Patents by Inventor Jean-Marc Fedeli

Jean-Marc Fedeli 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: 20220317028
    Abstract: A method for analysing a sample uses a resonant support having a surface on which a plurality of separated photonic crystals extends. At least two crystals are configured to capture the same analyte. A resonance wavelength associated with each crystal varies with an amount of analyte in contact with the crystal. The wavelengths define a resonance spectral band between 200-1500 nm. The transmission/reflection of the light is maximum at an associated resonance wavelength. The method includes: illuminating the support in the resonance spectral band, the intensity of the lamination being variable in band; acquiring a measurement image using an image sensor, the image having different regions-of-interest each optically coupled to a photonic crystal; using a reference image representative of an image acquired by the image sensor, when the support is illuminated in the resonance spectral band in a reference configuration; and comparing the measurement image with the reference image.
    Type: Application
    Filed: June 4, 2020
    Publication date: October 6, 2022
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, CPE LYON FORMATION CONTINUE ET RECHERCHE, ECOLE CENTRALE DE LYON, INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE LYON, UNIVERSITE CLAUDE BERNARD LYON 1, AVALUN, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Mathieu DUPOY, Taha BENYATTOU, Lotfi BERGUIGA, Jean-Marc FEDELI, Maryse FOURNIER, Nicolas GAIGNEBET, Cecile JAMOIS, Patrick POUTEAU
  • Publication number: 20220200239
    Abstract: A laser includes a distributed Bragg minor and is configured to emit monochromatic light radiation along a longitudinal direction. The laser has layers, stacked along a first transverse direction normal to the longitudinal direction and made of III-V materials, including an active region configured to emit the radiation. The mirror is formed by periodic lateral corrugations which extend mainly along the longitudinal direction and having a dimension along a second transverse direction normal to the longitudinal direction. The lateral corrugations of the Bragg minor extend from a top surface of the waveguide pattern along the first transverse direction on a height strictly less than the depth, at which the active region is located starting from the top surface, such that a portion of lateral flanks of the waveguide is free of any lateral corrugations at the active region.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Vincent REBOUD, Maryse FOURNIER, Jean-Marc FEDELI
  • Publication number: 20220200238
    Abstract: A laser is provided, including: a distributed Bragg mirror; a waveguide, the laser to emit light radiation along a longitudinal direction x, and the waveguide formed at least in part in a stack of layers made of III-V materials including at least one active region to emit the light radiation, the mirror including lateral corrugations distributed periodically along the direction x in a period ?, the corrugations being carried by at least a lateral plane xz defined by the direction x and a first transverse direction z normal to the direction x, the corrugations having a dimension d along a second transverse direction y normal to the direction x; and a top electrode arranged on the waveguide along the direction z, the corrugations being partly located at lateral flanks of the top electrode, extending parallel to the plane xz, and extending only on the lateral flanks of the top electrode.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Vincent REBOUD, Maryse FOURNIER, Jean-Marc FEDELI
  • Publication number: 20220181850
    Abstract: A method for forming a Bragg reflector includes after forming first trenches in the stack, which are intended to form structures of the distributed Bragg reflector, forming a sacrificial interlayer at least in the first trenches, depositing a second masking layer at least inside the first trenches, forming second trenches intended to form sidewalls of the laser, removing the second masking layer from inside the first trenches, removing said sacrificial interlayer so as to remove, by lift-off, residues of the second masking layer that remain inside the first trenches, and filling said first trenches with at least one metal material.
    Type: Application
    Filed: December 2, 2021
    Publication date: June 9, 2022
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Maryse FOURNIER, Vincent REBOUD, Jean-Marc FEDELI
  • Patent number: 11236417
    Abstract: A method for producing a waveguide including a germanium-based core and a cladding is provided, the method including a step of “low temperature” depositing of a shell after forming the core by engraving, such that the deposition temperature is less than 780° C., followed by a step of “high temperature” depositing of a thick encapsulation layer. The shell and the encapsulation layer at least partially form the cladding of the waveguide. Optionally, a step of annealing under hydrogen at a “low temperature”, less than 750° C., precedes the deposition of the shell. These “low temperature” annealing and depositing steps advantageously make it possible to avoid a post-engraving alteration of the free surfaces of the core during the forming of the cladding which is less germanium-rich.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: February 1, 2022
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Jean-Michel Hartmann, Mickael Brun, Jean-Marc Fedeli, Maryse Fournier
  • Patent number: 10845296
    Abstract: A particle detector is provided, including at least one channel configured to receive at least one fluid including particles; one optical inlet configured to receive at least one incident luminous radiation; one first plurality of reflecting surfaces arranged between the optical inlet and the channel; one matrix of photo detectors arranged facing the channel; and one second plurality of reflecting surfaces arranged between the channel and the matrix of photo detectors such that the channel is disposed between the first and the second pluralities of reflecting surfaces.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: November 24, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Salim Boutami, Mathieu Dupoy, Jean-Marc Fedeli
  • Patent number: 10845242
    Abstract: A measuring device includes a first light source for emitting an excitation beam at an excitation wavelength; and an excitation optical cavity, optically resonant at the excitation wavelength, and arranged such that it receives the excitation beam; a second light source for emitting a measurement beam at a measurement wavelength; and a mechanical element mounted such that it can move about an elastic recovery position and/or such that it is elastically deformable, located both on the optical path of the excitation beam in the excitation optical cavity and on the optical path of the measurement beam, and capable of being displaced and/or deformed by the excitation beam. One of either the excitation beam or the measurement beam is capable of causing the movable and/or deformable mechanical element to oscillate. The measuring device can in particular be used as a gas sensor or as a mass spectrometer.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: November 24, 2020
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Laurent Duraffourg, Jean-Marc Fedeli, Serge Gidon, Pierre Labeye
  • Publication number: 20200141805
    Abstract: A measuring device includes a first light source for emitting an excitation beam at an excitation wavelength; and an excitation optical cavity, optically resonant at the excitation wavelength, and arranged such that it receives the excitation beam; a second light source for emitting a measurement beam at a measurement wavelength; and a mechanical element mounted such that it can move about an elastic recovery position and/or such that it is elastically deformable, located both on the optical path of the excitation beam in the excitation optical cavity and on the optical path of the measurement beam, and capable of being displaced and/or deformed by the excitation beam. One of either the excitation beam or the measurement beam is capable of causing the movable and/or deformable mechanical element to oscillate. The measuring device can in particular be used as a gas sensor or as a mass spectrometer.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 7, 2020
    Applicant: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Laurent DURAFFOURG, Jean-Marc Fedeli, Serge Gidon, Pierre Labeye
  • Patent number: 10564092
    Abstract: The invention is an electromechanical resonator, comprising a fixed portion and an oscillator oscillating at a resonant frequency and comprising a fluidic channel. The channel defines a fluidic circuit, can receive a fluid, and can be deformed at the resonant frequency. The resonator includes a waveguide, defining a photonic circuit, guiding a light wave between an input and an output of the waveguide and being able to be deformed at the resonant frequency. The waveguide input can be connected to a light source and the waveguide output can be connected to a photodetector able to form a signal representative of the light wave propagated by the waveguide towards the photodetector, the light wave being modulated at a frequency dependent on the resonant frequency. A variation in a mass of the fluid, inducing a variation in the resonant frequency, may be detected via the signal formed by the photodetector.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: February 18, 2020
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Leopold Virot, Vincent Agache, Jean-Marc Fedeli, Sebastien Hentz
  • Publication number: 20200049617
    Abstract: A particle detector is provided, including at least one channel configured to receive at least one fluid including particles; one optical inlet configured to receive at least one incident luminous radiation; one first plurality of reflecting surfaces arranged between the optical inlet and the channel; one matrix of photo detectors arranged facing the channel; and one second plurality of reflecting surfaces arranged between the channel and the matrix of photo detectors such that the channel is disposed between the first and the second pluralities of reflecting surfaces.
    Type: Application
    Filed: February 20, 2018
    Publication date: February 13, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Salim BOUTAMI, Mathieu DUPOY, Jean-Marc FEDELI
  • Publication number: 20190177836
    Abstract: A method for producing a waveguide including a germanium-based core and a cladding is provided, the method including a step of “low temperature” depositing of a shell after forming the core by engraving, such that the deposition temperature is less than 780° C., followed by a step of “high temperature” depositing of a thick encapsulation layer. The shell and the encapsulation layer at least partially form the cladding of the waveguide. Optionally, a step of annealing under hydrogen at a “low temperature”, less than 750° C., precedes the deposition of the shell. These “low temperature” annealing and depositing steps advantageously make it possible to avoid a post-engraving alteration of the free surfaces of the core during the forming of the cladding which is less germanium-rich.
    Type: Application
    Filed: December 7, 2018
    Publication date: June 13, 2019
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Jean-Michel Hartmann, Mickael Brun, Jean-Marc Fedeli, Maryse Fournier
  • Publication number: 20190101488
    Abstract: The invention is an electromechanical resonator, comprising a fixed portion (10) and an oscillator (20, 60), the oscillator being able to oscillate at a resonant frequency (f), the oscillator comprising: a fluidic channel (25), defining a fluidic circuit, produced in the oscillator (20, 60), and intended to receive a fluid (4), the fluidic channel being able to be deformed at the resonant frequency, under the effect of the oscillation of the oscillator; the resonator being characterized in that it also includes: a waveguide (26), defining a photonic circuit, produced in the oscillator (20, 60), and intended to guide a light wave (7) between an input (26in) and an output (26out) of the waveguide, the waveguide (26) being able to be deformed at the resonant frequency (f), under the effect of the oscillation of the oscillator; the input (26in) of the waveguide being able to be connected to a light source (6), the output of the waveguide being able to be connected to a photodetector (8), so that the photodet
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Applicant: Commissariat a l'energie atomique et aux energies alternatives
    Inventors: Leopold Virot, Vincent Agache, Jean-Marc Fedeli, Sebastien Hentz
  • Patent number: 9733430
    Abstract: A method of manufacturing an optical waveguide with a vertical slot including the steps of a) providing a substrate successively including an electric insulator layer and a crystalline semiconductor layer, b) forming a trench on the semiconductor layer to expose the electric insulator layer and defining first and second semiconductor areas on either side, step b) being executed so that the first semiconductor area has a lateral edge extending across the entire thickness of the semiconductor layer, c) forming the dielectric layer having the predetermined width across the entire thickness of the lateral edge, the method being remarkable in that the trench formed at step b) is configured so that the second semiconductor area forms a seed layer.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: August 15, 2017
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Jean-Marc Fedeli, Alexis Abraham, Ségoléne Olivier, Yann Bogumilowicz, Thomas Magis, Pierre Brianceau
  • Publication number: 20160041339
    Abstract: A method of manufacturing an optical waveguide with a vertical slot including the steps of a) providing a substrate successively including an electric insulator layer and a crystalline semiconductor layer, b) forming a trench on the semiconductor layer to expose the electric insulator layer and defining first and second semiconductor areas on either side, step b) being executed so that the first semiconductor area has a lateral edge extending across the entire thickness of the semiconductor layer, c) forming the dielectric layer having the predetermined width across the entire thickness of the lateral edge, the method being remarkable in that the trench formed at step b) is configured so that the second semiconductor area forms a seed layer.
    Type: Application
    Filed: August 11, 2015
    Publication date: February 11, 2016
    Inventors: Jean-Marc FEDELI, Alexis ABRAHAM, Ségoléne OLIVIER, Yann BOGUMILOWICZ, Thomas MAGIS, Pierre BRIANCEAU
  • Patent number: 9246045
    Abstract: Fabrication of a photodetector is performed on a substrate comprising a first portion successively provided with a first semiconductor film, an electrically insulating layer, a second semiconductor film, and a protection layer. The substrate also comprises a second portion not comprising the second semiconductor film. It further comprises a third portion not comprising the second semiconductor film and the protection layer. The second semiconductor film is etched in the first portion to form a cavity. A PIN/NIP diode is formed in the third portion at least by means of deposition of a third semiconductor material which also comes and fills the cavity. A conversion layer is deposited to absorb a light signal originating from the second semiconductor film and to convert the light signal into an electric signal, the conversion layer electrically connecting the PIN/NIP diode.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: January 26, 2016
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Jean-Michel Hartmann, Yann Bogumilowicz, Jean-Marc Fedeli
  • Patent number: 9166091
    Abstract: A PIN structure semiconductor optical receiver includes first and second electrical contact layers and an intrinsic layer disposed between them. The intrinsic layer includes a stud having a stud axis and a stud cross-section. The first and second contact layers have dimensions in a plane perpendicular to the stud axis that are greater than the stud's cross-section. These layers are also elongated and have longitudinal axes offset angularly relative to each other to minimize facing areas of said electrical contact layers.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: October 20, 2015
    Assignee: COMMISSARIAT A L'ÉNERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Christophe Kopp, Jean-Marc Fedeli, Sylvie Menezo
  • Patent number: 9077152
    Abstract: The laser device includes an amplifier including a III-V heterostructure arranged to generate photons, and a waveguide which forms a loop and is optically coupled to the amplifier. The amplifier is arranged facing the waveguide only in the region of a first section of the waveguide.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: July 7, 2015
    Assignee: COMMISSARIAT A L′ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Badhise Ben Bakir, Antoine Descos, Jean-Marc Fedeli, Nicolas Olivier
  • Publication number: 20150171259
    Abstract: Fabrication of a photodetector is performed on a substrate comprising a first portion successively provided with a first semiconductor film, an electrically insulating layer, a second semiconductor film, and a protection layer. The substrate also comprises a second portion not comprising the second semiconductor film. It further comprises a third portion not comprising the second semiconductor film and the protection layer. The second semiconductor film is etched in the first portion to form a cavity. A PIN/NIP diode is formed in the third portion at least by means of deposition of a third semiconductor material which also comes and fills the cavity. A conversion layer is deposited to absorb a light signal originating from the second semiconductor film and to convert the light signal into an electric signal, the conversion layer electrically connecting the PIN/NIP diode.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 18, 2015
    Inventors: Jean-Michel HARTMANN, Yann BOGUMILOWICZ, Jean-Marc FEDELI
  • Patent number: 8958670
    Abstract: The device for coupling an electromagnetic wave includes a waveguide and a slit metal guide. The slit metal guide is formed by two metal elements which are coplanar and spaced out from one another so as to form the slit. The slit metal guide is arranged in a plane offset from the plane of the waveguide and partially covers said waveguide, said waveguide and the slit guide being maintained at a distance from one another by a dielectric.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: February 17, 2015
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Cecile Delacour, Badhise Ben Bakir, Jean-Marc Fedeli, Alexei Tchelnokov
  • Patent number: 8761220
    Abstract: The laser includes an amplifier with III-V heterostructure, designed to generate an optical wave, and a waveguide coupled optically to the amplifier, said waveguide having a hat-shaped cross section, the top of which is proximal to the amplifier. The top of the hat and the lateral sides of the hat are covered with a layer of a dielectric material in the vicinity of the amplifier. The hat is formed by a base and a protrusion of the waveguide, the material forming the base being distinct from the material forming the protrusion.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: June 24, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Badhise Ben Bakir, Nicolas Olivier, Jean-Marc Fedeli