Patents by Inventor Liam Gleeson

Liam Gleeson 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: 20120051739
    Abstract: A method and apparatus for identifying at least one characteristic of at least one optical link of an optical network. The method comprises modulating a predetermined optical channel with a predetermined frequency component, and transmitting the modulated predetermined optical channel onto an optical waveguide at a predetermined power such that at least one optical data channel co-propagating along the optical waveguide with the modulated predetermined optical channel is modulated with the predetermined frequency component.
    Type: Application
    Filed: January 7, 2009
    Publication date: March 1, 2012
    Inventors: Marc Stephens, Hayden Scott Fews, Liam Gleeson, Michal Dlubek
  • Patent number: 7174097
    Abstract: A method and apparatus for transmitting a plurality of signals having different wavelengths through a length of optical cable which is caused to provide distributed gain by being subjected to Raman pumping at a plurality of pump wavelengths, the power levels of the pump signals being in a set ratio or ratios for providing, preferably, a flat gain profile over the range of wavelengths of the plurality of signals, the set power levels of the pump signals being determined from the measured effects of the pump signals on a probe signal and in relation to the wavelength separations among the probe signal, the pump signals and the plurality of signals having different wavelengths.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: February 6, 2007
    Assignee: Ericsson AB
    Inventors: Steven Alleston, Liam Gleeson, Tim Ellingham, Tony Walsh
  • Publication number: 20050117202
    Abstract: A method and apparatus for transmitting a plurality of signals having different wavelengths through a length of optical cable which is caused to provide distributed gain by being subjected to Raman pumping at a plurality of pump wavelengths, the power levels of the pump signals being in a set ratio or ratios for providing, preferably, a flat gain profile over the range of wavelengths of the plurality of signals, the set power levels of the pump signals being determined from the measured effects of the pump signals on a probe signal and in relation to the wavelength separations among the probe signal, the pump signals and the plurality of signals having different wavelengths.
    Type: Application
    Filed: November 27, 2002
    Publication date: June 2, 2005
    Inventors: Liam Gleeson, Tim Ellingham, Tony Walsh