Patents by Inventor Don E. Frymyer

Don E. Frymyer 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 communications system for transmitting information signals having different wavelengths over a same optical fiber
    Patent number: 5430568
    Abstract: An optical communications system provides optical signals of different wavelengths over an optical fiber having a zero dispersion wavelength. Electrical dispersion compensating elements independently compensate optical signals having wavelengths different than the zero dispersion wavelength for dispersion in the optical fiber. Limiting radio frequency signals for modulating a light emitting device or laser outputting signals at a wavelength different than the zero dispersion wavelength to less than one octave of frequency permits second order harmonic distortion resulting from dispersion in the fiber to be filtered at a receiving location. The optical communications system may include a reverse transmission path.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: July 4, 1995
    Assignee: Scientific-Atlanta, Inc.
    Inventors: Frank R. Little, Don E. Frymyer