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Proceedings Paper

0.1-nano-strain resolution fiber optic sensor for quasi-static strain measurement with 1 kS/s sampling rate
Author(s): Jiageng Chen; Qingwen Liu; Xinyu Fan; Lin Ma; Jiangbing Du; Tomochika Tokunaga; Zuyuan He
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Paper Abstract

We present a newly developed high performance fiber optics sensor for quasi-static strain measurement. The sensor consists of a piece of π-phase shifted FBG for static strain sensing, and fiber Fabry-Perot interferometer for reference, interrogated by an improved sideband interrogation method with real-time feedback loops. Strain resolution of 0.12 nano-strain was achieved with sampling rate up to 1 kS/s in laboratory experiments. Compared with previous sensor systems, the proposed method shows great improvement in the sensing rate as well as the resolution.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96343T (28 September 2015); doi: 10.1117/12.2194700
Show Author Affiliations
Jiageng Chen, Shanghai Jiao Tong Univ. (China)
Qingwen Liu, Shanghai Jiao Tong Univ. (China)
Xinyu Fan, Shanghai Jiao Tong Univ. (China)
Lin Ma, Shanghai Jiao Tong Univ. (China)
Jiangbing Du, Shanghai Jiao Tong Univ. (China)
Tomochika Tokunaga, The Univ. of Tokyo (Japan)
Zuyuan He, Shanghai Jiao Tong Univ. (China)

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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