Patents by Inventor Hubert H. Caspers

Hubert H. Caspers 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).

  • Wide aperture optical communications detector
    Patent number: 4088884
    Abstract: Narrow-band detection of optical signals over a large field of view wherein the selective reflecting power of metallic vapors is employed. A modulated carrier signal to be detected is directed to a Brewster window of an enclosure containing a vapor such as mercury. Only the incident light of interest is reflected through an exit window and detected by means of a photo-multiplier.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: May 9, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Howard E. Rast, Hubert H. Caspers
  • Low-loss signal coupler for optical communications and integrated optics
    Patent number: 4081672
    Abstract: A method and means for coupling information or signal power into or out of iber optics for integrated optical waveguides. The coupling consists of selectively doping with impurity ions such as rare earth or transition metal ions which are excited to fluorescence within the waveguide by the frequency of the transmitted carrier wave. The fluorescent emission is then detected at right angles to the fiber using conventional photodetectors and amplifiers.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: March 28, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Hubert H. Caspers, Howard E. Rast, Jr.