The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2025
Filed:
Dec. 24, 2020
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Universite Grenoble Alpes, Saint Martin D 'Heres, FR;
C.n.r.s., Paris, FR;
Institut Polytechnique DE Grenoble, Grenoble, FR;
Thomas Lauwers, Grenoble, FR;
Skandar Basrour, Grenoble, FR;
Jean-Guillaume Coutard, Grenoble, FR;
Alain Gliere, Grenoble, FR;
Guillaume Laffont, Grenoble, FR;
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris, FR;
UNIVERSITE GRENOBLE ALPES, Saint Martin D 'Heres, FR;
C.N.R.S., Paris, FR;
INSTITUT POLYTECHNIQUE DE GRENOBLE, Grenoble, FR;
Abstract
The invention relates to a device and method for detecting an acoustic wave propagating toward a membrane, the membrane carrying a waveguide comprising an optical cavity defining a resonant frequency. Under the effect of a vibration of the membrane, the resonance frequency of the optical cavity varies. The device includes a light source for directing a light wave into the optical cavity, and a servo circuit for servo-controlling the wavelength of the light wave to the resonant wavelength of the optical cavity. Monitoring the variation in the wavelength of the light wave allows an amplitude of the acoustic wave to be estimated.