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Proceedings Paper

Research and theoretical analysis of new fiber Bragg grating sensor demodulation system
Author(s): Yaocheng Li; Hai-tong Wang; Ping Wang
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Paper 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.

Paper Details

Date Published: 19 February 2015
PDF: 8 pages
Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 944937 (19 February 2015); doi: 10.1117/12.2081726
Show Author Affiliations
Yaocheng Li, Xi’an Univ. of Posts and Telecommunications (China)
Hai-tong Wang, Armed Police Engineering College (China)
Ping Wang, Xi’an Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 9449:
The International Conference on Photonics and Optical Engineering (icPOE 2014)
Ailing Tian; Anand Asundi; Weiguo Liu; Chunmin Zhang, Editor(s)

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