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Proceedings Paper

Combined regenerated fibre Bragg gratings and Fabry-Perot etalons for dual strain and temperature sensing
Author(s): Zengling Ran; Haihong Bao; Kevin Cook; Xuezhong Wu; Yunjiang Rao; John Canning
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Paper Abstract

A highly integrated fibre-optic sensor with regenerated fibre Bragg grating (RFBG) and a micro Fabry-Pérot (MFP) is proposed and demonstrated for simultaneous measurement of temperature and strain under high temperature (> 600 °C). The MFP is fabricated by using a 157 nm fluorine gas (F2) laser to micromachine the core of a standard optical fibre. The RFBG is fabricated by regenerating a seed grating written over the Fabry-Pérot. Since the MFP and RFBG have different sensitivity coefficients, their combination can be used to realise simultaneous measurement of temperature and strain. It is believed that such a high-temperature strain sensor could find important applications in many areas where simultaneous measurement of temperature and strain under high temperature is required.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963459 (28 September 2015); doi: 10.1117/12.2194860
Show Author Affiliations
Zengling Ran, Univ. of Electronic Science and Technology of China (China)
Haihong Bao, Univ. of Electronic Science and Technology of China (China)
Kevin Cook, The Univ. of Sydney (Australia)
Xuezhong Wu, Univ. of Electronic Science and Technology of China (China)
Yunjiang Rao, Univ. of Electronic Science and Technology of China (China)
John Canning, The Univ. of Sydney (Australia)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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