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

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

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.

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