An FPGA-based demodulation system for fiber Bragg grating sensing

Yongqian Li; Haitao He; Guozhen Yao

doi:10.1117/12.869810

9 November 2010 An FPGA-based demodulation system for fiber Bragg grating sensing

Yongqian Li, Haitao He, Guozhen Yao

Author Affiliations +

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78532F (2010) https://doi.org/10.1117/12.869810
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Yongqian Li, Haitao He, and Guozhen Yao "An FPGA-based demodulation system for fiber Bragg grating sensing", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78532F (9 November 2010); https://doi.org/10.1117/12.869810

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