Patents by Inventor Bruce Gregory Tiemann

Bruce Gregory Tiemann 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).

  • Patent number: 10942312
    Abstract: A photonic integrated circuit (PIC) with embedded optical temperature sensing includes an optical interferometer containing a first arm and a second arm, and one or more optical waveguide sections configured to measure an internal temperature of the PIC. The one or more optical waveguide sections are implemented as one or more sections of the first arm and the second arm. The first arm and the second arm have a first optical path length (OPL) and a second OPL and are made of a first material and a second material, respectively.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 9, 2021
    Assignee: Lockheed Martin Corporation
    Inventor: Bruce Gregory Tiemann
  • Patent number: 10578494
    Abstract: An apparatus includes a photonic integrated circuit (PIC) to measure an optical wavelength of a light source. The PIC includes an optical splitter, a plurality of tunable interferometers and one or more detectors. The optical splitter is coupled to the light source, and the interferometers are coupled to the optical splitter. Each interferometer receives a portion of an optical signal of the light source. One or more detectors are coupled to each interferometer, and the interferometers have different free spectral ranges (FSRs). A largest FSR value of the different FSRs is greater than an entire intended wavelength measurement range of the PIC.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: March 3, 2020
    Assignee: Lockheed Martin Coherent Technologies, Inc.
    Inventors: Bruce Gregory Tiemann, Paul Johan Mikael Suni
  • Patent number: 10394042
    Abstract: An apparatus includes a source configured to generate a beam of electromagnetic radiation propagating in a first direction and a spatial filter. The spatial filter is configured to restrict the beam of electromagnetic radiation in one or more dimensions and includes at least one set of rods including a first rod and a second rod. The first rod is a first cylindrical structure with a first axis in a first plane and the second rod is a second cylindrical structure with a second axis in a second plane parallel to the first plane. The first axis and the second axis are longitudinal axes, and the first and the second rods have shaped surfaces in portions of their respective surfaces facing one another.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: August 27, 2019
    Assignee: Lockheed Martin Coherent Technologies, Inc.
    Inventors: Bruce Gregory Tiemann, Glenn T. Bennett, Joel Richard Blum