with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers

Full Title

Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects > Turn-sensitive devices without moving masses > Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams > with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers

Classification Context

Section:

PHYSICS

Class:

MEASURING; TESTING

Subclass:

MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY