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28 September 2015 Combined regenerated fibre Bragg gratings and Fabry-Perot etalons for dual strain and temperature sensing
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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963459 (2015) https://doi.org/10.1117/12.2194860
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil
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.
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Zengling Ran, Haihong Bao, Kevin Cook, Xuezhong Wu, Yunjiang Rao, and John Canning "Combined regenerated fibre Bragg gratings and Fabry-Perot etalons for dual strain and temperature sensing", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963459 (28 September 2015); https://doi.org/10.1117/12.2194860
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