Multi point strain and temperature sensing based on Brillouin optical time domain reflectometry

Che, T., Xu, X., Lalam, Nageswara, Ng, Wai Pang and Harrington, Peter (2018) Multi point strain and temperature sensing based on Brillouin optical time domain reflectometry. In: 2018 11th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP). IEEE, Piscataway, pp. 1-4. ISBN 9781538613351, 9781538613344, 9781538613368

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Abstract

In this paper, multiple points of strain and temperature measurement in real-time is investigated using a Brillouin optical time domain reflectometry (BOTDR) system. The Brillouin frequency shift (BFS) is analysed with strain and temperature effects applied at various locations of the sensing fibre. In addition, a passive depolarizer was employed in order to reduce the polarization noise. The temperature and strain coefficients are found to be 0.79 MHz/°C and 0.057 MHz/μϵ.

Item Type:	Book Section
Uncontrolled Keywords:	Brillouin gain spectrum, strain measurement, temperature measurement
Subjects:	F300 Physics
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	John Coen
Date Deposited:	01 May 2020 09:47
Last Modified:	01 May 2020 09:48
URI:	http://nrl.northumbria.ac.uk/id/eprint/42980

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