13 May 2013 Applications of tilted fiber Bragg grating in liquid parameters measurement
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Abstract
We present and experimentally analyze the applications of tilted fiber Bragg grating (TFBG) for the measurement of liquid parameters, including the concentration (or refractive index), liquid-level and dynamic concentration change. On the basis of analyzing the measurement principle of refractive index using TFBG, its spectral variations with the glycerol concentration and liquid-level are obtained. Meanwhile, a fast demodulation technique monitoring the small variation of TFBG transmission power in a strong background is employed to measure dynamic change in the liquid concentration. The results show that the method is easy to achieve fast, cost-effective measurement of the change process of liquid concentration.
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Biqiang Jiang, Jianlin Zhao, Abdul Rauf, Chuan Qin, Wei Jiang, "Applications of tilted fiber Bragg grating in liquid parameters measurement", Proc. SPIE 8788, Optical Measurement Systems for Industrial Inspection VIII, 878812 (13 May 2013); doi: 10.1117/12.2019874; https://doi.org/10.1117/12.2019874
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