Method and apparatus for noise reduction in ultrasound detection
US8166825B2 · kind B2 · utility
27Cited by
27References
23Claims
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Key dates
| Filing date | Apr 16, 2010 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Dec 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8968
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for noise reduction in ultrasound detection with the steps of: an optical interferometer having a reference arm and a signal arm that includes a polarization-maintaining probing fiber having a reflective coating at a distal end, a way to couple the probing fiber to ultrasound, a way to generate two output beams from the interferometer, a device to modulate the polarization state of the light in the probing fiber, and a detection mechanism responsive to the ultrasonic signals at the distal tip of the probing fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.