Abstract

Nonreciprocal phase shift has been predicted and observed in a fiber-optic gyroscope based on a Sagnac interferometer when the intensities of the counterpropagating beams are unequal. The magnitude of this intensity-induced phase shift is 1.4 rad/W power difference. At 1-μW power difference, this is equivalent to a rotation rate of 0.2°/h in our 200-m-long fiber with a core radius of 2.25 μm that is wound around a spool of 19-cm diameter. The data are consistent with theoretical predictions based on four-wave mixing in the quartz fiber.

© 1982 Optical Society of America

Intensity-dependent nonreciprocal phase shift in fiber-optic gyroscopes for light sources with low coherence

K. Petermann
Opt. Lett. 7(12) 623-625 (1982)

Sensitivity of a fiber-optic gyroscope to environmental magnetic fields

K. Böhm, K. Petermann, and E. Weidel
Opt. Lett. 7(4) 180-182 (1982)

Compensation of the optical Kerr effect in fiber-optic gyroscopes

R. A. Bergh, H. C. Lefevre, and H. J. Shaw
Opt. Lett. 7(6) 282-284 (1982)

Source statistics and the Kerr effect in fiber-optic gyroscopes

R. A. Bergh, B. Culshaw, C. C. Cutler, H. C. Lefevre, and H. J. Shaw
Opt. Lett. 7(11) 563-565 (1982)

Nonreciprocal phase shift caused by magnetic-thermal coupling of a polarization maintaining fiber optic gyroscope

Dengwei Zhang, Yuxiang Zhao, Wenlan Fu, Wenqing Zhou, Cheng Liu, Xiaowu Shu, and Shuangliang Che
Opt. Lett. 39(6) 1382-1385 (2014)