Patents by Inventor Chiara Meneghini
Chiara Meneghini 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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Patent number: 10162107Abstract: A multicore optical fiber includes a cladding and multiple cores disposed in the cladding. Each core has a light-guiding path and follows a helical trajectory about a fiber axis. The multicore fiber also includes a set of discrete lateral coupling zones, which are longitudinally distributed and azimuthally aligned with respect to the fiber axis. Each lateral coupling zone forms an optical coupling path, which enables at least one of lateral in-coupling and out-coupling of light between a corresponding one of the cores and an exterior of the multicore fiber. An optical probing system for light delivery to and/or light collection from a probed region includes a multicore optical fiber to enable coupling of guided light out of the cores for delivery to the probed region and/or collection of light from the probed region for coupling into one of the cores.Type: GrantFiled: February 16, 2017Date of Patent: December 25, 2018Assignee: INSTITUT NATIONAL D'OPTIQUEInventors: Claude Paré, Patrick Paradis, Chiara Meneghini, Antoine Proulx
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Publication number: 20180231712Abstract: A multicore optical fiber includes a cladding and multiple cores disposed in the cladding. Each core has a light-guiding path and follows a helical trajectory about a fiber axis. The multicore fiber also includes a set of discrete lateral coupling zones, which are longitudinally distributed and azimuthally aligned with respect to the fiber axis. Each lateral coupling zone forms an optical coupling path, which enables at least one of lateral in-coupling and out-coupling of light between a corresponding one of the cores and an exterior of the multicore fiber. An optical probing system for light delivery to and/or light collection from a probed region includes a multicore optical fiber to enable coupling of guided light out of the cores for delivery to the probed region and/or collection of light from the probed region for coupling into one of the cores.Type: ApplicationFiled: February 16, 2017Publication date: August 16, 2018Inventors: Claude PARÉ, Patrick PARADIS, Chiara MENEGHINI, Antoine PROULX
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Patent number: 7883535Abstract: The present invention concerns a device and method for transmitting multiple optically-encoded stimulation signals to multiple stimulation sites, especially cell locations. The device uses a primary optical fiber to transmit specific wavelength components of an encoded light signal to output positions along the fiber where they are coupled out of the primary fiber to stimulation sites via electrodes for electrical stimulation of the sites or optical windows and/or secondary optical fibers for photo-stimulation of sites.Type: GrantFiled: November 9, 2005Date of Patent: February 8, 2011Assignee: Institut National D'OptiqueInventors: Daniel Cantin, Alain Cournoyer, Pierre Galarneau, Chiara Meneghini
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Patent number: 7317849Abstract: An optical fiber sensor for detecting curvature of a body/structure comprises a cladding having an outer periphery. A central core receives and transmits light. The central core has Bragg gratings and is positioned in neutral planes of the cladding. Peripheral cores receive and transmit light. The peripheral cores have Bragg gratings and are peripherally positioned in the cladding with respect to the neutral planes. A connection configuration is provided in the outer periphery of the cladding to attach the optical fiber sensor to a body/structure such that the central core and the peripheral cores are in a predetermined orientation with respect to the body/structure to measure curvature of the body/structure.Type: GrantFiled: June 8, 2006Date of Patent: January 8, 2008Assignee: Institut National D'OptiqueInventors: Chiara Meneghini, Sylvain Thériault, Patrick Paradis
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Publication number: 20070297712Abstract: An optical fiber sensor for detecting curvature of a body/structure comprises a cladding having an outer periphery. A central core receives and transmits light. The central core has Bragg gratings and is positioned in neutral planes of the cladding. Peripheral cores receive and transmit light. The peripheral cores have Bragg gratings and are peripherally positioned in the cladding with respect to the neutral planes. A connection configuration is provided in the outer periphery of the cladding to attach the optical fiber sensor to a body/structure such that the central core and the peripheral cores are in a predetermined orientation with respect to the body/structure to measure curvature of the body/structure.Type: ApplicationFiled: June 8, 2006Publication date: December 27, 2007Inventors: Chiara Meneghini, Sylvain Theriault, Patrick Paradis
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Publication number: 20060129210Abstract: The present invention concerns a device and method for transmitting multiple optically-encoded stimulation signals to multiple stimulation sites, especially cell locations. The device uses a primary optical fiber to transmit specific wavelength components of an encoded light signal to output positions along the fiber where they are coupled out of the primary fiber to stimulation sites via electrodes for electrical stimulation of the sites or optical windows and/or secondary optical fibers for photo-stimulation of sites.Type: ApplicationFiled: November 9, 2005Publication date: June 15, 2006Applicant: Institut National D'OptiqueInventors: Daniel Cantin, Alain Cournoyer, Pierre Galarneau, Chiara Meneghini
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Patent number: 6643066Abstract: A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two opposite longitudinal ends. The phase mask has grating corrugations projecting from its surface and distributed with a periodicity along its length. The periodicity of the phase mask is tuned by reversibly changing its length between the two longitudinal ends, such as by compressing or stretching the mask. In this manner, the interference pattern of a light beam passing through the phase mask is also tuned, which allows to control the characteristics of a wavelength filter photoinduced using this phase mask assembly.Type: GrantFiled: December 13, 2001Date of Patent: November 4, 2003Assignee: Institut National d'OptiqueInventors: Jean-François Couillard, François Trépanier, Chiara Meneghini, Jocelyn Lauzon
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Patent number: 6631024Abstract: The present invention concerns a method for fabricating a patterned, poled dielectric structure, comprising the steps of providing a material, patterning a periodic pattern into a first surface, applying an electrode to the first surface, and applying a voltage to the electrode to create a domain inversion in the material. Preferably, the material is a ferroelectric material, and the electrode is a single, planar, solid electrode. The method proposed herein is simple, reproducible and economical, as compared to prior methods. Patterned, poled dielectric structures are used to generate optical frequency conversion, by creating quasi-phase matching between two optical signals.Type: GrantFiled: March 1, 2001Date of Patent: October 7, 2003Assignee: Institut National d'OptiqueInventors: Carl Paquet, Jocelyn Lauzon, Sylvain Derome, Chiara Meneghini
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Publication number: 20030112516Abstract: A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two opposite longitudinal ends. The phase mask has grating corrugations projecting from its surface and distributed with a periodicity along its length. The periodicity of the phase mask is tuned by reversibly changing its length between the two longitudinal ends, such as by compressing or stretching the mask. In this manner, the interference pattern of a light beam passing through the phase mask is also tuned, which allows to control the characteristics of a wavelength filter photoinduced using this phase mask assembly.Type: ApplicationFiled: December 13, 2001Publication date: June 19, 2003Applicant: Institut National D'OptiqueInventors: Jean-Francois Couillard, Francois Trepanier, Chiara Meneghini, Jocelyn Lauzon
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Publication number: 20020122240Abstract: The present invention concerns a method for fabricating a patterned, poled dielectric structure, comprising the steps of providing a material, patterning a periodic pattern into a first surface, applying an electrode to the first surface, and applying a voltage to the electrode to create a domain inversion in the material. Preferably, the material is a ferroelectric material, and the electrode is a single, planar, solid electrode. The method proposed herein is simple, reproducible and economical, as compared to prior methods. Patterned, poled dielectric structures are used to generate optical frequency conversion, by creating quasi-phase matching between two optical signals.Type: ApplicationFiled: March 1, 2001Publication date: September 5, 2002Applicant: INSTITUT NATIONAL D'OPTIQUEInventors: Carl Paquet, Jocelyn Lauzon, Sylvain Derome, Chiara Meneghini