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US 12,105,113 B2Granted
Fibre-optic accelerometer
AssigneePolytech Group ApS
InventorsSascha Kienitz, Laura Lohr, Markus Brams
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Abstract
The invention relates to a fibre-optic accelerometer for determining acceleration along an axis, comprising an optical fibre with a fibre end face and an acoustic membrane with a membrane frame, a deflection mass and connection bridges, the acoustic membrane being designed to reflect, at least in part, a primary radiation from the fibre end face, and the connection bridges connecting the membrane frame and the deflection mass at least at two different axial positions.
Claims18
A fiber optical acceleration sensor for determining an acceleration along an axis, comprising
- an optical fiber with a fiber end face;
- and
- an acoustic membrane with a membrane frame, a deflection mass and connection bridges;
- wherein the acoustic membrane is adapted to at least partially reflect a primary radiation exiting from the fiber end face;
- wherein the connection bridges connect the membrane frame and the deflection mass at at least two axial positions different from each other;
- wherein the fiber optical acceleration sensor is configured as a Fabry-Perot-interferometer;
- wherein the fiber end face of the optical fiber forms a first mirror of the Fabry-Perot-interferometer;
- and
- wherein the acoustic membrane forms a second mirror of the Fabry-Perot-interferometer.
6 more elements
Dependencies are inferred from the claim text.