Patents by Inventor Tomer Eliyahu

Tomer Eliyahu 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).

  • Hybrid optical amplifier with optimized noise figure
    Patent number: 8817365
    Abstract: Methods for optimizing a noise figure of a variable gain hybrid amplifier (HA) which includes a variable gain Raman amplifier with adjustable average gain GR and gain tilt TR and a variable gain lumped amplifier with adjustable average gain GL and gain tilt TL. In various embodiments, the methods include receiving as input a required hybrid amplifier average gain GH value and a required gain tilt TH value and deriving a set of GR, TR, GL and TL values which yield an optimal optimized hybrid amplifier NF and satisfy the conditions GR+GL=GH and that TR+TL is within a specified hybrid amplifier operating tilt range. In some embodiments, the derived TR and TL values satisfy the condition TR+TL=TH.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: August 26, 2014
    Assignee: Finisar Israel Ltd.
    Inventors: Tomer Eliyahu, Eyal Sarid, Uri Ghera, David Menashe
  • HYBRID OPTICAL AMPLIFIER WITH OPTIMIZED NOISE FIGURE
    Publication number: 20140022626
    Abstract: Methods for optimizing a noise figure of a variable gain hybrid amplifier (HA) which includes a variable gain Raman amplifier with adjustable average gain GR and gain tilt TR and a variable gain lumped amplifier with adjustable average gain GL and gain tilt TL. In various embodiments, the methods include receiving as input a required hybrid amplifier average gain GH value and a required gain tilt TH value and deriving a set of GR, TR, GL and TL values which yield an optimal optimized hybrid amplifier NF and satisfy the conditions GR+GL=GH and that TR+TL is within a specified hybrid amplifier operating tilt range. In some embodiments, the derived TR and TL values satisfy the condition TR+TL=TH.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 23, 2014
    Applicant: RED-C OPTICAL NETWORKS LTD.
    Inventors: Tomer Eliyahu, Eyal Sarid, Uri Ghera, David Menashe
  • Efficient wavelength referencing in a combined optical amplifier-optical channel monitor apparatus
    Patent number: 7385754
    Abstract: Efficient wavelength calibration in a WDM optical amplifier that includes an optical channel monitor (OCM) is obtained by introducing a notch into the amplified spontaneous emission (ASE) noise spectrum of the amplifier outside a WDM transmission band, and having the OCM detect the notch and use the notch as a reference to calibrate the wavelength measurement. The notch is introduced into the ASE noise spectrum using a notch filter, which is preferably incorporated in a gain flattening filter (GFF).
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: June 10, 2008
    Assignee: REDC Optical Networks Inc.
    Inventors: Uri Ghera, Alex Shlifer, Tomer Eliyahu, David Menashe
  • Efficient wavelength referencing in a combined optical amplifier-optical channel monitor apparatus
    Publication number: 20070206273
    Abstract: Efficient wavelength calibration in a WDM optical amplifier that includes an optical channel monitor (OCM) is obtained by introducing a notch into the amplified spontaneous emission (ASE) noise spectrum of the amplifier outside a WDM transmission band, and having the OCM detect the notch and use the notch as a reference to calibrate the wavelength measurement. The notch is introduced into the ASE noise spectrum using a notch filter, which is preferably incorporated in a gain flattening filter (GFF).
    Type: Application
    Filed: March 6, 2006
    Publication date: September 6, 2007
    Inventors: Uri Ghera, Alex Shlifer, Tomer Eliyahu, David Menashe