Patents by Inventor Logan Ezral Hargrove

Logan Ezral Hargrove 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).

  • Optical waveguide having periodic spatial perturbations
    Patent number: 4093343
    Abstract: An optical waveguide in which intermodal coupling is deliberately induced. Perturbations are introduced along the waveguide. The perturbations have a spatial frequency that varies along the guide from f.sub.1 to f.sub.2, where f.sub.2 is .ltoreq. the critical frequency above which coupling to unguided modes occurs and f.sub.1 corresponds to the beat between the n.sup.th and the (n + 1).sup.th modes, the lowest modes of interest propagating in the guide.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: June 6, 1978
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Logan Ezral Hargrove