Cai Ke, Liu Chuntong, Li Hongcai, et al. Research on differential pressure FBG sensor static hydraulic properties[J]. 2013,(1):39-41. DOI: 10.13756/j.gtxyj.2013.01.003.
On the basis of analyzing the sensing principle of differential pressure Fiber Bragg Grating(FBG) sensors
its static differential pressure sensing properties are investigated by using a hydraulic tester and a Q8384 spectrometer and the errors of the experimental results analyzed.The results indicate that the FBG sensibility coefficient is 3 pm/kPa in the pressure range of 0-0.35 MPa and the FBG wavelength varies linearly with the differential pressure with little hysteresis effect
proving that this sensor can be used in hydraulic systems for flow measurement.