Patents by Inventor Dominique Fourguette
Dominique Fourguette 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).
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Publication number: 20240133915Abstract: Photonic accelerometers and systems containing the same are described herein. In one aspect, a photonic accelerometer includes: a resonator; a waveguide evanescently coupled to the resonator; a cantilever supporting the resonator, the cantilever including: (i) a first end fixed to a base, and (ii) a second, free end; and a proof mass supported by the free end of the cantilever. The resonator can be configured to store resonant photons in a mode at a resonant frequency. The waveguide can be configured to guide photons proximate the resonator to coupled resonant photons into the mode. The proof mass can be configured to deflect the cantilever based on motion of the base, where deflections of the cantilever cause shifts of the resonant frequency.Type: ApplicationFiled: October 19, 2023Publication date: April 25, 2024Inventors: Jaime da Silva, Dominique Fourguette, Volkan Otugen, Bruce Gnade
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Patent number: 11656241Abstract: An optical motion sensor includes a substrate, a whispering-gallery-mode-based optical resonator disposed on the substrate, a mass-spring-damper system disposed on the substrate proximate to a first side of the whispering-gallery-mode-based optical resonator, and a waveguide or optical fiber. The whispering-gallery-mode-based optical resonator has a substantially circular cross-section. A gap separates an end of the mass-spring-damper system from the whispering-gallery-mode-based optical resonator. The waveguide or optical fiber abuts a second side of the whispering-gallery-mode-based optical resonator that is substantially opposite to the first side.Type: GrantFiled: February 11, 2021Date of Patent: May 23, 2023Assignees: Southern Methodist University, Michigan Aerospace CorporationInventors: Volkan Otugen, Bruce Gnade, Dominique Fourguette
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Patent number: 11415700Abstract: A number of etalons together are used to extract the velocity, density and temperature of a scattering medium, such as the atmosphere. An optical air data sensor system incorporates the structure and operation for outputting laser light at a volume of air so as to be scattered by molecules and aerosols in the air volume being scanned; receiving the scattered laser light via a collecting optics assembly; splitting the received scattered laser light from the input optical fiber into a plurality of scattered light emissions; collimating each of the plurality of scattered light emissions; inputting the plurality of collimated light emissions into corresponding ones of a plurality of Fabry-Perot etalons; and imaging each of the plurality of collimated light emissions from the plurality of Fabry-Perot onto corresponding ones of a plurality of non-imaging detectors.Type: GrantFiled: February 9, 2017Date of Patent: August 16, 2022Assignee: MICHIGAN AEROSPACE CORPORATIONInventors: Dominique Fourguette, David Zuk
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Publication number: 20210255213Abstract: An optical motion sensor includes a substrate, a whispering-gallery-mode-based optical resonator disposed on the substrate, a mass-spring-damper system disposed on the substrate proximate to a first side of the whispering-gallery-mode-based optical resonator, and a waveguide or optical fiber. The whispering-gallery-mode-based optical resonator has a substantially circular cross-section. A gap separates an end of the mass-spring-damper system from the whispering-gallery-mode-based optical resonator. The waveguide or optical fiber abuts a second side of the whispering-gallery-mode-based optical resonator that is substantially opposite to the first side.Type: ApplicationFiled: February 11, 2021Publication date: August 19, 2021Inventors: Volkan Otugen, Bruce Gnade, Dominique Fourguette
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Patent number: 10591312Abstract: A system for obtaining air data for a vehicle comprises a laser device that emits laser light pulses, and transmit optics that transmits the light pulses into an external air volume adjacent to the vehicle. The system also includes receive optics that collects scattered portions of the light pulses from the external air volume, and a whispering gallery mode (WGM) frequency discriminator that receives the scattered portions of the light pulses from the receive optics. The WGM frequency discriminator includes at least one WGM resonator that outputs a selected portion of the light pulses at one or more optical signal frequencies via tuning the WGM resonator other than by an electro-optic effect. An optical detector samples the selected portion of the light pulses from the WGM frequency discriminator, and converts the sampled light pulses to scalar values. A processing unit receives and records the scalar values from the optical detector.Type: GrantFiled: August 3, 2017Date of Patent: March 17, 2020Assignee: Honeywell International Inc.Inventors: Matthew Wiebold, Grant Lodden, Dominique Fourguette, Xiao Zhu Fan, David Johnson, Jane Pavlich, David Zuk
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Publication number: 20190369259Abstract: A number of etalons together are used to extract the velocity, density and temperature of a scattering medium, such as the atmosphere. An optical air data sensor system incorporates the structure and operation for outputting laser light at a volume of air so as to be scattered by molecules and aerosols in the air volume being scanned; receiving the scattered laser light via a collecting optics assembly; splitting the received scattered laser light from the input optical fiber into a plurality of scattered light emissions; collimating each of the plurality of scattered light emissions; inputting the plurality of collimated light emissions into corresponding ones of a plurality of Fabry-Perot etalons; and imaging each of the plurality of collimated light emissions from the plurality of Fabry-Perot onto corresponding ones of a plurality of non-imaging detectors.Type: ApplicationFiled: February 9, 2017Publication date: December 5, 2019Inventors: Dominique FOURGUETTE, David ZUK
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Publication number: 20180224299Abstract: A system for obtaining air data for a vehicle comprises a laser device that emits laser light pulses, and transmit optics that transmits the light pulses into an external air volume adjacent to the vehicle. The system also includes receive optics that collects scattered portions of the light pulses from the external air volume, and a whispering gallery mode (WGM) frequency discriminator that receives the scattered portions of the light pulses from the receive optics. The WGM frequency discriminator includes at least one WGM resonator that outputs a selected portion of the light pulses at one or more optical signal frequencies via tuning the WGM resonator other than by an electro-optic effect. An optical detector samples the selected portion of the light pulses from the WGM frequency discriminator, and converts the sampled light pulses to scalar values. A processing unit receives and records the scalar values from the optical detector.Type: ApplicationFiled: August 3, 2017Publication date: August 9, 2018Inventors: Matthew Wiebold, Grant Lodden, Dominique Fourguette, Xiao Zhu Fan, David Johnson, Jane Pavlich, David Zuk
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Patent number: 6956230Abstract: Integrated sensors are described using lasers on substrates. In one embodiment, a first sensor forms a laser beam and uses a quartz substrate to sense particle motion by interference of the particles with a diffraction beam caused by a laser beam. A second sensor uses gradings to produce an interference. In another embodiment, an integrated sensor includes a laser element, producing a diverging beam, and a single substrate which includes a first diffractive optical element placed to receive the diverging beam and produce a fringe based thereon, a scattering element which scatters said fringe beam based on particles being detected, and a second diffractive element receiving scattered light.Type: GrantFiled: September 15, 2000Date of Patent: October 18, 2005Assignee: California Institute of TechnologyInventors: Morteza Gharib, Dominique Fourguette, Darius Modarress, Frederic Taugwalder, Siamak Forouhar
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Patent number: 6717172Abstract: A diffractive optic sheer stress sensor operates by forming diverging fringes over a linear area of measurement. A diode laser focuses light onto a diffractive lens which focuses the light to respective slits. The slits form diverging fringes, and scattered light from the fringes is collected by a window and focused by another diffractive lens to a receiver.Type: GrantFiled: December 18, 2001Date of Patent: April 6, 2004Assignee: California Institute of TechnologyInventors: Morteza Gharib, Daniel W. Wilson, Siamak Forouhar, Richard E. Muller, Dominique Fourguette, Darius Modarress, Frederic Taugwalder
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Patent number: 6580503Abstract: An optical particle detection system produces an optical beam which is scattered by particles in a probe volume area. The particles may scatter the beam to the detector. The optical beam is a hollow shaped beam which may be circular/doughnut shaped, or made be of any other hollow shape. The particle passes across the beam, and those particles which pass through the center of the beam are detected as being desired particles to detect. This system may be used to detect particle concentration, and size. In addition, by producing an asymmetric beam, particle direction can also be detected.Type: GrantFiled: December 4, 2001Date of Patent: June 17, 2003Assignee: California Institute of TechnologyInventors: Morteza Gharib, Dominique Fourguette, Frederic Taugwalder, Daniel W. Wilson, Darius Modarress
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Publication number: 20020162956Abstract: A diffractive optic sheer stress sensor operates by forming diverging fringes over a linear area of measurement. A diode laser focuses light onto a diffractive lens which focuses the light to respective slits. The slits form diverging fringes, and scattered light from the fringes is collected by a window and focused by another diffractive lens to a receiver.Type: ApplicationFiled: December 18, 2001Publication date: November 7, 2002Inventors: Morteza Gharib, Daniel W. Wilson, Siamak Forouhar, Richard E. Muller, Dominique Fourguette, Darius Modarress, Frederic Taugwalder
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Publication number: 20020113963Abstract: An optical particle detection system produces an optical beam which is scattered by particles in a probe volume area. The particles may scatter the beam to the detector. The optical beam is a hollow shaped beam which may be circular/doughnut shaped, or made be of any other hollow shape. The particle passes across the beam, and those particles which pass through the center of the beam are detected as being desired particles to detect. This system may be used to detect particle concentration, and size. In addition, by producing an asymmetric beam, particle direction can also be detected.Type: ApplicationFiled: December 4, 2001Publication date: August 22, 2002Inventors: Morteza Gharib, Dominique Fourguette, Frederic Taugwalder, Daniel W. Wilson, Darius Modarress