Patents by Inventor Erin M. Casey

Erin M. Casey 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).

  • Magneto-optical crystal assembly for broadband temperature stable polarization rotation
    Patent number: 9551888
    Abstract: Embodiments of a magneto-optic crystal assembly for use in polarization rotation applications are disclosed. In one aspect, a magneto-optic crystal assembly includes two or more magneto-optic crystals. The temperature and wavelength dependencies of Faraday rotation of these crystals are compensated so that the crystal assembly has both reduced temperature and wavelength dependencies of the polarization rotation angle over broad temperature and wavelength ranges.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: January 24, 2017
    Assignee: LIGHTEL TECHNOLOGIES, INC.
    Inventors: Shyh-Chung Lin, Erin M. Casey
  • Optical Assembly For 90° Polarization Rotation
    Publication number: 20150370096
    Abstract: Embodiments of an optical assembly for use in polarization rotation applications are disclosed. In one aspect, an optical assembly includes a polarization beam splitter a rotational element and a path exchange mirror. The temperature, wavelength and manufacturing dependencies of polarization rotation of this optical assembly are minimal to nonexistent compared to conventional Faraday rotation assemblies as the optical fiber accepts only the desired rotation. As such these optical assemblies have no temperature and wavelength dependencies of the polarization rotation angle over broad temperature and wavelength ranges with minimal additional losses.
    Type: Application
    Filed: June 23, 2014
    Publication date: December 24, 2015
    Inventors: Shyh-Chung Lin, Erin M. Casey, Hsin-Jung Lee
  • Optical Assembly For 90° Polarization Rotation
    Publication number: 20150370097
    Abstract: Embodiments of an optical assembly for use in polarization rotation applications are disclosed. In one aspect, an optical assembly includes a polarization beam splitter a rotational element and a path exchange mirror. The temperature, wavelength and manufacturing dependencies of polarization rotation of this optical assembly are minimal to nonexistent compared to conventional Faraday rotation assemblies as the optical fiber accepts only the desired rotation. As such these optical assemblies have no temperature and wavelength dependencies of the polarization rotation angle over broad temperature and wavelength ranges with minimal additional losses. In another aspect, the polarization dependence of reflection from the path exchange mirror is managed so as to minimize the polarization effect associated with oblique incidence.
    Type: Application
    Filed: September 26, 2014
    Publication date: December 24, 2015
    Applicant: Lightel Technologies, Inc.
    Inventors: Shyh-Chung Lin, Erin M. Casey, Hsin-Jung Lee
  • Magneto-Optical Crystal Assembly For Broadband Temperature Stable Polarization Rotation
    Publication number: 20150192804
    Abstract: Embodiments of a magneto-optic crystal assembly for use in polarization rotation applications are disclosed. In one aspect, a magneto-optic crystal assembly includes two or more magneto-optic crystals. The temperature and wavelength dependencies of Faraday rotation of these crystals are compensated so that the crystal assembly has both reduced temperature and wavelength dependencies of the polarization rotation angle over broad temperature and wavelength ranges.
    Type: Application
    Filed: January 3, 2014
    Publication date: July 9, 2015
    Applicant: Lightel Technologies, Inc.
    Inventors: Shyh-Chung Lin, Erin M. Casey