Optimization of fiber-optic Sagnac interferometer for detection of rotational seismic events

Zbigniew Krajewski; Leszek R. Jaroszewicz; Lech Solarz

doi:10.1117/12.620620

24 September 2005 Optimization of fiber-optic Sagnac interferometer for detection of rotational seismic events

Zbigniew Krajewski, Leszek R. Jaroszewicz, Lech Solarz

Proceedings Volume 5952, Optical Fibers: Applications; 59520V (2005) https://doi.org/10.1117/12.620620
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland

Abstract

The optimization of fiber-optic Sagnac interferometer as a sensor for the investigation of seismic rotational waves is presented in this paper. The main parameter of this optimization is maximum system sensitivity for absolute rotation in the limited range of expected velocities. The main system construction bases on the FOG minimum configuration, however the detection by system only rotational velocity without covering it on angle changes needs other approach to this system. The presented in paper theoretical and experimental investigation shows that such system can be made on base of a standard single-mode optical fiber, however needs operation on depolarized light.

Citation Download Citation

Zbigniew Krajewski, Leszek R. Jaroszewicz, and Lech Solarz "Optimization of fiber-optic Sagnac interferometer for detection of rotational seismic events", Proc. SPIE 5952, Optical Fibers: Applications, 59520V (24 September 2005); https://doi.org/10.1117/12.620620

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