Patents by Inventor William H. Hatton

William H. Hatton 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 of measuring the refractive index profile of optical fibers
    Patent number: 4779978
    Abstract: A method is disclosed for determining the refractive index profile of an optical fiber wherein light from an intense optical source is focused at the bare fiber end portion of the test fiber. A small amount of light will be coupled into the optical fiber where for the short length of uncoated fiber only cladding modes are excited. The index of refraction is determined directly by analyzing the intensity distribution emitted from the optical fiber with a lens system having a limited numerical aperture.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: October 25, 1988
    Assignee: Sumitomo Electric Research Triangle, Inc.
    Inventors: William H. Hatton, Eric L. Buckland, Masayuki Nishimura
  • Method of measuring the geometry of optical fibers
    Patent number: 4662743
    Abstract: A method for measuring certain geometrical properties of an optical fiber wherein the coating is removed from adjacent one end of the fiber, a high intensity light source is focused at the bare fiber and coating interface in order to couple scattered light into the optical fiber cladding and the intensity distribution of the transmitted light at the end face of optical fiber is analyzed. In this fashion nonuniformities on the end face of the optical fiber will not substantially affect the accuracy of measurements of geometrical properties of the cladding region of the optical fiber.
    Type: Grant
    Filed: November 1, 1985
    Date of Patent: May 5, 1987
    Assignee: Sumitomo Electric Research Triangle, Inc.
    Inventors: Masayuki Nishimura, William H. Hatton