Optical fiber sensors for acoustic emission monitoring

Acoustic emission sensors are most of the time based on piezoelectric sensors, which may not be suited for harsh environments or be too bulky to integrate a large number of them. We present here a system based on Fiber Bragg gratings on optical fibers to measure acoustic emission events. The use of such sensors enables a low intrusivity and measurements in extreme environments. The system is designed to enable measurements under varying environmental conditions, enabling its use in real applications.