Patents by Inventor Charles Phillip Asman

Charles Phillip Asman 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).

  • Optical fiber amplifier and methods of making the same
    Patent number: 8254017
    Abstract: A method is provided for forming an optical fiber amplifier. The method comprises providing a composite preform having a gain material core that includes one or more acoustic velocity varying dopants to provide a longitudinally varying acoustic velocity profile along the gain material core to suppress Stimulated Brillouin Scattering (SBS) effects by raising the SBS threshold and drawing the composite preform to form the optical fiber amplifier.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: August 28, 2012
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Robert R. Rice, Michael G. Wickham, Hiroshi Komine, Peter Livingston, Peter Thielen, Charles Phillip Asman
  • OPTICAL FIBER AMPLIFIER AND METHODS OF MAKING THE SAME
    Publication number: 20100238538
    Abstract: A method is provided for forming an optical fiber amplifier. The method comprises providing a composite preform having a gain material core that includes one or more acoustic velocity varying dopants to provide a longitudinally varying acoustic velocity profile along the gain material core to suppress Stimulated Brillouin Scattering (SBS) effects by raising the SBS threshold and drawing the composite preform to form the optical fiber amplifier.
    Type: Application
    Filed: March 19, 2009
    Publication date: September 23, 2010
    Inventors: Robert R. Rice, Michael G. Wickham, Hiroshi Komine, Peter Livinaston, Peter Thielen, Charles Phillip Asman