Design and Validation of an Effective Temperature Compensated-Based FBG Sensor Package for Air Vehicle Applications

Abstract

The use of Fiber Bragg Gratings (FBGs) sensors is increasing day by day because of its unique properties such as lightness, immunity to EM and RF signals, minimized harness complexity, and suitability to array manufacturing. Thereby, in the last decades, it has become the first choice in terms of data collection and long-term health monitoring in the aerospace field. On the other hand, like other conventional sensors, Fiber Bragg Grating sensors are also gets affected by the rapid change of environmental conditions such as temperature. In this context, to avoid false alarm situations and compensate for the effect of environmental condition changes, in this study a newly designed temperature compensation metal package structure has been explained and discussed in detail. Obtained results showed that, with the newly designed package structure, the temperature effect had been reduced with success over %95, and the proposed package had been eligible to operate up to 80°C without needing any external reference sensors.