Research on Demodulation System for Fiber Bragg Grating Sensor Based on Tunable Laser Light


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In order to measure the signals greater than kHz such as vibration, high frequency strain and ultrasonic wave, a high-speed demodulation system for fiber Bragg grating(FBG)sensor based on tunable laser light was established. The measuring principle of the demodulation system was presented. The output curve and the wavelength measurement sensitivity were given by theoretical deduction. Then the 41434.71028 [Hz] vibration signal of ultrasonic cleaner was measured using this system. The system was compactly built with high demodulation speed and S/N(signal to noise ratio), meeting the special requirement for the high frequency signals measurement.



Advanced Materials Research (Volumes 341-342)

Edited by:

Liu Guiping






L. J. Meng et al., "Research on Demodulation System for Fiber Bragg Grating Sensor Based on Tunable Laser Light", Advanced Materials Research, Vols. 341-342, pp. 838-842, 2012

Online since:

September 2011




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