Patents by Inventor Matthew X. Ma

Matthew X. Ma 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 transmission system with noise loaded idler channels
    Patent number: 6999683
    Abstract: A wavelength division multiplex optical system includes a WDM combiner to provide a source signal, at least one transmitter coupled to an input of the WDM combiner, a broadband noise source, and a filter coupled between the broadband noise source and another input of the WDM combiner. In one embodiment, the filter is an optical notch filter. In an alternative embodiment, the filter includes a WDM demultiplexer coupled through plural filters to provide a plurality of noise signals and a WDM multiplexer coupled through at least one filter of the plural filters to respective noise signals.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: February 14, 2006
    Assignee: Tyco Telecommunications (US) Inc.
    Inventors: Franklin W. Kerfoot, III, Matthew X. Ma, Mark D. Tremblay, Wolfgang Schlosser
  • Optical fiber transmission system with noise loaded idler channels
    Publication number: 20040151502
    Abstract: A wavelength division multiplex optical system includes a WDM combiner to provide a source signal, at least one transmitter coupled to an input of the WDM combiner, a broadband noise source, and a filter coupled between the broadband noise source and another input of the WDM combiner. In one embodiment, the filter is an optical notch filter. In an alternative embodiment, the filter includes a WDM demultiplexer coupled through plural filters to provide a plurality of noise signals and a WDM multiplexer coupled through at least one filter of the plural filters to respective noise signals.
    Type: Application
    Filed: December 30, 2003
    Publication date: August 5, 2004
    Inventors: Franklin W. Kerfoot, Matthew X. Ma, Mark D. Tremblay, Wolfgang Schlosser
  • Optical fiber transmission system with noise loaded idler channels
    Patent number: 6704511
    Abstract: A wavelength division multiplex optical system includes a WDM combiner to provide a source signal, at least one transmitter coupled to an input of the WDM combiner, a broadband noise source, and a filter coupled between the broadband noise source and another input of the WDM combiner. In one embodiment, the filter is an optical notch filter. In an alternative embodiment, the filter includes a WDM demultiplexer coupled through plural filters to provide a plurality of noise signals and a WDM multiplexer coupled through at least one filter of the plural filters to respective noise signals.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: March 9, 2004
    Assignee: Tyco Telecommunications (US) Inc.
    Inventors: Franklin W. Kerfoot, III, Matthew X. Ma, Mark D. Tremblay, Wolfgang Schlosser