System, device and method for detecting seismic acceleration
US8726732B2 · kind B2 · utility
18Cited by
10References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 17, 2009 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Jun 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02209
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting seismic acceleration includes a proof mass; a base for providing a sensor acceleration, relative to the proof mass, based on the seismic acceleration; and an optical fiber portion operatively connected between the proof mass and the base for providing a fiber tension based on the sensor acceleration. A fiber Fabry-Perot interferometer (FFPI) in the optical fiber portion provides an optical characteristic representative of the fiber tension. A compensator applies a compensating tension to the FFPI to compensate for a change of the optical characteristic due to a temperature change of the FFPI.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.