Patents by Inventor Frédéric VAN DIJK

Frédéric VAN DIJK 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).

  • Publication number: 20230019436
    Abstract: An optoelectronic component includes an optical transducer made of III-V semiconductor material and an optical scanning microelectromechanical system comprising a mirror. The optical transducer and the optical scanning microelectromechanical system are produced on a common wafer comprising at least a first layer made of silicon or silicon nitride with a thickness of less than one micron and wherein at least the mirror and its holding springs are produced. In a first variant, the mobile parts of the optical scanning microelectromechanical system are produced in various layers of silicon. In a second variant, the mobile parts of the optical scanning microelectromechanical system are produced in the layer of III-V semiconductor material.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 19, 2023
    Inventors: François DUPORT, Guang-Hua DUAN, Frédéric VAN DIJK, Sylvain DELAGE
  • Publication number: 20220236418
    Abstract: A LIDAR system includes at least one laser source and an optical detection system for detecting radiation emitted by the laser source and reflected by a scene to be observed, wherein the laser source is designed to emit simultaneously at n>1 separate wavelengths ?i, i?[1,n]; the LIDAR system also comprises a diffractive optical component configured to direct the radiation emitted by the laser source to the scene to be observed in a different direction for each the wavelength in a simultaneous manner, the directions being located in a same plane xz; and the optical detection system comprises at least one photodiode arranged so as to be illuminated by the radiation reflected by the scene to be observed, as well an optical system, which is configured to direct laser radiation, emitted by the or another laser source and having a wavelength ?0 which is different from the n wavelengths ?i, to the one or more photodiodes, such that the one or more photodiodes generate a signal comprising the beats of the waveleng
    Type: Application
    Filed: May 29, 2020
    Publication date: July 28, 2022
    Inventors: François DUPORT, Frédéric VAN DIJK, Philippe BOIS
  • Patent number: 10067405
    Abstract: An optoelectronic component for generating and radiating an electromagnetic signal exhibiting a frequency lying between 30 GHz and 10 THz referred to as a microwave frequency, comprises: a planar guide configured to confine and propagate freely in a plane XY a first and a second optical wave exhibiting an optical frequency difference, referred to as a heterodyne beat, equal to the microwave frequency, a system for injecting the optical waves into the planar guide, a photo-mixer coupled to the planar guide to generate, on the basis of the first optical wave and of the second optical wave, a signal exhibiting the microwave frequency, the photo-mixer having an elongated shape exhibiting along an axis Y a large dimension greater than or equal to half the wavelength of the signal, the injection system configured so that the optical waves overlap in the planar guide and are coupled with the photo-mixer over a length along the axis Y at least equal to half the wavelength of the signal, the photo-mixer thus being abl
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: September 4, 2018
    Assignees: THALES, ALCATEL LUCENT
    Inventor: Frédéric Van Dijk
  • Publication number: 20170358901
    Abstract: An optoelectronic component for generating and radiating an electromagnetic signal exhibiting a frequency lying between 30 GHz and 10 THz referred to as a microwave frequency, comprises: a planar guide configured to confine and propagate freely in a plane XY a first and a second optical wave exhibiting an optical frequency difference, referred to as a heterodyne beat, equal to the microwave frequency, a system for injecting the optical waves into the planar guide, a photo-mixer coupled to the planar guide to generate, on the basis of the first optical wave and of the second optical wave, a signal exhibiting the microwave frequency, the photo-mixer having an elongated shape exhibiting along an axis Y a large dimension greater than or equal to half the wavelength of the signal, the injection system configured so that the optical waves overlap in the planar guide and are coupled with the photo-mixer over a length along the axis Y at least equal to half the wavelength of the signal, the photo-mixer thus being abl
    Type: Application
    Filed: December 11, 2015
    Publication date: December 14, 2017
    Inventor: Frédéric VAN DIJK
  • Patent number: 9711940
    Abstract: In the field of narrow linewidth laser sources and a laser device that comprises a laser source and a waveguide of determined refractive index with which it is coupled, a waveguide is single-mode and includes at least four reflectors in the form of trenches etched into the waveguide and irregularly distributed along the waveguide, the distance separating two neighbouring reflectors being above 1 ?m, and the waveguide and the laser source have respective lengths such that the length of waveguide over which the reflectors are located is greater than the length of the laser source itself.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: July 18, 2017
    Assignee: THALES
    Inventors: Guang-Hua Duan, Frédéric Van Dijk, Gaël Kervella
  • Publication number: 20150171593
    Abstract: In the field of narrow linewidth laser sources and a laser device that comprises a laser source and a waveguide of determined refractive index with which it is coupled, a waveguide is single-mode and includes at least four reflectors in the form of trenches etched into the waveguide and irregularly distributed along the waveguide, the distance separating two neighbouring reflectors being above 1 pm, and the waveguide and the laser source have respective lengths such that the length of waveguide over which the reflectors are located is greater than the length of the laser source itself.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 18, 2015
    Applicants: THALES, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Guang-Hua DUAN, Frédéric VAN DIJK, Gaël KERVELLA