Patents by Inventor Jeffrey T. Sroga

Jeffrey T. Sroga 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: 9413471
    Abstract: A compact photonic radio frequency receiver system includes a laser source that is configured to generate laser light Radio frequency (RF) and local oscillator (LO) input ports may receive RF and LO signals, respectively. One or more miniature lithium niobate waveguide phase modulators may be coupled to the laser source to receive the RF and LO signals and to modulate the laser light with the RF and LO signals in a first and a second path, and to generate phase-modulated laser lights including an RF-modulated light signal and an LO-modulated light signal. A first and a second miniature filter may be coupled to the miniature lithium niobate waveguide to separate a desired spectral band in the phase-modulated laser light of the first path and to facilitate wavelength locking of the laser light of the second path. An optical combiner may combine output laser lights of the first and second filters.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 9, 2016
    Assignee: Lockheed Martin Corporation
    Inventors: Thomas W. Karras, Stephen V. Robertson, Jeffrey T. Sroga, Arthur Paolella
  • Publication number: 20150132005
    Abstract: A compact photonic radio frequency receiver system includes a laser source that is configured to generate laser light Radio frequency (RF) and local oscillator (LO) input ports may receive RF and LO signals, respectively. One or more miniature lithium niobate waveguide phase modulators may be coupled to the laser source to receive the RF and LO signals and to modulate the laser light with the RF and LO signals in a first and a second path, and to generate phase-modulated laser lights including an RF-modulated light signal and an LO-modulated light signal. A first and a second miniature filter may be coupled to the miniature lithium niobate waveguide to separate a desired spectral band in the phase-modulated laser light of the first path and to facilitate wavelength locking of the laser light of the second path.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 14, 2015
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Thomas W. Karras, Stephen V. Robertson, Jeffrey T. Sroga, Arthur Paolella