We review the kinematic explanation of the Sagnac effect in fiber gyroscopes and recall that the index of the dielectric medium does not have any influence. Furthermore, we present a novel electrodynamic approach that confirms in more detail that the Sagnac phase shift of a ring-waveguide interferometer is the same as for the original Sagnac experiment with plane waves in a vacuum.
© 1981 Optical Society of America
Original Manuscript: April 21, 1981
Published: August 1, 1981
H. J. Arditty and H. C. Lefèvre, "Sagnac effect in fiber gyroscopes," Opt. Lett. 6, 401-403 (1981)