An optical heterodyne fiber gyro, which we recently proposed, is improved to reduce the zero-point drift. A reference interferometer is introduced in the improved configuration beside the sensing interferometer to obtain the Sagnac phase shift, which monitors the drift caused in the optical system. Experimental results demonstrate successful reduction of the drift.
© 1990 Optical Society of America
Kazuo Hotate and Shigeatsu Samukawa, "Drift reduction in an optical heterodyne fiber gyro," Appl. Opt. 29, 1345-1349 (1990)