0.1-nano-strain resolution fiber optic sensor for quasi-static strain measurement with 1 kS/s sampling rate

Jiageng Chen; Qingwen Liu; Xinyu Fan; Lin Ma; Jiangbing Du; Tomochika Tokunaga; Zuyuan He

doi:10.1117/12.2194700

28 September 2015 0.1-nano-strain resolution fiber optic sensor for quasi-static strain measurement with 1 kS/s sampling rate

Jiageng Chen, Qingwen Liu, Xinyu Fan, Lin Ma, Jiangbing Du, Tomochika Tokunaga, Zuyuan He

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96343T (2015) https://doi.org/10.1117/12.2194700
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

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.

Citation Download Citation

Jiageng Chen, Qingwen Liu, Xinyu Fan, Lin Ma, Jiangbing Du, Tomochika Tokunaga, and Zuyuan He "0.1-nano-strain resolution fiber optic sensor for quasi-static strain measurement with 1 kS/s sampling rate", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96343T (28 September 2015); https://doi.org/10.1117/12.2194700

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