Patents by Inventor Richard W. Riffel

Richard W. Riffel 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).

  • Pump power monitor system and method for gain control of optical amplifier
    Patent number: 6810173
    Abstract: An optical fiber amplifier system includes an optical fiber adapted for use as an optical wave guide amplifier, and at least one optical pump optically coupled into the optical amplifier, wherein the pump receives both a DC electrical input and an AC electrical input, and wherein the pump provides an optical pump power to the optical fiber having both a DC optical power component and an AC optical power component. The optical fiber amplifier system also includes an optical pump power detector optically coupled to the pump, and at least one controller operatively connected to the pump power detector to determine the DC optical power component of the optical pump power, and wherein the controller adjusts the DC electrical input to the pump based on the DC optical power component.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: October 26, 2004
    Assignee: Avanex Corporation
    Inventors: Alan F. Evans, Paul Gavrilovic, Richard W. Riffel
  • Pump power monitor system and method for gain control of optical amplifier
    Publication number: 20020094158
    Abstract: An optical fiber amplifier system includes an optical fiber adapted for use as an optical wave guide amplifier, and at least one optical pump optically coupled into the optical amplifier, wherein the pump receives both a DC electrical input and an AC electrical input, and wherein the pump provides an optical pump power to the optical fiber having both a DC optical power component and an AC optical power component. The optical fiber amplifier system also includes an optical pump power detector optically coupled to the pump, and at least one controller operatively connected to the pump power detector to determine the DC optical power component of the optical pump power, and wherein the controller adjusts the DC electrical input to the pump based on the DC optical power component.
    Type: Application
    Filed: August 17, 2001
    Publication date: July 18, 2002
    Inventors: Alan F. Evans, Paul Gavrilovic, Richard W. Riffel