Patents by Inventor Assaf GRINBERG

Assaf GRINBERG 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).

  • Polymer-coated high-index waveguide for acoustic sensing
    Patent number: 11619543
    Abstract: Apparatus is provided including an acoustic sensor (50) having an optical waveguide (20). The optical waveguide (20) includes a waveguide core (202) having a waveguide core refractive index and a waveguide core photo-elastic coefficient, and an over-cladding layer (204) coupled to the waveguide core (202) and including an optically transparent polymer having an over-cladding refractive index and an over-cladding photo-elastic coefficient. The waveguide core refractive index is greater than the over-cladding refractive index, and the over-cladding photo-elastic coefficient is greater than the waveguide core photo-elastic coefficient. Other applications are also described.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: April 4, 2023
    Assignee: TECHNION RESEARCH & DEVELOPMENT FOUNDATION LIMITED
    Inventors: Amir Rozental, Resmi Ravi Kumar, Shai Tsesses, Assaf Grinberg
  • POLYMER-COATED HIGH-INDEX WAVEGUIDE FOR ACOUSTIC SENSING
    Publication number: 20210325237
    Abstract: Apparatus is provided including an acoustic sensor (50) having an optical waveguide (20). The optical waveguide (20) includes a waveguide core (202) having a waveguide core refractive index and a waveguide core photo-elastic coefficient, and an over-cladding layer (204) coupled to the waveguide core (202) and including an optically transparent polymer having an over-cladding refractive index and an over-cladding photo-elastic coefficient. The waveguide core refractive index is greater than the over-cladding refractive index, and the over-cladding photo-elastic coefficient is greater than the waveguide core photo-elastic coefficient. Other applications are also described.
    Type: Application
    Filed: August 20, 2019
    Publication date: October 21, 2021
    Inventors: Amir ROZENTAL, Resmi Ravi KUMAR, Shai TSESSES, Assaf GRINBERG