Fiber optic hydrophone sensors and uses thereof
US8661908B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Jun 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/262
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is detecting changes in pressure in a medium, with an optical fiber having a core diameter at an immersion surface contact of the fiber of less than 10 μm; a layer of material deposited on said end of the fiber, the material being of a thickness of from about 2 nm to about 10 nm. Also disclosed is detecting pressure waves in a medium comprising: contacting the medium with a fiber optic, the fiber integrated with a light source and a detector, the fiber optic having a diameter of less than 10 μm at an immersion surface contact of the fiber; providing a thin layer of material on the immersion surface contact, wherein said thin layer of material is of a thickness in a range of from about 2 nm to about 10 nm; and detecting Fresnel back reflections from the immersion end of the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.