Optical fiber-based hydrophone
AssigneeOptics11 B.V.
InventorsNiek Rijnveld, Peter Polyvas, Arun Gunda, Rudolf Kyselica, Grzegorz Gruca
Life of this patent
Estimating the term…
Abstract
A hydrophone has a mandrel with a shell and a cylindrical cavity inwardly adjacent to the shell. A passage provides fluid communication between the cylindrical cavity and an exterior environment surrounding the mandrel. The hydrophone further has an optical fiber having an optical sensing section that is at least partially wound on the mandrel. The optical sensing section has an optical characteristic that varies as a function of a radial dimension of the mandrel. The mandrel has a core of solid material having a bulk modulus lower than 0.1 GPa. The cylindrical cavity is between the core and the shell.
Claims30
A hydrophone comprising:
- a mandrel comprising:
- a shell;
- a cylindrical cavity inwardly adjacent to the shell;
- and
- a passage that provides fluid communication between the cylindrical cavity and an exterior environment surrounding the mandrel;
- and
- an optical fiber comprising an optical sensing section that is at least partially wound on the mandrel, the optical sensing section having an optical characteristic that varies as a function of a radial dimension of the mandrel,
- wherein the mandrel comprises a core of solid material having a bulk modulus lower than 0.1 GPa, the cylindrical cavity being comprised between the core and the shell.
Dependencies are inferred from the claim text.