5 October 2009 Optomechanical fiber gyroscope
Author Affiliations +
Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750345 (2009) https://doi.org/10.1117/12.835141
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom
Abstract
We report a miniature mechanical gyroscope that utilizes optical means to detect rotation-induced displacements in a mechanical structure. It utilizes the Foucault pendulum principle used in some existing MEMS gyroscopes: a rotating reference frame induces a Coriolis force that oscillates the structure about an axis orthogonal to the driving-mode axis. The main difference with similar MEMS gyroscopes is that this rotation-induced oscillation is sensed using a pair of high-finesse fiber Fabry-Perot displacement sensors instead of a capacitive device. The drive axis is also driven by radiation pressure inside a set of auxiliary fiber Fabry-Perot cavities, making this device immune to electromagnetic interference. Calculations predict that a rotation sensitivity on the order of 1°/h/Hz1/2 is achievable. We show that this structure solves several problems associated with MEMS gyroscopes utilizing electrostatic sensing methods.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Onur Kilic, Onur Kilic, Onur Can Akkaya, Onur Can Akkaya, Hyejun Ra, Hyejun Ra, Michel Digonnet, Michel Digonnet, Gordon Kino, Gordon Kino, Olav Solgaard, Olav Solgaard, } "Optomechanical fiber gyroscope", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750345 (5 October 2009); doi: 10.1117/12.835141; https://doi.org/10.1117/12.835141
PROCEEDINGS
4 PAGES


SHARE
Back to Top