YANG Xian-hui, ZHANG Qiu-hua, YU Yong-sen, et al. Measurement of temperature-insensitive strain based on reflected bandwidth demodulation of tapered fiber grating[J]. Optics and precision engineering, 2007, 15(5): 651-655.
YANG Xian-hui, ZHANG Qiu-hua, YU Yong-sen, et al. Measurement of temperature-insensitive strain based on reflected bandwidth demodulation of tapered fiber grating[J]. Optics and precision engineering, 2007, 15(5): 651-655.DOI:
A temperature-insensitive strain sensor is presented based on a tunable F-P interferometer to measure the bandwidth of the reflected light from tapered fiber grating(TFG) and the bandwidth demodulating method is demonstrated by a strain loading experiment. Experimental results indicate that the stress sensing system has a high delicacy and the precision of stress measurement is 0.060 N. This sensor has a considerable potential
particularly application for strain sensing in the smart structures. Based on the development of the interrogation system that can demodulate both bandwidth and center wavelength of the reflected light from TFG
a novel sensor that can measure strain and temperature simultaneously is presented.