Patents by Inventor Ghang-Ho Lee

Ghang-Ho Lee 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).

  • Continuously tunable optical dispersion compensation synthesizers using cascaded etalons
    Patent number: 8213073
    Abstract: Described is a method for designing individual stages of a multiple cascaded etalon TDC device to allow continuous thermo-optic tuning over a desired range without inducing incremental signal distortion due to uncontrolled and unpredictable dispersion of the TDC during tuning. This allows the signal to transmit without encountering periods of incremental distortion or dark spots. The method includes prior knowledge of each etalon stage, after full assembly, for spectral group delay profile as a function of temperature through modeling and/or characterization. Characterization can account for performance variations that are due to allowed manufacturing tolerances.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: July 3, 2012
    Assignee: Oclaro (North America), Inc.
    Inventors: Mark Summa, Peter Gerard Wigley, Aravanan Gurusami, Ghang-Ho Lee, Douglas Lleweilyn Butler, Robert David Paul Ridding, Timothy Kent Zahnley
  • Continuously tunable optical dispersion compensation synthesizers using cascaded etalons
    Publication number: 20100165438
    Abstract: Described is a method for designing individual stages of a multiple cascaded etalon TDC device to allow continuous thermo-optic tuning over a desired range without inducing incremental signal distortion due to uncontrolled and unpredictable dispersion of the TDC during tuning. This allows the signal to transmit without encountering periods of incremental distortion or dark spots. The method includes prior knowledge of each etalon stage, after full assembly, for spectral group delay profile as a function of temperature through modeling and/or characterization. Characterization can account for performance variations that are due to allowed manufacturing tolerances.
    Type: Application
    Filed: December 3, 2009
    Publication date: July 1, 2010
    Inventors: Mark Summa, Peter Gerard Wigley, Aravanan Gurusami, Ghang-Ho Lee, Douglas Lleweilyn Butler, Robert David Paul Ridding, Timothy Kent Zahnley
  • Continuously tunable optical dispersion compensation synthesizers using cascaded etalons
    Patent number: 7706045
    Abstract: Described is a method for designing individual stages of a multiple cascaded etalon TDC device to allow continuous thermo-optic tuning over a desired range without inducing incremental signal distortion due to uncontrolled and unpredictable dispersion of the TDC during tuning. This allows the signal to transmit without encountering periods of incremental distortion or dark spots. The method includes prior knowledge of each etalon stage, after full assembly, for spectral group delay profile as a function of temperature through modeling and/or characterization. Characterization can account for performance variations that are due to allowed manufacturing tolerances.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: April 27, 2010
    Assignee: Oclaro North America, Inc.
    Inventors: Mark Summa, Peter Gerard Wigley, Aravanan Gurusami, Ghang-Ho Lee, Douglas Llewellyn Butler, Robert David Paul Ridding, Timothy Kent Zahnley
  • Continuously tunable optical dispersion compensation synthesizers using cascaded etalons
    Publication number: 20090109540
    Abstract: Described is a method for designing individual stages of a multiple cascaded etalon TDC device to allow continuous thermo-optic tuning over a desired range without inducing incremental signal distortion due to uncontrolled and unpredictable dispersion of the TDC during tuning. This allows the signal to transmit without encountering periods of incremental distortion or dark spots. The method includes prior knowledge of each etalon stage, after full assembly, for spectral group delay profile as a function of temperature through modeling and/or characterization. Characterization can account for performance variations that are due to allowed manufacturing tolerances.
    Type: Application
    Filed: October 26, 2007
    Publication date: April 30, 2009
    Inventors: Mark Summa, Peter Gerard Wigley, Aravanan Gurusami, Ghang-Ho Lee, Dounglas Llewellyn Butler, Robert David Paul Ridding, Timothy Kent Zahnley