Researches on Fiber Bragg Grating Pressure Sensor

Design a kind fiber Bragg grating(FBG) pressure sensor for measuring the large load pressure in mold chamber.The pressure of mold chamber transit to uniform strength beam by a small column,leading to the center wavelength of fiber Bragg grating pressure sensor which is glue in uniform strength beam changed,measuring the pressure of mold chamber through wavelength demodulate device detecting the changing amount of center wavelength.Experimental results show that: This sensor has very good linearity in the very wide pressure measuring range,and high measuring sensitivity,good precision.