Patents by Inventor David T. Mathes

David T. Mathes 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 reflectometry using integrated VCSEL photodiode chip
    Patent number: 7403275
    Abstract: Optical time domain and frequency domain reflectometry using a VCSEL-photodiode combination. Optical time domain reflectometry can be accomplished using an integrated VCSEL-Photodiode. A pulse is emitted by the VCSEL and a reflection caused by an occurrence of interest along an optical waveguide is detected by the photodiode. The time between when the pulse is emitted and when the reflection is received can be used to determine a distance to the occurrence of interest. In Optical frequency domain applications, a VCSEL is wavelength modulated. An occurrence of interest will affect the output of the VCSEL. The affected output is detected and used to determine a distance to the occurrence of interest.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: July 22, 2008
    Assignee: Finisar Corporation
    Inventors: David T. Mathes, James K. Guenter
  • OPTICAL REFLECTOMETRY USING INTEGRATED VCSEL PHOTODIODE CHIP
    Publication number: 20080129983
    Abstract: Optical time domain and frequency domain reflectometry using a VCSEL-photodiode combination. Optical time domain reflectometry can be accomplished using an integrated VCSEL-Photodiode. A pulse is emitted by the VCSEL and a reflection caused by an occurrence of interest along an optical waveguide is detected by the photodiode. The time between when the pulse is emitted and when the reflection is received can be used to determine a distance to the occurrence of interest. In Optical frequency domain applications, a VCSEL is wavelength modulated. An occurrence of interest will affect the output of the VCSEL. The affected output is detected and used to determine a distance to the occurrence of interest.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 5, 2008
    Applicant: FINISAR CORPORATION
    Inventors: David T. Mathes, James K. Guenter