Patents by Inventor Andrew Michael Gillooly

Andrew Michael Gillooly 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).

  • Apparatus for providing optical radiation
    Publication number: 20110216790
    Abstract: In one embodiment, a photo-darkening resistant optical fibre includes a waveguide having a numerical aperture less than 0.15. The waveguide includes a core having a refractive index n1 and a pedestal having a refractive index n2, and wherein the fibre includes a first cladding having a refractive index n3 surrounding the pedestal, wherein n1 is greater than n2, n2 is greater than n3. The core includes silica, a concentration of alumina of between approximately 0.3 to 0.8 mole percent, a concentration of phosphate of substantially 15 mole percent, a concentration of ytterbium substantially in the range 20000 to 45000 ppm. The pedestal can include silica, phosphate and germania. The core can have substantially zero thulium dopant.
    Type: Application
    Filed: May 17, 2011
    Publication date: September 8, 2011
    Inventors: Michael Kevan Durkin, Stephen Roy Norman, Fabio Ghiringhelli, David Neil Payne, Louise Mary Brendan Hickey, Jayanta Kumar Sahu, Mikhail Nickolaos Zervas, Andy Piper, Andrew Michael Gillooly
  • Apparatus for providing optical radiation
    Publication number: 20110206074
    Abstract: In one embodiment, a photo-darkening resistant optical fibre includes a waveguide having a numerical aperture less than 0.15. The waveguide includes a core having a refractive index n1 and a pedestal having a refractive index n2, and wherein the fibre includes a first cladding having a refractive index n3 surrounding the pedestal, wherein n1 is greater than n2, n2 is greater than n3. The core includes silica, a concentration of alumina of between approximately 0.3 to 0.8 mole percent, a concentration of phosphate of substantially 15 mole percent, a concentration of ytterbium substantially in the range 20000 to 45000 ppm. The pedestal can include silica, phosphate and germania. The core can have substantially zero thulium dopant.
    Type: Application
    Filed: April 29, 2011
    Publication date: August 25, 2011
    Inventors: Michael Kevan Durkin, Stephen Roy Norman, Fabio Ghiringhelli, David Neil Payne, Louise Mary Brendan Hickey, Jayanta Kumar Sahu, Mikhail Nickolaos Zervas, Andy Piper, Andrew Michael Gillooly
  • Apparatus for providing optical radiation
    Patent number: 7936796
    Abstract: In one embodiment, a photo-darkening resistant optical fiber includes a waveguide having a numerical aperture less than 0.15. The waveguide includes a core having a refractive index n1 and a pedestal having a refractive index n2, and wherein the fiber includes a first cladding having a refractive index n3 surrounding the pedestal, wherein n1 is greater than n2, n2 is greater than n3. The core includes silica, a concentration of alumina of between approximately 0.3 to 0.8 mole percent, a concentration of phosphate of substantially 15 mole percent, a concentration of ytterbium substantially in the range 20000 to 45000 ppm. The pedestal can include silica, phosphate and germania. The core can have substantially zero thulium dopant.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: May 3, 2011
    Assignee: SPI Lasers UK Ltd
    Inventors: Michael Kevan Durkin, Stephen Roy Norman, Fabio Ghiringhelli, David Neil Payne, Louise Mary Brendan Hickey, Jayanta Kumar Sahu, Mikhail Nickolaos Zervas, Andy Piper, Andrew Michael Gillooly
  • Apparatus for providing optical radiation
    Publication number: 20090016387
    Abstract: In one embodiment, a photo-darkening resistant optical fibre includes a waveguide having a numerical aperture less than 0.15. The waveguide includes a core having a refractive index n1 and a pedestal having a refractive index n2, and wherein the fibre includes a first cladding having a refractive index n3 surrounding the pedestal, wherein n1 is greater than n2, n2 is greater than n3. The core includes silica, a concentration of alumina of between approximately 0.3 to 0.8 mole percent, a concentration of phosphate of substantially 15 mole percent, a concentration of ytterbium substantially in the range 20000 to 45000 ppm. The pedestal can include silica, phosphate and germania. The core can have substantially zero thulium dopant.
    Type: Application
    Filed: May 11, 2007
    Publication date: January 15, 2009
    Inventors: Michael Kevan Durkin, Stephen Roy Norman, Fabio Ghiringhelli, David Neil Payne, Louise Mary Brendan Hickey, Jayanta Kumar Sahu, Mikhail Nickolaos Zervas, Andy Piper, Andrew Michael Gillooly