A fiber optic Sagnac interferometer employing multimode fiber and a simple LED light source was designed and built by the authors. Results from both a computer simulation and actual laboratory tests of such an inherently low cost rotation rate sensor are given in this paper. These are compared to recent theoretical and experimental articles on multimode fiber optic rate sensors appearing mainly in the Soviet literature.
Ronald J. Fredricks,
Dean R. Johnson,
"Low Cost Multimode Fiber Optic Rotation Sensor", Proc. SPIE 0838, Fiber Optic and Laser Sensors V, (23 March 1988); doi: 10.1117/12.942495; https://doi.org/10.1117/12.942495