Traditionally the Sagnac fiber-optic sensor has been used to make measurements of rotation. By utilizing acousto-optic modulators to provide a frequency difference between the counterpropagating light beams in the sensing coil other environmental disturbances can be measured with high accuracy. A discussion of the various configurations used to cause a frequency difference between the counterpropagating light beams is given. A description of a laboratory model using one of these configurations is discussed and data demonstrating the ability to measure environmental disturbances accurately is presented.

Date Published: 10 June 1987
PDF: 6 pages
Proc. SPIE 0753, Acousto-Optic, Electro-Optic, & Magneto-Optic Devices & Applications, (10 June 1987); doi: 10.1117/12.939950

Published in SPIE Proceedings Vol. 0753:
Acousto-Optic, Electro-Optic, & Magneto-Optic Devices & Applications
John A. Lucero, Editor(s)