Fibre-Optic Gyroscope GYROPT

The operation of an IFOG is based on the Sagnac effect, in which rotational movements are measured by sending two identical beams of light, but in opposite directions, through a fibre-optic coil. The beam of light travelling against the direction of rotation experiences a slightly shorter path delay than the other beam, resulting in a phase difference between the two. Through the resulting phase measurement between the two beams, it is possible to determine the changes in orientation due to rotation.

A gyroscope is one of the key subsystems in many complex systems: satellites, ships, submarines… as well as in systems that will increase their autonomous operation capabilities in the coming years, such as UAVs or self-driving cars. Therefore, the need for such devices is currently strong at the market level, and will increase in the coming years.