A novel scheme for a fiber-optic heterodyne gyroscope is proposed. This scheme produces two beat-photocurrent signals, including the Sagnac phase shift of opposite sign. The phase-difference measurement of these signals enables us to cancel their common phase factor but to obtain twice the Sagnac phase shift. The operation principle is verified experimentally.
© 1988 Optical Society of America
Original Manuscript: March 22, 1988
Manuscript Accepted: June 8, 1988
Published: September 1, 1988
H. Koseki and Y. Ohtsuka, "Fiber-optic heterodyne gyroscope using two optical beams with orthogonally polarized components," Opt. Lett. 13, 785-787 (1988)