Patents by Inventor Rafael R. Gattass

Rafael R. Gattass 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).

  • Patent number: 11329446
    Abstract: An apparatus includes an amplified spontaneous emission source, which in turn includes an optical fiber. The optical fiber includes a solid core and a first end. The solid core includes a silica matrix. The silica matrix includes a rare-earth element and a glass co-dopant. The rare-earth element includes dysprosium or neodymium. The glass co-dopant includes Al2O3. The apparatus further includes a laser pump diode coupled to the first end of the optical fiber. The laser pump diode and the optical fiber cooperate to generate a spontaneous spectral emission confined to the solid core. The spontaneous spectral emission includes a simultaneous plurality of spectral regions.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: May 10, 2022
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Rafael R. Gattass, Colin C. Baker, Augustus Xavier Carlson, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20210376551
    Abstract: An apparatus includes an amplified spontaneous emission source, which in turn includes an optical fiber. The optical fiber includes a solid core and a first end. The solid core includes a silica matrix. The silica matrix includes a rare-earth element and a glass co-dopant. The rare-earth element includes dysprosium or neodymium. The glass co-dopant includes Al2O3. The apparatus further includes a laser pump diode coupled to the first end of the optical fiber. The laser pump diode and the optical fiber cooperate to generate a spontaneous spectral emission confined to the solid core. The spontaneous spectral emission includes a simultaneous plurality of spectral regions.
    Type: Application
    Filed: August 19, 2020
    Publication date: December 2, 2021
    Inventors: Rafael R. Gattass, Colin C. Baker, Augustus Xavier Carlson, L. Brandon Shaw, Jasbinder S. Sanghera
  • Patent number: 10822262
    Abstract: An optical fiber with multiple openings made from the steps comprising fabricating an extrusion die using at least one additive manufacturing technique such that the extrusion die has a first set of plurality of channels that combine inside the die into a second set of plurality of channels with a different set of shapes and sizes, extruding a glass through the extrusion die, forming a fiber optic preform having a plurality of longitudinal openings that run the entire length of the fiber optic preform, attaching a barrier layer to the fiber optic preform to form a series of channels to which pressure can be applied by a gas, wherein each channel has a pressure that is independently controlled, and stretching the fiber optic preform at an elevated temperature into an optical fiber with multiple openings.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: November 3, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel J. Gibson, Rafael R. Gattass, Daniel L. Rhonehouse, Shyam S. Bayya, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20200317557
    Abstract: This application relates generally to an optical fiber for the delivery of infrared light where the polarization state of the light entering the fiber is preserved upon exiting the fiber and the related methods for making thereof. The optical fiber has a wavelength between about 0.9 ?m and 15 ?m, comprises at least one infrared-transmitting glass, and has a polarization-maintaining (PM) transverse cross-sectional structure. The infrared-transmitting, polarization-maintaining (IR-PM) optical fiber has a birefringence greater than 10?5 and has applications in dual-use technologies including laser power delivery, sensing and imaging.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 8, 2020
    Inventors: Daniel J. Gibson, Daniel Rhonehouse, Shyam S. Bayya, L. Brandon Shaw, Rafael R. Gattass, Jesse A. Frantz, Jason D. Myers, Woohong Kim, Jasbinder S. Sanghera
  • Patent number: 10649142
    Abstract: Systems and methods are disclosed for splicing crystal fibers to silica glass fibers. Embodiments of the present disclosure provide mechanically stable bonds with negligible optical transmission loss by splicing fibers through a thermally enhanced reaction bonding process at lower temperatures than the melting point of the crystal. In an embodiment, mixing of the materials at elevated temperatures forms a stable intermediary material which enhances strength and reduces the transmission losses.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: May 12, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Rajesh Thapa, Rafael R. Gattass, Daniel J. Gibson, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20200059060
    Abstract: Fiber optic amplification includes a photonic crystal fiber coupled to a pump laser through a first coupler. The pump laser emits a first electromagnetic radiation wave into the photonic crystal fiber at a first oscillation frequency and a second electromagnetic radiation wave into the photonic crystal fiber at a second oscillation frequency equaling the first oscillation frequency. The first and second electromagnetic radiation waves interact to generate a signal comprising an electromagnetic radiation wave at a third oscillation frequency and an idler comprising a fourth electromagnetic radiation wave at a fourth oscillation frequency to be generated and amplified through parametric amplification. Parametric amplification is achieved by four wave mixing. The photonic crystal fiber emits a parametric output signal based on the four wave mixing. A nonlinear crystal frequency doubles the parametric output signal through second-harmonic generation.
    Type: Application
    Filed: August 20, 2019
    Publication date: February 20, 2020
    Inventors: L. Brandon Shaw, Rafael R. Gattass, Rajesh Thapa, Lynda E. Busse, Ishwar D. Aggarwal, Daniel L. Rhonehouse, Jasbinder S. Sanghera, Jason Auxier
  • Publication number: 20190389776
    Abstract: Disclosed is a method of flash sintering a sample composed of ceramic particles by providing laser energy to change the electrical properties of the ceramic material. The processes and systems disclosed herein do not require large heating equipment like a furnace allowing for a portable system of repairing ceramic materials in the field.
    Type: Application
    Filed: June 21, 2019
    Publication date: December 26, 2019
    Inventors: Guillermo R. Villalobos, Rafael R. Gattass, Michael Hunt, Shyam S. Bayya, Bryan Sadowski, Robert Miklos, Frederic H. Kung, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera, Antti Makinen
  • Publication number: 20190382298
    Abstract: An optical fiber with multiple openings made from the steps comprising fabricating an extrusion die using at least one additive manufacturing technique such that the extrusion die has a first set of plurality of channels that combine inside the die into a second set of plurality of channels with a different set of shapes and sizes, extruding a glass through the extrusion die, forming a fiber optic preform having a plurality of longitudinal openings that run the entire length of the fiber optic preform, attaching a barrier layer to the fiber optic preform to form a series of channels to which pressure can be applied by a gas, wherein each channel has a pressure that is independently controlled, and stretching the fiber optic preform at an elevated temperature into an optical fiber with multiple openings.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 19, 2019
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel J. Gibson, Rafael R. Gattass, Daniel L. Rhonehouse, Shyam S. Bayya, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20190324209
    Abstract: Systems and methods are disclosed for splicing crystal fibers to silica glass fibers. Embodiments of the present disclosure provide mechanically stable bonds with negligible optical transmission loss by splicing fibers through a thermally enhanced reaction bonding process at lower temperatures than the melting point of the crystal. In an embodiment, mixing of the materials at elevated temperatures forms a stable intermediary material which enhances strength and reduces the transmission losses.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 24, 2019
    Inventors: Rajesh Thapa, Rafael R. Gattass, Daniel J. Gibson, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera
  • Patent number: 10394102
    Abstract: A device for the generation of supercontinuum in infrared fiber with a compact light source comprising a microchip laser is launched directly into an infrared fiber without a nonlinear element. Light from the laser is beyond the two-photon absorption of the infrared fiber. The broadband output has a bandwidth greater than the input laser bandwidth by at least 100% and an emission wavelength range from 2 to 14 micrometers.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: August 27, 2019
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Rafael R. Gattass, Jasbinder S. Sanghera, L. Brandon Shaw
  • Patent number: 10370280
    Abstract: A method of making an optical fiber with multiple openings comprising the steps of fabricating an extrusion die using additive manufacturing such that the extrusion die has a plurality of channels that combine inside the die into another set of channels, extruding a glass, forming a fiber optic preform having a plurality of longitudinal openings that run the entire length, attaching a barrier layer for pressure application, and stretching the preform into an optical fiber with multiple openings. An extrusion die comprising an additive manufactured material, having a proximal side having openings and having a distal side having openings, wherein the openings of the proximal side are of feed channels, wherein the openings of the distal side are of forming channels, and wherein in side the body of the die, two of the feed channels combine the forming channels.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: August 6, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel J. Gibson, Rafael R. Gattass, Daniel L. Rhonehouse, Shyam S. Bayya, L. Brandon Shaw, Jasbinder S. Sanghera
  • Patent number: 10359574
    Abstract: Systems and methods are provided for mechanically encapsulating an infrared transmitting optical fiber, removing any power coupled to the cladding of the infrared optical fiber, and bridging the thermal properties between the optical fiber and the mechanical ferrule used. Embodiments of the present disclosure have several advantages over prior systems. For example, in an embodiment, the transmitting ferrule does not require epoxy to mount the fiber to the ferrule, isolates the front face of the fiber, and allows for high power to be incident on the connector without damage by reducing the thermal induced stress and managing any stray light coupled to the core.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: July 23, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Rafael R. Gattass, Leslie Brandon Shaw, Jasbinder S. Sanghera, Shyam S. Bayya, Daniel L. Rhonehouse
  • Patent number: 10338315
    Abstract: Systems and methods are disclosed for splicing crystal fibers to silica glass fibers. Embodiments of the present disclosure provide mechanically stable bonds with negligible optical transmission loss by splicing fibers through a thermally enhanced reaction bonding process at lower temperatures than the melting point of the crystal. In an embodiment, mixing of the materials at elevated temperatures forms a stable intermediary material which enhances strength and reduces the transmission losses.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: July 2, 2019
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Rajesh Thapa, Rafael R. Gattass, Daniel J. Gibson, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20190094654
    Abstract: A device for the generation of supercontinuum in infrared fiber with a compact light source comprising a microchip laser is launched directly into an infrared fiber without a nonlinear element. Light from the laser is beyond the two-photon absorption of the infrared fiber. The broadband output has a bandwidth greater than the input laser bandwidth by at least 100% and an emission wavelength range from 2 to 14 micrometers.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 28, 2019
    Inventors: Rafael R. Gattass, Jasbinder S. Sanghera, L. Brandon Shaw
  • Publication number: 20180356599
    Abstract: Systems and methods are provided for mechanically encapsulating an infrared transmitting optical fiber, removing any power coupled to the cladding of the infrared optical fiber, and bridging the thermal properties between the optical fiber and the mechanical ferrule used. Embodiments of the present disclosure have several advantages over prior systems. For example, in an embodiment, the transmitting ferrule does not require epoxy to mount the fiber to the ferrule, isolates the front face of the fiber, and allows for high power to be incident on the connector without damage by reducing the thermal induced stress and managing any stray light coupled to the core.
    Type: Application
    Filed: June 5, 2018
    Publication date: December 13, 2018
    Inventors: Rafael R. Gattass, Leslie Brandon Shaw, Jasbinder S. Sanghera, Shyam S. Bayya, Daniel L. Rhonehouse
  • Patent number: 10126630
    Abstract: A device for the generation of supercontinuum in infrared fiber with a light source comprising a pulsed microchip laser operating at a wavelength greater than one micrometer, a nonlinear optical parametric element operated without a cavity, and an infrared fiber. Light from the laser is pumped into the nonlinear optical parametric element to generate two new wavelengths, and the output from the nonlinear optical parametric element is launched into the infrared fiber. Output from the infrared fiber has a bandwidth greater than the input laser bandwidth by at least 100% and an emission wavelength range from 2 to 14 micrometers.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: November 13, 2018
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Rafael R. Gattass, Jasbinder S. Sanghera, L. Brandon Shaw
  • Publication number: 20180106968
    Abstract: Systems and methods are disclosed for splicing crystal fibers to silica glass fibers. Embodiments of the present disclosure provide mechanically stable bonds with negligible optical transmission loss by splicing fibers through a thermally enhanced reaction bonding process at lower temperatures than the melting point of the crystal. In an embodiment, mixing of the materials at elevated temperatures forms a stable intermediary material which enhances strength and reduces the transmission losses.
    Type: Application
    Filed: October 16, 2017
    Publication date: April 19, 2018
    Inventors: Rajesh Thapa, Rafael R. Gattass, Daniel J. Gibson, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20180093912
    Abstract: A method of making an optical fiber with multiple openings comprising the steps of fabricating an extrusion die using additive manufacturing such that the extrusion die has a plurality of channels that combine inside the die into another set of channels, extruding a glass, forming a fiber optic preform having a plurality of longitudinal openings that run the entire length, attaching a barrier layer for pressure application, and stretching the preform into an optical fiber with multiple openings. An extrusion die comprising an additive manufactured material, having a proximal side having openings and having a distal side having openings, wherein the openings of the proximal side are of feed channels, wherein the openings of the distal side are of forming channels, and wherein in side the body of the die, two of the feed channels combine the forming channels.
    Type: Application
    Filed: October 2, 2017
    Publication date: April 5, 2018
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Daniel J. Gibson, Rafael R. Gattass, Daniel L. Rhonehouse, Shyam S. Bayya, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20170371229
    Abstract: A device for the generation of supercontinuum in infrared fiber with a pump light comprising a microchip laser operating with a wavelength of 1.0 ?m or greater that can be wavelength shifted though a nonlinear element to a wavelength beyond the two-photon absorption of the infrared fiber and launched into infrared fiber whereby the spectrum is broadened in the infrared fiber through various nonlinear processes to generate a supercontinuum within the mid-IR from 2 to 14 ?m.
    Type: Application
    Filed: September 8, 2017
    Publication date: December 28, 2017
    Inventors: Rafael R. Gattass, Jasbinder S. Sanghera, L. Brandon Shaw
  • Patent number: 9785033
    Abstract: A device for the generation of supercontinuum in infrared fiber with a pump light comprising a microchip laser operating with a wavelength of 1.0 ?m or greater that can be wavelength shifted though a nonlinear element to a wavelength beyond the two-photon absorption of the infrared fiber and launched into infrared fiber whereby the spectrum is broadened in the infrared fiber through various nonlinear processes to generate a supercontinuum within the mid-IR from 2 to 14 ?m.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 10, 2017
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Rafael R. Gattass, Jasbinder S. Sanghera, L. Brandon Shaw