Patent · US Active

Multi-mode holographic pressure sensor

US8973445B2 · kind B2 · utility

1Cited by
2References
19Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 5, 2012
Grant dateMar 10, 2015
Priority date—
Expiry dateMay 14, 2033

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01L9/0077
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A holographic pressure sensing apparatus includes a first optical fiber with a diffractive element at its end face, and a light-coupling component for receiving from the first optical fiber end face first and second images respectively formed by interaction with the diffractive element of a first light of a first wavelength and a second light of a second wavelength. Displacement of the light-coupling component, toward or away from the first optical fiber end face, will adjust an overlap of the first and second images, such that a change in a measurement of said overlap will indicate a change of the pressure in the fluid surrounding the casing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.