Patents by Inventor Edward Flood

Edward Flood 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).

  • System and method for measuring optical signal-to-noise ratio
    Patent number: 8666245
    Abstract: The invention provides a system and method for measuring optical signal-to-noise-ratio (OSNR) in an optical communication system. A channel filter is adapted to select one specific optical communication channel from a wavelength-division-multiplexing (WDM) optical communication system, wherein the channel comprises an optical signal carrying digital bit information and noise from associated optical power amplifiers in the system. At least one optical delay interferometer is adapted to measure at least two interferograms of the noisy signal. The invention provides a mechanism for calculating the in-band OSNR from extinctions of the interferograms measured at different optical delays by referring to each other, wherein said optical delays are selected to be substantially less than a bit period of the optical channel.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: March 4, 2014
    Assignee: Provost Fellows and Scholars of the College of the Holy and Undivided Trinity of Queen Elizabeth, Near Dublin
    Inventors: Wei-Hua Guo, Edward Flood, John F. Donegan
  • System and Method for Measuring Optical Signal-to-Noise Ratio
    Publication number: 20120293804
    Abstract: The invention provides a system and method for measuring optical signal-to-noise-ratio (OSNR) in an optical communication system. A channel filter is adapted to select one specific optical communication channel from a wavelength-division-multiplexing (WDM) optical communication system, wherein the channel comprises an optical signal carrying digital bit information and noise from associated optical power amplifiers in the system. At least one optical delay interferometer is adapted to measure at least two interferograms of the noisy signal. The invention provides a mechanism for calculating the in-band OSNR from extinctions of the interferograms measured at different optical delays by referring to each other, wherein said optical delays are selected to be substantially less than a bit period of the optical channel.
    Type: Application
    Filed: October 11, 2010
    Publication date: November 22, 2012
    Applicant: The Provost, Fellows and Scholars of The Holy and Undivided Trinity of Queen Elizabeth, Near Dublin
    Inventors: Wei-Hua Guo, Edward Flood, John F. Donegan