Patents by Inventor Steve J. Licht

Steve J. Licht 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).

  • Article comprising a faraday rotator that does not require a bias magnet
    Patent number: 6770223
    Abstract: Faraday rotator garnet thick films have improved specific Faraday rotations without requiring a bias magnet. Films of nominal composition BiX(EuZHo1-Z)3-XFe5-YGaYO12 are grown lattice matched to available {Gd2.68Ca0.32}[Ga1.04Mg0.32Zr0.64](Ga3)O12 substrates. The film is prepared with Z ≦0.45, which allows higher concentrations of Bi to be included in the film than prior compositions. The increased amount of Bi results in a higher specific Faraday rotations for the film. For devices such as non-reciprocal optoelectronic devices that require 45-degree rotators, the increased specific Faraday rotation results in the use of thinner films of reduced path length as well as increased crystal growth yields.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: August 3, 2004
    Assignee: Integrated Photonics, Inc.
    Inventors: Robert R. Abbott, Vincent J. Fratello, Steve J. Licht, Irina Mnushkina