Patents Assigned to REDC Optical Networks Inc.
  • 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