Patents by Inventor C. Lewis Reynolds, Jr.

C. Lewis Reynolds, Jr. 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).

  • Wavelength tunable laser and method of formation
    Patent number: 6862394
    Abstract: A method of increasing the monomolecular recombination and the immunity to noise of a continuously tunable laser is disclosed. A concentration of recombination centers in the range of about 1×1016 cm?3 to about 1×1018 cm?3 in the tuning region of the laser device is achieved by doping the waveguide layer with impurity atoms, by irradiating the waveguide layer with high energy particles or by varying the growth conditions of the waveguide layer to introduce native point defects due to lattice mismatch. This way, the monomolecular recombination is increased and the radiative recombination over low current ranges is reduced. By increasing the monomolecular recombination, the immunity to noise is improved but the tuning efficiency is reduced. Nevertheless, only a minimal effect on the tuning efficiency is noted over high current ranges and, therefore, the overall tuning range is only insignificantly changed.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: March 1, 2005
    Assignee: Triquint Technology Holding Co.
    Inventors: David A. Ackerman, John E. Johnson, David V. Lang, C. Lewis Reynolds, Jr.