Developments in laser processing of optical fibre radiation sensors

Andreas Ioannou; Aristi Christofi; Sotia Zavrou; Kyriacos Kalli; David A. Jackson; Wern Kam; Peter Woulfe; Sinead O’Keeffe; Francis J. Sullivan

doi:10.1117/12.2592483

18 April 2021 Developments in laser processing of optical fibre radiation sensors

Andreas Ioannou, Aristi Christofi, Sotia Zavrou, Kyriacos Kalli, David A. Jackson, Wern Kam, Peter Woulfe, Sinead O’Keeffe, Francis J. Sullivan

Author Affiliations +

Proceedings Volume 11773, Micro-structured and Specialty Optical Fibres VII; 117730Q (2021) https://doi.org/10.1117/12.2592483
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Abstract

We present simple and robust designs for optical fiber radiation sensors for dosimetry applications, focusing on improved light gathering efficiency. More specifically, we examined the implementation of compound parabolic concentrators (CPC) using scintillator-based optical fibers. The fabrication of the parabolic concentrator is achieved by femtosecond micromachining at the end face of the polymer fiber. Furthermore, we consider the luminous properties of Gadolinium Oxysulfide (GADOX), an inorganic compound usually used in ceramic scintillators, as an alternative and combine it with laser-shaped polymer optical fibers (POF). The simplicity and ease of implementation of the sensor designs offers the prospect of distributed sensors; adding a wavelength shifting element is discussed to make the sensor more adaptable depending on the selected interrogation system.

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Andreas Ioannou, Aristi Christofi, Sotia Zavrou, Kyriacos Kalli, David A. Jackson, Wern Kam, Peter Woulfe, Sinead O’Keeffe, and Francis J. Sullivan "Developments in laser processing of optical fibre radiation sensors", Proc. SPIE 11773, Micro-structured and Specialty Optical Fibres VII, 117730Q (18 April 2021); https://doi.org/10.1117/12.2592483

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