Patents by Inventor Sagie Asraf

Sagie Asraf 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).

  • Ultrahigh resolution photonic spectral processor
    Patent number: 10914633
    Abstract: Disclosed are a method for achieving ultrahigh spectral resolution and a photonic spectral processor, which is designed to carry out the method. The disclosed photonic spectral processor overcomes the current 0.8 GHz spectral resolution limitation. The new spectral processor uses a Fabry-Perot interferometer array located before the dispersive element of the system, thus significantly improving the spectral separation resolution, which is now limited by the full width at half maximum of the Fabry-Perot interferometer rather than the spectral resolution of the dispersive element spectral as is the current situation. A proof of concept experiment utilizing two Fabry-Perot interferometers and a diffractive optical grating with spectral resolution of 6.45 GHz achieving high spectral resolution of 577 MHz is described.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 9, 2021
    Assignees: Bar Ilan University, B. G. Negev Technologies and Applications Ltd., at Ben-Gurion University
    Inventors: Dan Sadot, Zeev Zalevsky, Tomer Yeminy, Sagie Asraf
  • ULTRAHIGH RESOLUTION PHOTONIC SPECTRAL PROCESSOR
    Publication number: 20190277694
    Abstract: Disclosed are a method for achieving ultrahigh spectral resolution and a photonic spectral processor, which is designed to carry out the method. The disclosed photonic spectral processor overcomes the current 0.8 GHz spectral resolution limitation. The new spectral processor uses a Fabry-Perot interferometer array located before the dispersive element of the system, thus significantly improving the spectral separation resolution, which is now limited by the full width at half maximum of the Fabry-Perot interferometer rather than the spectral resolution of the dispersive element spectral as is the current situation. A proof of concept experiment utilizing two Fabry-Perot interferometers and a diffractive optical grating with spectral resolution of 6.45 GHz achieving high spectral resolution of 577 MHz is described.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Inventors: Dan Sadot, Zeev Zalevsky, Tomer Yeminy, Sagie Asraf