Patents by Inventor Hatem ELREFAEI

Hatem ELREFAEI 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).

  • Integrated variable optical attenuator
    Patent number: 12761523
    Abstract: In some implementations, an electro-optical device includes a multi-mode interferometer (MMI) variable optical attenuator (VOA), comprising: an input to receive an optical beam; an output to output the optical beam; and an optical waveguide to couple the input to the output, wherein the optical waveguide is configured to self-image the optical beam within the optical waveguide; and a control component to apply a forward voltage across the MMI VOA to control attenuation of the MMI VOA.
    Type: Grant
    Filed: February 7, 2024
    Date of Patent: October 13, 2026
    Assignee: Lumentum Technology UK Limited
    Inventors: Bruce Saleeb-Mousa, Daniel Jorge Pires Jalo, Hatem Elrefaei, Ron Moore
  • INTEGRATED VARIABLE OPTICAL ATTENUATOR
    Publication number: 20250189860
    Abstract: In some implementations, an electro-optical device includes a multi-mode interferometer (MMI) variable optical attenuator (VOA), comprising: an input to receive an optical beam; an output to output the optical beam; and an optical waveguide to couple the input to the output, wherein the optical waveguide is configured to self-image the optical beam within the optical waveguide; and a control component to apply a forward voltage across the MMI VOA to control attenuation of the MMI VOA.
    Type: Application
    Filed: February 7, 2024
    Publication date: June 12, 2025
    Inventors: Bruce SALEEB-MOUSA, Daniel Jorge PIRES JALO, Hatem ELREFAEI, Ron MOORE