Patents Examined by Frank G. Front
  • Mach-zehnder interferomter (MZI) filter devices
    Patent number: 6763155
    Abstract: A method of making an asymmetric Mach-Zehnder Interferometer (MZI) adjusts the length of the arms of two Michelson Interferometers, (MI) to achieve desired wavelength response then combines the MIs to provide the MZI. An asymmetric MZI is, therefore, provided which comprises two asymmetric MIs optically connected back-to-back.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: July 13, 2004
    Assignee: Peleton Photonic Systems Inc.
    Inventors: Jae Dong Park, Ken Hongkeun Cho, Hamid Hatami-Hanza, Nima Ahmadvand
  • Fiber optic wall shear stress sensor
    Patent number: 6426796
    Abstract: A fiber optic wall shear stress sensor is presented. The sensor comprises a floating head supported by a physical arrangement. At least one optical fiber is positioned in an operable relationship to the floating head wherein an interferometric region is formed between the floating head and each optical fiber. The interferometric region changes in response to a shear force on the floating head.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: July 30, 2002
    Assignees: Luna Innovations, Inc., VA Tech Intellectual Properties, Inc.
    Inventors: Wade J. Pulliam, Joseph A. Schetz, Mark E. Jones, Kent A. Murphy