Analysis of Brillouin Frequency Shift in Distributed Optical Fiber Sensor System for Strain and Temperature Monitoring

Fu, Yong Qing, Wu, Qiang, Dai, Xuewu, Ng, Wai Pang and Lalam, Nageswara (2016) Analysis of Brillouin Frequency Shift in Distributed Optical Fiber Sensor System for Strain and Temperature Monitoring. In: Proceedings of the 4th International Conference on Photonics, Optics and Laser Technology. Scitepress, pp. 333-340. ISBN 978-989-758-174-8

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Abstract

In this paper, we have analyzed Brillouin frequency shift (BFS) in single mode silica optical fiber. The BFS is analyzed in conventional Brillouin optical time domain analysis (BOTDA) at operating wavelength of 1550 nm by a pump-probe technique. The effects of strain and temperature on BFS are fully characterized. We found that, the BFS change of 0.06 MHz/µ-strain and 1.26 MHz/oC, respectively. The BFS changes in Brillouin gain and Brillouin loss mechanism have been analyzed. In addition, we also presented Brillouin linewidth and peak gain variations of Brillouin gain spectrum with various temperature and strain values. The results demonstrate, the BFS have a strong linear relationship with strain and temperature along the sensing fiber.

Item Type:	Book Section
Uncontrolled Keywords:	Brillouin Frequency Shift (BFS), Distributed Optical Fiber Sensors, Brillouin Scattering
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Becky Skoyles
Date Deposited:	20 Jun 2016 07:58
Last Modified:	12 Oct 2019 19:21
URI:	http://nrl.northumbria.ac.uk/id/eprint/27140

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