Gamma irradiation response in photonic crystal and standard optical fiber Bragg grating sensors for radiation dosimetry
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.
Keywords
Bragg wavelength shift, Gamma irradiation, Photonic crystal fiber Bragg gratings, Radiation dosimetry, Crystal whiskers, Dosimetry, Electric sensing devices, Fiber optic sensors, Fibers, Gamma rays, Irradiation, Nonlinear optics, Optical data processing, Photonic crystal fibers, Bragg wavelength, Bragg wavelength shift, FBG sensor, Gamma irradiation, Optical fiber Bragg grating sensors, Optical measurement, Radiation dosimeters, Recovery time, Fiber Bragg gratings
Document Type
Conference Proceeding
Date of Publication
1-1-2019
Publication Title
Proceedings of SPIE - The International Society for Optical Engineering
Publisher
SPIE
School
School of Science
RAS ID
30723
Copyright
subscription content
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