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Proceedings Paper

Fabry-Perot interferometric fibre optic temperature sensor with polyvinylidene fluoride (PVDF) coating
Author(s): Fairuza Faiz; Marlene Cran; S. F. Collins; G. W. Baxter; Fotios Sidiroglou
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Paper Abstract

A novel polyvinylidene fluoride (PVDF) coated fiber-optic Fabry–Perot interferometric (FFPI) sensor for temperature measurement is proposed and experimentally validated. The sensor head consists of a PVDF thin film formed by the phase inversion process via immersion precipitation at the freshly cleaved endface of a single mode telecommunications optical fibre. The resin polyvinyl butryl (butvar) was used as a cross-linker to promote good adhesion between the optical fibre glass and PVDF in order to reduce operational coupling loss. Sensor operation is demonstrated by shifts of the FFPI reflection spectra and its performance was analysed through measurement of optical thickness or path difference with temperature variation. Experimental data shows that the thermal expansion effect of the PVDF coating is more dominant than its thermo-optic effect. The proposed sensor exhibits an exponential response over 21 to 160 °C inside a tube furnace with a sensitivity that spans between 1.6 nm/°C and 7.5 nm/°C.

Paper Details

Date Published: 30 December 2019
PDF: 2 pages
Proc. SPIE 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 112002V (30 December 2019); doi: 10.1117/12.2539893
Show Author Affiliations
Fairuza Faiz, Victoria Univ. (Australia)
Marlene Cran, Victoria Univ. (Australia)
S. F. Collins, Victoria Univ. (Australia)
G. W. Baxter, Victoria Univ. (Australia)
Fotios Sidiroglou, Victoria Univ. (Australia)


Published in SPIE Proceedings Vol. 11200:
AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019
Arnan Mitchell; Halina Rubinsztein-Dunlop, Editor(s)

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