Fiber optic gyroscope operating with unpolarized light source
US4653917A · kind A · utility
18Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1983 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Mar 24, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/725
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber optic gyroscope comprising a Sagnac interferometer including a (3.times.3) optical directional coupler. The gyroscope is driven with an essentially unpolarized broadband spatially coherent light beam supplied by a super-luminescent diode source. A significant reduction in baseband noise occurs due to the use of the essentially unpolarized light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.