Patents by Inventor Magnus G. Öberg

Magnus G. Öberg 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).

  • Patent number: 7308201
    Abstract: A node is provided in an optical communications network that utilizes a first set of add/drop filter elements for extracting and combining optical signals that are carried on wavelength division multiplexed channels in a first wavelength band. Additionally, an extraction element and a combining element for dropping and adding a service channel associated with the wavelength division multiplexed channels. The extraction element is arranged downstream of the add/drop filter elements. The extraction and combining elements are additionally adapted to drop and add, respectively, at least one further wavelength band carrying at least one optical traffic data channel.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: December 11, 2007
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ulf A. Persson, Magnus G. Öberg
  • Patent number: 7110673
    Abstract: In networks carrying existing optical traffic on one wavelength band in combination with wavelength division multiplexed traffic carried on a second wavelength band, there is a need to enable processing of the two systems without subjecting the WDM channels to unacceptable losses. The invention meets the above need by the provision of a node in an optical communications network that has a first set of add/drop filter elements for extracting and combining optical signals carried on wavelength division multiplexed channels in a first wavelength band and an extraction element and combining element for dropping and adding, respectively, a service channel associated with the wavelength division multiplexed channels. The extraction element is arranged upstream of the add/drop filter elements relative to the direction of traffic flow and the combining element is arranged downstream of the add/drop filter elements.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: September 19, 2006
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ulf A. Persson, Magnus G. Öberg