Patents by Inventor L. Brandon Shaw

L. Brandon Shaw 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
  • Publication number: 20210313756
    Abstract: Methods for synthesizing fibers having nanoparticles therein are provided, as well as preforms and fibers incorporating nanoparticles. The nanoparticles may include one or more rare earth ions selected based on fluorescence at eye-safer wavelengths, surrounded by a low-phonon energy host. Nanoparticles that are not doped with rare earth ions may also be included as a co-dopant to help increase solubility of nanoparticles doped with rare earth ions in the silica matrix. The nanoparticles may be incorporated into a preform, which is then drawn to form fiber. The fibers may beneficially be incorporated into lasers and amplifiers that operate at eye safer wavelengths. Lasers and amplifiers incorporating the fibers may also beneficially exhibit reduced Stimulated Brillouin Scattering.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 7, 2021
    Inventors: Colin C. Baker, Edward J. Friebele, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera
  • Patent number: 11043785
    Abstract: Methods for synthesizing fibers having nanoparticles therein are provided, as well as preforms and fibers incorporating nanoparticles. The nanoparticles may include one or more rare earth ions selected based on fluorescence at eye-safer wavelengths, surrounded by a low-phonon energy host. Nanoparticles that are not doped with rare earth ions may also be included as a co-dopant to help increase solubility of nanoparticles doped with rare earth ions in the silica matrix. The nanoparticles may be incorporated into a preform, which is then drawn to form fiber. The fibers may beneficially be incorporated into lasers and amplifiers that operate at eye safer wavelengths. Lasers and amplifiers incorporating the fibers may also beneficially exhibit reduced Stimulated Brillouin Scattering.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: June 22, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Colin C. Baker, Edward J. Friebele, Woohong Kim, L. Brandon Shaw, Jasbinder S. Sanghera
  • Patent number: 11035984
    Abstract: The invention relates to methods for fabricating antireflective surface structures (ARSS) on an optical element using a three-dimensional film layer applied to the surface of the optical element. The methods beneficially permit materials that do not exhibit local variation in physical and chemical properties to be provided with ARSS. Optical elements having ARSS on at least one surface are also provided.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: June 15, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jesse A. Frantz, Lynda E. Busse, L. Brandon Shaw, Jasbinder S. Sanghera, Ishwar D. Aggarwal, Menelaos K. Poutous
  • Patent number: 10915004
    Abstract: An optical system has a beam-steering device, a light source, and a controller that controls the light source to actively control wavelength of the incoming light to control the output angle of the outgoing light output from the BS device. The BS device may have incoupler, waveguide, and/or outcoupler electrodes, and the system may have corresponding controllable voltage supplies actively controlled by the controller to selectively modify electric fields applied to the BS device to control corresponding operating characteristics of the BS device (e.g., in-plane and/or out-of-plane output angles of the outgoing light and/or device incoupling angle). An alternative optical system has a BS device, a detector array that generates detector signals corresponding to outgoing light received from the BS device, and a controller that processes the detector signals to determine one or more wavelengths of the outgoing light.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: February 9, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jason D. Myers, Jesse A. Frantz, Christopher M. Spillmann, Robel Y. Bekele, Henry G. Gotjen, Jawad Naciri, Jakub Kolacz, L. Brandon Shaw, Jasbinder S. Sanghera
  • Patent number: 10884188
    Abstract: A method for creating a random anti-reflective surface structure on an optical fiber including a holder configured to hold the optical fiber comprising a groove and a fiber connector, an adhesive material to hold the optical fiber in the holder and fill any gap between the optical fiber and the holder, a glass to cover the adhesive material and the optical fiber, and a reactive ion etch device. The reactive ion etch device comprises a plasma and is configured to expose an end face of the optical fiber to the plasma. The plasma is configured to etch a random anti-reflective surface structure on the end face of the optical fiber.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 5, 2021
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jesse A. Frantz, Lynda E. Busse, Jason D. Myers, L. Brandon Shaw, Jasbinder S. Sanghera, Ishwar D. Aggarwal, Catalin M. Florea
  • 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: 20200325300
    Abstract: This application relates generally to polymer materials comprising nanoscale ceramic particles for use as a coating in clad pump fiber lasers, including those that function at eye-safer wavelengths and the related method of making them. Fluorinated polymers that possess low refractive index, low optical loss, and high thermal stability are combined with fluorinated ceramic nanoparticles that possess low refractive index and high thermal conductivity to develop a polymer material.
    Type: Application
    Filed: April 9, 2020
    Publication date: October 15, 2020
    Inventors: Darryl A. Boyd, Daniel Rhonehouse, Colin C. Baker, L. Brandon Shaw, Woohong Kim, 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
  • Publication number: 20200271862
    Abstract: A method for creating a random anti-reflective surface structure on an optical fiber including a holder configured to hold the optical fiber comprising a groove and a fiber connector, an adhesive material to hold the optical fiber in the holder and fill any gap between the optical fiber and the holder, a glass to cover the adhesive material and the optical fiber, and a reactive ion etch device. The reactive ion etch device comprises a plasma and is configured to expose an end face of the optical fiber to the plasma. The plasma is configured to etch a random anti-reflective surface structure on the end face of the optical fiber.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Inventors: Jesse A. Frantz, Lynda E. Busse, Jason D. Myers, L. Brandon Shaw, Jasbinder S. Sanghera, Ishwar D. Aggarwal, Catalin M. Florea
  • Patent number: 10734943
    Abstract: A system for transmitting power to a remote equipment, the system including a first laser source that generates a first laser beam; a first tracking device operatively connected to the first laser source, wherein the first tracking device controls a direction of the first laser beam; and a first photovoltaic device operatively connected to the remote equipment located remotely from the first laser source and the first tracking device, wherein the first photovoltaic device includes a semiconductor material that generates an electric current in response to absorbing the first laser beam, and wherein a first wavelength of the first laser beam is within an eye-safer range.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: August 4, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jesse A. Frantz, Jason D. Myers, Steven R. Bowman, L. Brandon Shaw, Jasbinder S. Sanghera
  • Publication number: 20200200675
    Abstract: A standoff chemical detection system that includes a source and detector are provided. The source includes: a controller, memory communicatively connected to the controller, optical sources each constructed to operate over different wavelength ranges, and a power supply. The controller controls the plurality of optical sources to emit respective infrared beams towards a target detection area in a sequential order. The detector includes: an image sensor and a controller that is communicatively connected to the image sensor. Memory and the notification device are also communicatively connected to the controller. The image sensor receives attenuated infrared beams emitted by the optical sources sequentially and at least partially attenuated by chemicals in the target detection area. The controller is constructed to calculate stimulus value signals from the recorded image data and determine whether a hazard chemical is located within the target detection area based on the calculated stimulus value signals.
    Type: Application
    Filed: October 30, 2019
    Publication date: June 25, 2020
    Inventors: Kevin Major, Kenneth Ewing, Jasbinder Sanghera, L. Brandon Shaw
  • Patent number: 10663667
    Abstract: A system and method for creating a random anti-reflective surface structure on an optical fiber including a holder configured to hold the optical fiber comprising a groove and a fiber connector, an adhesive material to hold the optical fiber in the holder and fill any gap between the optical fiber and the holder, a glass to cover the adhesive material and the optical fiber, and a reactive ion etch device. The reactive ion etch device comprises a plasma and is configured to expose an end face of the optical fiber to the plasma. The plasma is configured to etch a random anti-reflective surface structure on the end face of the optical fiber.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: May 26, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jesse A. Frantz, Lynda E. Busse, Jason D. Myers, L. Brandon Shaw, Jasbinder S. Sanghera, Ishwar D. Aggarwal, Catalin M. Florea
  • 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: 10444595
    Abstract: An optical system has a beam-steering device having a planar waveguide region between a tapered incoupler and a tapered outcoupler that respectively define opposing incoupler and outcoupler facets of the BS device. Each region has a substrate, a subcladding layer over the substrate, a core layer over the subcladding, and a top cladding layer over the core. Within the incoupler, at least one of the subcladding and the top cladding has a material having a refractive index that varies with an applied field (e.g., an electric field) applied at the incoupler. The optical system also has a field-applying device that applies the applied field at the incoupler, an output detector that generates a feedback signal based on detected outgoing light output from the outcoupler, and a controller that controls the field-applying device based on the feedback signal to alter the light output from the outcoupler.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: October 15, 2019
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jason D. Myers, Jesse A. Frantz, Christopher M. Spillmann, Robel Y. Bekele, Henry G. Gotjen, Jawad Naciri, Jakub Kolacz, L. Brandon Shaw, Jasbinder S. Sanghera