CYTOP FBGs attractive for gamma radiation dosimetry. However, temperature dependence of the sensitivity should be compensated in practical applications.

AB - We investigated the gamma radiation response of fiber Bragg gratings (FBGs) inscribed in a few-mode polymer optical fiber. The fiber had a graded-index CYTOP core of 20 µm and XYLEX overclad of 250 µm in diameter. Four FBGs were exposed to gamma radiation during four irradiation sessions at a 5.3 kGy/h dose rate. The FBGs showed a linear Bragg wavelength shift with the received dose with a mean sensitivity of −3.95 pm/kGy at 43 °C. The increased temperature provides a rise in the sensitivity: it reached −10.6 pm/kGy at 58 °C. After irradiation, the FBGs showed partial recovery, which increased with the received dose. Furthermore, the FBG’s reflection power decreased with the dose. This attenuation is mainly due to insertion losses caused by the radiation induced attenuation in the CYTOP fiber. Linear response to the received dose makes CYTOP FBGs attractive for gamma radiation dosimetry. However, temperature dependence of the sensitivity should be compensated in practical applications.

KW - Dosimetry

KW - Gamma rays

KW - Irradiation

KW - Temperature distribution

KW - Bragg wavelength shift

KW - CYTOP

KW - Dose rate

KW - Exposed to

KW - Gamma radiation dosimetry

KW - Graded index

KW - Polymer optical fibre

KW - Polymer perfluorinated fiber

KW - Radiation monitoring

KW - Radiation response

KW - Fiber Bragg gratings

KW - gamma radiation

KW - polymer perfluorinated fiber

KW - polymer optical fiber

KW - gamma radiation dosimetry

KW - fiber Bragg gratings

UR - http://www.scopus.com/inward/record.url?scp=85145978648&partnerID=8YFLogxK

U2 - 10.3390/s23010039

DO - 10.3390/s23010039

M3 - Article

SN - 1424-8220

VL - 23

JO - Sensors

JF - Sensors

IS - 1

M1 - 39

ER -