Research and theoretical analysis of new fiber Bragg grating sensor demodulation system

Yaocheng Li; Hai-tong Wang; Ping Wang

doi:10.1117/12.2081726

19 February 2015 Research and theoretical analysis of new fiber Bragg grating sensor demodulation system

Yaocheng Li, Hai-tong Wang, Ping Wang

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 944937 (2015) https://doi.org/10.1117/12.2081726
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

Abstract

In order to measure high-precision and large scale sensing signal and solve two-values question in signal detecting of strain sensor, we design a new kind of FBG matching demodulation system based on fiber Bragg grating matching demodulation principle. Through paralleling connection two groups of grating-matching whose center wavelength equal to sensing grating’s, and then analyzing reflectance spectrum, we could get the relationship of strain and optical power detected by photoelectric detector. Then we can set up the theoretical model and complete system simulation. The simulation results show that the scheme is feasible. The scheme not only can solve the problem of double values and can simultaneously detect the positive and negative strain. The sensor measurement range can be up to952ue.

Citation Download Citation

Yaocheng Li, Hai-tong Wang, and Ping Wang "Research and theoretical analysis of new fiber Bragg grating sensor demodulation system", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 944937 (19 February 2015); https://doi.org/10.1117/12.2081726

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