Patents by Inventor Douglas Markos

Douglas Markos 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).

  • FOUR-PORT OPTICAL FILTER FABRICATED FROM TAPERED OPTICAL FIBER
    Publication number: 20070154139
    Abstract: A four-port optical filter is provided including two tapered optical fibers, each having a loop in the area of their tapered portions, which are located relative to one another to form a ring resonator. The optical filter has a low Q with a broadband filter response which is useful as a channel interleaver or de-interleaver for dense wavelength division multiplexing and other applications.
    Type: Application
    Filed: October 5, 2006
    Publication date: July 5, 2007
    Inventors: Timothy Dimmick, Kevin Harper, Douglas Markos