A fiber-optic gyroscope, or FOG, works using the Sagnac effect, just like a ring-laser gyro. However, instead of a using a small rigid cavity as in a ring laser gyro , a long length of looped ...

Compared to open-loop designs, closed-loop gyro also delivers better scale factor (SF) linearity, dynamic range and bias performance, so closed-loop outperforms open-loop in all key performance ...

as well as a Fiber Optic Gyroscope (FOG) from an unknown missile, though possibly from the Tornado family of MRLSes. The latter uses the Sagnac effect to detect the phase shift between two laser ...