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Proceedings Paper

An FPGA-based demodulation system for fiber Bragg grating sensing
Author(s): Yongqian Li; Haitao He; Guozhen Yao
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Paper Abstract

This paper introduces the principle of fiber Bragg grating (FBG) sensor, designs and realizes a compact wavelength demodulation system for FBG sensing using a Fabry-Perot (F-P) filter. FPGA is adopted as a main controller to control a D/A converter to produce a sawtooth wave for driving the F-P filter, and to design the data acquisition circuit for collecting the output signals of photoelectric detector. The collected data is processed after transmitting to PC through the data transmission circuit, and then the demodulation of FBG wavelength is completed finally. This compact FBG wavelength demodulation system is expected to have wide applications in on-line monitoring of electric power equipment and large structures.

Paper Details

Date Published: 9 November 2010
PDF: 6 pages
Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78532F (9 November 2010); doi: 10.1117/12.869810
Show Author Affiliations
Yongqian Li, North China Electric Power Univ. (China)
Haitao He, North China Electric Power Univ. (China)
Guozhen Yao, North China Electric Power Univ. (China)


Published in SPIE Proceedings Vol. 7853:
Advanced Sensor Systems and Applications IV
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan; Lin Zhang, Editor(s)

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