Patents by Inventor Romain GUYARD

Romain GUYARD has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical fibre curvature sensor and measurement device comprising said sensor
    Patent number: 11131544
    Abstract: An optical fiber curvature sensor. Two networks (R1, R2) with periodic longitudinal modulation of the refractive index of the optical fiber core are inscribed in the fiber (F) one behind the other or one on top of the other. The networks are configured to respectively reflect wavelengths ?1 and ?2 such that ?1=?B+??B1 and ?2=?B+??B2, where ?B is the Bragg wavelength of the networks and where ?B1 and ?B2 are shifts sensitive to the temperature, to deformations and to the curvature of the optical fiber. The two networks are defined so that the quantities ??B1 and ??B2 have substantially identical sensitivity to temperature and to deformations and substantially opposite sensitivity to curvature.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: September 28, 2021
    Assignees: Université de Nantes, Centre National de la Recherche Scientifique
    Inventors: Romain Guyard, Yann Lecieux, Cyril Lupi, Dominique Leduc
  • OPTICAL FIBRE CURVATUR SENSOR AND MEASUREMENT DEVICE COMPRISING SAID SENSOR
    Publication number: 20200240771
    Abstract: An optical fiber curvature sensor. Two networks (R1, R2) with periodic longitudinal modulation of the refractive index of the optical fiber core are inscribed in the fiber (F) one behind the other or one on top of the other. The networks are configured to respectively reflect wavelengths ?1 and ?2 such that ?1=?B+??B1 and ?2=?B+??B2, where ?B is the Bragg wavelength of the networks and where ?B1 and ?B2 are shifts sensitive to the temperature, to deformations and to the curvature of the optical fiber. The two networks are defined so that the quantities ??B1 and ??B2 have substantially identical sensitivity to temperature and to deformations and substantially opposite sensitivity to curvature.
    Type: Application
    Filed: March 23, 2017
    Publication date: July 30, 2020
    Inventors: Romain GUYARD, Yann LECIEUX, Cyril LUPI, Dominique LEDUC