Publication result detail

Effect of gamma radiation on variously fabricated FBGs to verify the applicability of optical fiber sensors in radioactive environments

DEJDAR, P.; FORAL, Š.; MÜNSTER, P.; NESVADBA, L.; GALLUS, P.; KREJČÍ, J.

Original Title

Effect of gamma radiation on variously fabricated FBGs to verify the applicability of optical fiber sensors in radioactive environments

English Title

Effect of gamma radiation on variously fabricated FBGs to verify the applicability of optical fiber sensors in radioactive environments

Type

Paper in proceedings (conference paper)

Original Abstract

Fiber Bragg gratings (FBGs) are essential for sensing applications in extreme environments, such as those affected by gamma radiation. This paper compares the performance of FBGs fabricated using femtosecond (fs) and ultraviolet (UV) lasers under high-dose gamma irradiation. Three FBGs were subjected to controlled gamma radiation to assess their stability and potential for sensing under such conditions. The results reveal that fs- FBGs exhibit superior resistance to radiation-induced wavelength shifts, with only minor variations attributed to temperature fluctuations. In contrast, UV-laser-fabricated FBGs showed significant wavelength drift, rendering them less suitable for use in gamma-ray environments. These findings underscore the potential of fs-FBGs for precise sensing of temperature, pressure, and strain in high-radiation environments, such as nuclear reactors.

English abstract

Fiber Bragg gratings (FBGs) are essential for sensing applications in extreme environments, such as those affected by gamma radiation. This paper compares the performance of FBGs fabricated using femtosecond (fs) and ultraviolet (UV) lasers under high-dose gamma irradiation. Three FBGs were subjected to controlled gamma radiation to assess their stability and potential for sensing under such conditions. The results reveal that fs- FBGs exhibit superior resistance to radiation-induced wavelength shifts, with only minor variations attributed to temperature fluctuations. In contrast, UV-laser-fabricated FBGs showed significant wavelength drift, rendering them less suitable for use in gamma-ray environments. These findings underscore the potential of fs-FBGs for precise sensing of temperature, pressure, and strain in high-radiation environments, such as nuclear reactors.

Keywords

FBG; femtosecond laser; gamma radiation; optical fiber; sensor; UV laser

Key words in English

FBG; femtosecond laser; gamma radiation; optical fiber; sensor; UV laser

Authors

DEJDAR, P.; FORAL, Š.; MÜNSTER, P.; NESVADBA, L.; GALLUS, P.; KREJČÍ, J.

Released

22.06.2025

Publisher

SPIE

ISBN

9781510691889

Book

29th International Conference on Optical Fiber Sensors

Pages count

4

URL

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13639/3062855/Polarization-sensing-for-optical-network-security--a-comparative-study/10.1117/12.3062855.full

BibTex

@inproceedings{BUT198129,
  author="Petr {Dejdar} and Štěpán {Foral} and Petr {Münster} and Lukáš {Nesvadba} and Petr {Gallus} and Jakub {Krejčí}",
  title="Effect of gamma radiation on variously fabricated FBGs to verify the applicability of optical fiber sensors in radioactive environments",
  booktitle="29th International Conference on Optical Fiber Sensors",
  year="2025",
  pages="4",
  publisher="SPIE",
  doi="10.1117/12.3062841",
  isbn="9781510691889",
  url="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13639/3062855/Polarization-sensing-for-optical-network-security--a-comparative-study/10.1117/12.3062855.full"
}