Abstract
Temperature-insensitive pressure measurement using a single fiber Bragg grating (FBG) based on reflection spectrum bandwidth modulation and optical power detection is proposed. A specially designed double-hole cantilever beam (DHCB) is used to provide pressure induced axial strain gradient along the sensing FBG and further modulate the reflection bandwidth of the grating. The bandwidth modulation immunes to spatially uniform temperature effect and the pressure can be unambiguous determined by reflected optical power measurement, avoiding the complex wavelength interrogation system. The thermal fluctuate of the system is less than 1.2 % F.S. for temperature range from -10°C to 80 °C without any temperature compensation.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
