Patents by Inventor Roger Jonathon Helkey

Roger Jonathon Helkey 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).

  • Feedback stabilization of a loss optimized switch
    Patent number: 6728433
    Abstract: A system is provided to obtain loss optimized output optical power by way of feedback control and stabilization in an optical signal switching or routing system. The optical signal switching or routing system includes at least two input optical fibers and at least two output optical fibers, a controllable mechanism for directing an optical beam from one of the input optical fibers to one of the output optical fibers, and a mechanism for measuring the optical power applied to output optical fiber. The measuring mechanism provides a measure of the output optical power through a signal processing apparatus to a control apparatus. Possible other inputs to the signal processing apparatus include the input optical power, test optical power, etc. The inputs to the signal processing apparatus are compared and the signal processing apparatus outputs a signal to the control apparatus to provide optimized output power.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: April 27, 2004
    Assignee: Calient Networks, Inc.
    Inventors: John Edward Bowers, Roger Jonathon Helkey
  • Feedback stabilization of a loss optimized switch
    Patent number: 6456751
    Abstract: A system is provided to obtain loss optimized output optical power by way of feedback control and stabilization in an optical signal switching or routing system. The optical signal switching or routing system includes at least two input optical fibers and at least two output optical fibers, a controllable mechanism for directing an optical beam from one of the input optical fibers to one of the output optical fibers, and a mechanism for measuring the optical power applied to output optical fiber. The measuring mechanism provides a measure of the output optical power through a signal processing apparatus to a control apparatus. Possible other inputs to the signal processing apparatus include the input optical power, test optical power, etc. The inputs to the signal processing apparatus are compared and the signal processing apparatus outputs a signal to the control apparatus to provide optimized output power.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: September 24, 2002
    Assignee: Calient Networks, Inc.
    Inventors: John Edward Bowers, Roger Jonathon Helkey