FBG Strain Sensor Applied in Harsh Environment of Aerospace

We have designed a novel FBG strain sensor in this paper, which is optimized for aerospace application and available in harsh environment. The proposed FBG strain sensor is improved in mechanical structure and filler for aerospace, whose characteristic is investigated by FEM simulation and experimental tests. In our design we fix the grating with special mechanical structure and metal coating to ensure the stability. We have demonstrated that developed sensor could detect the minimum strain of 0.602με by experiment. Our sensor has high sensitivity and good stability and can be used for many aspects in aerospace.