Fiber optic particle motion sensor system
US7999946B2 · kind B2 · utility
31Cited by
8References
10Claims
0Family size
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Key dates
| Filing date | Oct 16, 2008 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Dec 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29349
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A sensor apparatus combines an optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output, coupled to a high speed interferometric interrogator, through an unbalanced fiber interferometer. The unbalanced interferometer functions to translate optical wavelength shift into phase shift, which is easily demodulated by the interrogator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.