Patents by Inventor Aarne Karp

Aarne Karp 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).

  • Method and apparatus for distinguishing between defects in an optical fiber coating
    Patent number: 5828448
    Abstract: The present invention provides an optical detection system for detecting defects in an optical fiber. The system includes a light source for coupling light into the secondary coating of an optical fiber at a preselected angle with respect to the longitudinal axis of the fiber and an optical detector positioned adjacent the fiber at a preselected distance from the point at which the light is coupled into the fiber coating. In accordance with one embodiment, the light is coupled into the fiber coating at a sufficiently shallow angle with respect to the longitudinal axis of the fiber to cause the light to travel through the coating in a direction substantially parallel to the axis of the optical fiber for some distance before exiting the coating.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: October 27, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Christian Jakobsen, Flemming Pedersen, Leonardo M. Penn, Tracy E. Brewer, Aarne Karp, David H. Smithgall
  • Method and apparatus for detecting defects in an optical fiber coating
    Patent number: 5786891
    Abstract: The present invention provides an optical detection system for detecting defects in an optical fiber. The system includes a light source for coupling light into the secondary coating of an optical fiber at a preselected angle with respect to the longitudinal axis of the fiber and an optical detector positioned adjacent the fiber at a preselected distance from the point at which the light is coupled into the fiber coating. In accordance with one embodiment, the light is coupled into the fiber coating at a sufficiently shallow angle with respect to the longitudinal axis of the fiber to cause the light to travel through the coating in a direction substantially parallel to the axis of the optical fiber for some distance before exiting the coating.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: July 28, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Christian Jakobsen, Flemming Pedersen, Leonardo M. Penn, Tracy E. Brewer, Aarne Karp, David H. Smithgall