Fiber-optic homodyne gyroscope

Abstract From the Canadian patent

Most of the commercially available single mode fiber-optic gyroscopes work like this: a, very short pulse of light from the laser is sent down the fiber. It first travels through the, unidirectional coupler then through the polarizer and then through the optical beam, splitter/combiner which first splits the light beam and then recombines it after it passes, clockwise and counterclockwise through one sensing loop. When the sensing loop is not, rotating (moving) there is going to be no mutual phase offset of the clock and counterclockwise waves when they will recombine after passing through the beam splitter/combiner. When the sensing loop is rotating (moving) the above mentioned, …