Patents by Inventor Hee Gap Park

Hee Gap Park 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).

  • Superfluorescent fiber source with enhanced mean wavelength stability
    Patent number: 8254416
    Abstract: A doped superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method stabilizes the mean wavelength of a SFS. The method includes pumping the SFS with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light. The length of the fiber is selected to compromise between reduction of the dependence of the mean wavelength on the pump light power and reduction of the contribution of the forward amplified spantaneous emission light produced by the fiber to the output light.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: August 28, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Hee Gap Park, Michel J. F. Digonnet, Gordon S. Kino
  • SUPERFLUORESCENT FIBER SOURCE WITH ENHANCED MEAN WAVELENGTH STABILITY
    Publication number: 20100220387
    Abstract: A doped superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method stabilizes the mean wavelength of a SFS. The method includes pumping the SFS with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light. The length of the fiber is selected to compromise between reduction of the dependence of the mean wavelength on the pump light power and reduction of the contribution of the forward amplified spantaneous emission light produced by the fiber to the output light.
    Type: Application
    Filed: March 8, 2010
    Publication date: September 2, 2010
    Inventors: Hee Gap Park, Michel J.F. Digonnet, Gordon S. Kino
  • Superfluorescent fiber source with enhanced mean wavelength stability
    Patent number: 7764718
    Abstract: A doped superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method stabilizes the mean wavelength of a SFS. The method includes providing an SFS including a doped fiber. The method further includes pumping the SFS with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light. The method further includes optimizing the length of the fiber to reduce the influence of the pump light wavelength on the stability of the mean wavelength.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: July 27, 2010
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Hee Gap Park, Michel J. F. Digonnet, Gordon S. Kino
  • SUPERFLUORESCENT FIBER SOURCE WITH ENHANCED MEAN WAVELENGTH STABILITY
    Publication number: 20080144674
    Abstract: A doped superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method stabilizes the mean wavelength of a SFS. The method includes providing an SFS including a doped fiber. The method further includes pumping the SFS with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light. The method further includes optimizing the length of the fiber to reduce the influence of the pump light wavelength on the stability of the mean wavelength.
    Type: Application
    Filed: August 8, 2007
    Publication date: June 19, 2008
    Inventors: Hee Gap Park, Michel J.F. Digonnet, Gordon S. Kino
  • Er-doped superfluorescent fiber source with enhanced mean wavelength stability
    Patent number: 7269190
    Abstract: An erbium-doped (Er-doped) superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method determines an estimated mean wavelength of a SFS. The method includes providing an Er-doped SFS having an actual mean wavelength. The method further includes configuring the SFS such that the actual mean wavelength has a dependence on the temperature of the EDF. The method further includes obtaining the dependence of the actual mean wavelength on the temperature of the EDF. The method further includes measuring the temperature of the EDF. The method further includes calculating the estimated mean wavelength using the measured temperature of the EDF and the dependence of the actual mean wavelength on the temperature of the EDF.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: September 11, 2007
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Hee Gap Park, Michel J. F. Digonnet, Gordon S. Kino
  • Er-doped superfluorescent fiber source with enhanced mean wavelength stability
    Publication number: 20040141225
    Abstract: An erbium-doped (Er-doped) superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method determines an estimated mean wavelength of a SFS. The method includes providing an Er-doped SFS having an actual mean wavelength. The method further includes configuring the SFS such that the actual mean wavelength has a dependence on the temperature of the EDF. The method further includes obtaining the dependence of the actual mean wavelength on the temperature of the EDF. The method further includes measuring the temperature of the EDF. The method further includes calculating the estimated mean wavelength using the measured temperature of the EDF and the dependence of the actual mean wavelength on the temperature of the EDF.
    Type: Application
    Filed: October 1, 2003
    Publication date: July 22, 2004
    Inventors: Hee Gap Park, Michel J.F. Digonnet, Gordon S. Kino