Patents by Inventor Stuart DS. Elby

Stuart DS. Elby 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).

  • Fiber optic tap
    Patent number: 4887879
    Abstract: A passive fiber optic tap for a single mode optical fiber is disclosed which utilizes cladding modes induced within the fiber by a microbender. The fiber has a symmetrically circular hour glass shaped notch for tapping radiation from the cladding mode and a detector converts light into an electrical signal. Large tapping ratios, low excess loss and structural compatibility with integrated circuity is obtained.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: December 19, 1989
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Paul R. Prucnal, Stuart DS. Elby, Edward E. Harstead