Research on a fiber Bragg grating sensor system with interferometric demodulation technique with LabVIEW

W. G. Qin; Y. Zhang

doi:10.1117/12.835605

24 August 2009 Research on a fiber Bragg grating sensor system with interferometric demodulation technique with LabVIEW

W. G. Qin, Y. Zhang

Proceedings Volume 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors; 738127 (2009) https://doi.org/10.1117/12.835605
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

A new fiber Bragg grating (FBG) sensing demodulation system based on Lab VIEW and the technology of fiber Bragg grating sensing is designed. The system based on unbalanced M-Z interferometer demodulation technique translates the FBG wavelength signal related with the strain in to phase signal and measures the change of the phase with a phase measurement system based on Lab VIEW. With the characteristics of high resolution and wide measurement range, this sensor system has the capability of measuring static strain as well as dynamic strain. Experimental shows that the result of strain tested and theory one have a good linear relationship. The strain sensitivity of the experiment system is 1.2pm/με.

Citation Download Citation

W. G. Qin and Y. Zhang "Research on a fiber Bragg grating sensor system with interferometric demodulation technique with LabVIEW", Proc. SPIE 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, 738127 (24 August 2009); https://doi.org/10.1117/12.835605

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