Method and arrangement for determining angular velocities
US5363193A · kind A · utility
0Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1992 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Aug 5, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and device are disclosed to measure angular speeds. In order to determine the Sagnac phase from the output signal of a fiber optic annular interferometer, without the need for costly circuits for regulating a phase modulator that acts on the interference light and for regulating the intensity of the light, the Sagnac phase shift .phi. is deduced from the amplitudes (A.sub..nu.-1, A.sub..nu., A.sub..nu.+1) of three spectral lines of the interference light that is emitted by the interferometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.