Patents by Inventor Ayman F. Abouraddy

Ayman F. Abouraddy 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: 20190064629
    Abstract: The present disclosure is directed to systems and methods for omniresonant broadband coherent perfect absorption of incoherent light over large bandwidths. The apparatus and methods that enable 100% effective optical absorption in a structure, irrespective of the material from which it is constructed, over a large, continuous bandwidth (omniresonance) in ultrathin devices. Specifically, we demonstrate achromatic optical absorption (omniresonance) in a planar Fabry-PĂ©rot micro-cavity via angularly multiplexed phase-matching. By assigning each wavelength to an appropriate angle of incidence, the micro-cavity is rendered absorbing with continuous spectral range. For example, the linewidth of a single-order 0.7 nm wide resonance is de-slanted in spectral-angular space to become a 70 nm wide achromatic resonance spanning multiple cavity free spectral ranges. The embodied invention can have important applications in, e.g.
    Type: Application
    Filed: August 31, 2018
    Publication date: February 28, 2019
    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Ali Kazemi Jahromi, Massimo L. Villinger, Ahmed El Halawany, Soroush Shabahang, Hasan Esat Kondakci
  • Patent number: 10118853
    Abstract: In one embodiment, a chalcogenide glass optical fiber is produced by forming a billet including a chalcogenide glass mass and a polymer mass in a stacked configuration, heating the billet to a temperature below the melting point of the chalcogenide glass, extruding the billet in the ambient environment to form a preform rod having a chalcogenide glass core and a polymer jacket, and drawing the preform rod.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: November 6, 2018
    Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Guangming Tao, Soroush Shabahang
  • Patent number: 10001616
    Abstract: An underwater fiber optic cable includes an optical fiber, and a jacket surrounding the optical fiber. The jacket includes a polymer having a first density, and particles distributed throughout the polymer having a second density greater than the first density. The particles have a predetermined volume fraction to thereby provide the underwater cable with a predetermined buoyancy when underwater.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: June 19, 2018
    Assignees: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC., HARRIS CORPORATION
    Inventors: Ayman F. Abouraddy, Felix A. Tan, Donna M. Kocak
  • Patent number: 9740031
    Abstract: A thin film photonic structure that enables segregation of the effective absorption of the thin film and its intrinsic absorption while substantially eliminating bandwidth restrictions. In the form of an optical resonator, the structure includes two, multi-layer, aperiodic dielectric mirrors and a lossy, dielectric thin film and characterized by an intrinsic optical absorption over at least a one octave bandwidth. The two, multi-layer, aperiodic dielectric mirrors are characterized by a reflectivity amplitude that increases in-step with increasing wavelength over the at least one octave bandwidth. Upon a single incoherent beam of optical radiation having a spectrum over the at least one octave bandwidth incident on one side of the resonator structure, the lossy, dielectric thin film is characterized by an effective optical absorption over the at least one octave bandwidth that is greater than the intrinsic optical absorption over the at least one octave bandwidth.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: August 22, 2017
    Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Lorelle N. Pye, Massimo Maximilian L. Villinger, Soroush Shabahang, Walker D. Larson, Lane Martin
  • Publication number: 20170139238
    Abstract: A thin film photonic structure that enables segregation of the effective absorption of the thin film and its intrinsic absorption while substantially eliminating bandwidth restrictions. In the form of an optical resonator, the structure includes two, multi-layer, aperiodic dielectric mirrors and a lossy, dielectric thin film and characterized by an intrinsic optical absorption over at least a one octave bandwidth. The two, multi-layer, aperiodic dielectric mirrors are characterized by a reflectivity amplitude that increases in-step with increasing wavelength over the at least one octave bandwidth. Upon a single incoherent beam of optical radiation having a spectrum over the at least one octave bandwidth incident on one side of the resonator structure, the lossy, dielectric thin film is characterized by an effective optical absorption over the at least one octave bandwidth that is greater than the intrinsic optical absorption over the at least one octave bandwidth.
    Type: Application
    Filed: March 14, 2016
    Publication date: May 18, 2017
    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Lorelle N. Pye, Massimo Maximilian L. Villinger, Soroush Shabahang, Walker D. Larson, Lane Martin
  • Patent number: 9512036
    Abstract: A fiber is provided, including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are disposed as a sequence along a longitudinal line parallel to the longitudinal fiber axis in at least a portion of the fiber length, and include a spherical particle material that is interior to the fiber cladding material and different than the fiber cladding material. To produce particles, a drawn fiber, having a longitudinal-axis fiber length and including at least one fiber core that has a longitudinal core axis parallel to the longitudinal fiber axis and that is internally disposed to at least one outer fiber cladding layer along the fiber length, is heated for a time that is sufficient to cause a fiber core to break-up into droplets sequentially disposed along the fiber core axis. Fiber cooling solidifies droplets into spherical particles interior to fiber cladding.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: December 6, 2016
    Assignees: Massachusetts Institute of Technology, University of Central Florida Research Foundation, Inc.
    Inventors: Ayman F. Abouraddy, Esmaeil H. Banaei, Daosheng S. Deng, Yoel Fink, Steven G. Johnson, Joshua J. Kaufman, Xiangdong Liang, Soroush Shabahang, Guangming Tao
  • Publication number: 20160340224
    Abstract: There is provided a fiber including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are provided, separated from one another and disposed in a longitudinal line parallel to the longitudinal fiber axis. The particles are in a sequence with controlled periodic spacing between particles along at least a portion of the fiber length. Each spherical particle has a spherical particle material that is embedded within and elementally different than the fiber cladding material.
    Type: Application
    Filed: August 4, 2016
    Publication date: November 24, 2016
    Applicants: Massachusetts Institute of Technology, University of Central Florida Research Foundation, Inc.
    Inventors: Ayman F. Abouraddy, Esmaeil H. Banaei, Daosheng S. Deng, Yoel Fink, Steven G. Johnson, Joshua J. Kaufman, Xiangdong Liang, Soroush Shabahang, Guangming Tao
  • Publication number: 20160326041
    Abstract: In one embodiment, a chalcogenide glass optical fiber is produced by forming a billet including a chalcogenide glass mass and a polymer mass in a stacked configuration, heating the billet to a temperature below the melting point of the chalcogenide glass, extruding the billet in the ambient environment to form a preform rod having a chalcogenide glass core and a polymer jacket, and drawing the preform rod.
    Type: Application
    Filed: June 9, 2016
    Publication date: November 10, 2016
    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Guangming Tao, Soroush Shabahang
  • Patent number: 9488775
    Abstract: In one embodiment, a chalcogenide glass optical fiber is produced by forming a billet including a chalcogenide glass mass and a polymer mass in a stacked configuration, heating the billet to a temperature below the melting point of the chalcogenide glass, extruding the billet in the ambient environment to form a preform rod having a chalcogenide glass core and a polymer jacket, and drawing the preform rod.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: November 8, 2016
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Ayman F. Abouraddy, Guangming Tao, Soroush Shabahang
  • Publication number: 20160187578
    Abstract: In a fiber there is provided a fiber matrix material having a fiber length. A circumferential array of in-fiber filaments extend the fiber length. Each filament in the array is separated from other filaments in the array by the fiber matrix material. The filaments in the array are regularly spaced around a circumference at a radius in a cross section of the fiber.
    Type: Application
    Filed: January 7, 2016
    Publication date: June 30, 2016
    Applicant: Massachusetts Institute of Technology
    Inventors: Daosheng Deng, Nicholas D. Orf, Ayman F. Abouraddy, Yoel Fink
  • Publication number: 20160060166
    Abstract: A fiber is provided, including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are disposed as a sequence along a longitudinal line parallel to the longitudinal fiber axis in at least a portion of the fiber length. Each spherical particle is of a spherical particle material that is interior to and different than the fiber cladding material. The spacing between adjacent spherical particles in the sequence of particles is greater than the spherical particle diameter. Each spherical particle can be provided as a core-shell particle that includes a spherical core that is surrounded by at least one spherical shell. Each spherical particle can be provided with a plurality of azimuthal sections of at least two distinct materials.
    Type: Application
    Filed: June 20, 2013
    Publication date: March 3, 2016
    Applicants: Massachusetts Institute of Technology, University of Central Florida Research Foundation, Inc.
    Inventors: Ayman F. Abouraddy, Esmaeil H. Banaei, Daosheng S. Deng, Yoel Fink, Steven G. Johnson, Joshua J. Kaufman, Xiangdong Liang, Soroush Shabahang, Guangming Tao
  • Patent number: 9263614
    Abstract: In a fiber there is provided a fiber matrix material having a fiber length; and an array of isolated in-fiber filaments that extend the fiber length. The in-fiber filaments are disposed at a radius in a cross section of the fiber that is a location of a continuous filament material layer in a drawing preform of the fiber. As a result, there is provided a fiber matrix material having a fiber length; and a plurality of isolated fiber elements that are disposed in the fiber matrix, extending the fiber length, where the plurality is of a number greater than a number of isolated domains in a drawing preform of the fiber.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: February 16, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: Daosheng Deng, Nicholas D. Orf, Ayman F. Abouraddy, Yoel Fink
  • Publication number: 20150117828
    Abstract: In one embodiment, a chalcogenide glass optical fiber is produced by forming a billet including a chalcogenide glass mass and a polymer mass in a stacked configuration, heating the billet to a temperature below the melting point of the chalcogenide glass, extruding the billet in the ambient environment to form a preform rod having a chalcogenide glass core and a polymer jacket, and drawing the preform rod.
    Type: Application
    Filed: May 3, 2013
    Publication date: April 30, 2015
    Inventors: Ayman F. Abouraddy, Guangming Tao, Soroush Shabahang
  • Publication number: 20150044463
    Abstract: A fiber is provided that has been thermally drawn from a fiber preform, having a longitudinal-axis length and including at least one core that has a longitudinal core axis parallel to the longitudinal axis and internally disposed to at least one outer fiber cladding material layer along the fiber length. The fiber is fed through a localized heating site having a heating site temperature, T, that is above a melting temperature of the fiber core, with a feed speed, ?f, that melts a portion of the fiber core at the heating site, causing molten droplets to pinch off of fiber core material, one droplet at a time, with a time period of molten droplet formation set by the fiber feed speed, ?f. The fiber is fed through the localized heating site to move the molten droplets out of the heating site and solidify the molten droplets into solid in-fiber particles.
    Type: Application
    Filed: March 13, 2014
    Publication date: February 12, 2015
    Applicants: University of Central Florida Research Foundation,, Massachusetts Institute of Technology
    Inventors: Yoel Fink, Ayman F. Abouraddy, Silvija Gradecak, Benjamin Jean-Baptiste Grena, Alexander Gumennik, Xiaoting Jia, John D. Joannopoulos, Steven G. Johnson, Guillame R. Lestoquoy, Xiangdong Liang, Paul H. Rekemeyer, Matthew J. Smith, Alexander M. Stolyarov, Lei Wei
  • Patent number: 8098966
    Abstract: There is provided a thermal sensing fiber grid, including a plurality of rows and columns of thermal sensing fibers, each of which includes a semiconducting element that has a fiber length and that is characterized by a bandgap energy corresponding to a selected operational temperature range of the fiber in which there can be produced a change in thermally-excited electronic charge carrier population in the semiconducting element in response to a temperature change in the selected temperature range. There is included at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length, and an insulator along the fiber length. An electronic circuit is provided for and connected to each thermal sensing fiber for producing an indication of thermal sensing fiber grid coordinates of a change in ambient temperature.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: January 17, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Mehmet Bayindir, Fabien Soren, Ayman F. Abouraddy, Ofer Shapira, Jerimy R. Arnold, Yoel Fink, John D Joannopoulos
  • Publication number: 20110097581
    Abstract: In a fiber there is provided a fiber matrix material having a fiber length; and an array of isolated in-fiber filaments that extend the fiber length. The in-fiber filaments are disposed at a radius in a cross section of the fiber that is a location of a continuous filament material layer in a drawing preform of the fiber. As a result, there is provided a fiber matrix material having a fiber length; and a plurality of isolated fiber elements that are disposed in the fiber matrix, extending the fiber length, where the plurality is of a number greater than a number of isolated domains in a drawing preform of the fiber.
    Type: Application
    Filed: October 27, 2010
    Publication date: April 28, 2011
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Daosheng Deng, Nicholas D. Orf, Ayman F. Abouraddy, Yoel Fink
  • Publication number: 20100316088
    Abstract: There is provided a thermal sensing fiber grid, including a plurality of rows and columns of thermal sensing fibers, each of which includes a semiconducting element that has a fiber length and that is characterized by a bandgap energy corresponding to a selected operational temperature range of the fiber in which there can be produced a change in thermally-excited electronic charge carrier population in the semiconducting element in response to a temperature change in the selected temperature range. There is included at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length, and an insulator along the fiber length. An electronic circuit is provided for and connected to each thermal sensing fiber for producing an indication of thermal sensing fiber grid coordinates of a change in ambient temperature.
    Type: Application
    Filed: June 18, 2010
    Publication date: December 16, 2010
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Mehmet Bayindir, Fabien Sorin, Ayman F. Abouraddy, Ofer Shapira, Jerimy R. Arnold, Yoel Fink, John D. Joannopoulos
  • Patent number: 7805029
    Abstract: There is provided a feedback-controlled self-heat-monitoring fiber, including an insulator having a fiber length with at least one metal-semiconductor-metal thermal sensing element along the fiber length and disposed at a position in a cross section of the fiber for sensing changes in fiber temperature. An electronic circuit is connected to the thermal sensing element for indicating changes in fiber temperature. A controller is connected for controlling optical transmission through an optical transmission element, that is disposed along the fiber length, in response to indications of changes in fiber temperature.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: September 28, 2010
    Assignee: Massachusetts Institute of Technology
    Inventors: Mehmet Bayindir, Fabien Sorin, Ayman F. Abouraddy, Ofer Shapira, Jeremy R. Arnold, Yoel Fink, John D Joannopoulos
  • Patent number: 7567740
    Abstract: There is provided a thermal sensing fiber including a semiconducting element having a fiber length and characterized by a bandgap energy corresponding to a selected operational temperature range for the fiber in which there can be produced a change in thermally-excited electronic charge carrier population in the semiconducting element in response to a temperature change in the selected temperature range. At least one pair of conducting electrodes is provided in contact with the semiconducting element along the fiber length, and an insulator is provided along the fiber length.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: July 28, 2009
    Assignee: Massachusetts Institute of Technology
    Inventors: Mehmet Bayindir, Fabien Sorin, Ayman F. Abouraddy, Ofer Shapira, Jerimy R. Arnold, Yoel Fink, John D. Joannopoulos
  • Publication number: 20090169158
    Abstract: There is provided a feedback-controlled self-heat-monitoring fiber, including an insulator having a fiber length with at least one metal-semiconductor-metal thermal sensing element along the fiber length and disposed at a position in a cross section of the fiber for sensing changes in fiber temperature. An electronic circuit is connected to the thermal sensing element for indicating changes in fiber temperature. A controller is connected for controlling optical transmission through an optical transmission element, that is disposed along the fiber length, in response to indications of changes in fiber temperature.
    Type: Application
    Filed: March 5, 2009
    Publication date: July 2, 2009
    Applicant: Massachusettes Institue of Technology
    Inventors: Mehmet Bayindir, Fabien Sorin, Ayman F. Abouraddy, Ofer Shapira, Jerimy R. Arnold, Yoel Fink, John D. Joannopoulos