Title

Gamma irradiation response in photonic crystal and standard optical fiber Bragg grating sensors for radiation dosimetry

Document Type

Conference Proceeding

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Publisher

SPIE

School

School of Science

RAS ID

30723

Comments

Baccini, D., Hinckley, S., Canning, J., Cook, K., Allwood, G., Wild, G., ... & Banos, C. (2019, December). Gamma irradiation response in photonic crystal and standard optical fiber Bragg grating sensors for radiation dosimetry. In AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019. International Society for Optics and Photonics. https://doi.org/10.1117/12.2539904

Abstract

In this paper, we report the response of Cobalt-60 gamma irradiation on Photonic Crystal Fibre Bragg gratings (PCFFBGs) and standard commercial FBGs (STD-FBGs). Optical measurements were performed to determine the shift of the Bragg wavelength as a function of accumulated dose and relaxation time. To simulate real time conditions of a radiation dosimeter, the FBGs are examined through three consecutive radiation stages followed by very limited recovery times. We were able to obtain a Bragg wavelength shift with both sets of FBGs. The PCF-FBGs response included strong recovery after each irradiation compared to the STD-FBGs. This makes the PCF-FBGs strong candidates as optical fibre FBG sensors in the area of radiation dosimetry. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

DOI

10.1117/12.2539904

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