Fiber optic particle motion sensor and measuring method using the sensor
US8240207B2 · kind B2 · utility
7Cited by
9References
12Claims
0Family size
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Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jul 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29349
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output. The sensor can be 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. A method of measuring acceleration uses the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.