Optical accelerometer systems and method
US9417260B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Sep 16, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/60
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An example optical accelerometer system is provided. An optical beam is provided having a predefined center frequency and is frequency-modulated about the predefined center frequency. An optical cavity includes a first mirror at a first end and a second mirror at a second end of the optical cavity. The second mirror is movable along the axial length of the optical cavity in response to an external acceleration, and the optical cavity receives the optical beam and emits a resonated optical beam. An acceleration detection system measures an intensity of the resonated optical beam and calculates a magnitude of the external acceleration along the axial length of the optical cavity based on the intensity of the resonated optical beam resulting from motion of the second mirror. A stabilization system stabilizes the predefined center frequency of the optical beam independently of the external acceleration based on the modulation of the optical beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.