Optical gyro with free space resonator and method for sensing inertial rotation rate
US7362443B2 · kind B2 · utility
10Cited by
88References
18Claims
0Family size
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Key dates
| Filing date | Nov 17, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Apr 7, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/726
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus are provided for a low cost optical gyro with a free space closed optical path. A ring resonator comprises a substrate and reflectors formed or placed on the substrate. The reflectors comprise a closed optical path and are configured to direct each of first and second light beams in a different counter-propagating direction in the closed optical path. Each of the first and second light beams frequencies are tuned to the resonance frequency of the resonator in the direction of propagation for which the light beam is circulating in the closed optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.