Gamma irradiation response in photonic crystal and standard optical fiber Bragg grating sensors for radiation dosimetry
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Date
2019-12-30
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Journal ISSN
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Publisher
Society of Photo-Optical Instrumentation Engineers
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. © (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).
Description
Keywords
Wavelengths, Dosimetry, Optical fibers, Irradiation, Simulation, Functions
Citation
Baccini, D., Hinckley, S., Canning, J., Cook, K., Allwood, G., Wild, G., Davies, J., & Banos, C. (2019). Gamma irradiation response in photonic crystal and standard optical fiber Bragg grating sensors for radiation dosimetry. Paper presented to the AOS Australian Conference on Optical Fibre Technology, ACOFT 2019 and Australian Conference on Optics, Lasers, and Spectroscopy, ACOLS 2019, 8-12 December 2019, Melbourne, Victoria. In A. Mitchell, & H. Rubinsztein-Dunlop (eds), Proceedings AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS), (Vol. 11200, pp. 27-29). doi:10.1117/12.2539904