Patents by Inventor Dimitri Foursa

Dimitri Foursa 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).

  • Method and apparatus to perform lumped raman amplification
    Patent number: 6456425
    Abstract: A method and apparatus to amplify an optical signal is described. A first filter splits an optical signal into a first and second parts. A first raman amplifier amplifies the first part. A second raman amplifier amplifies the second part. A combiner combines the amplified first and second parts.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: September 24, 2002
    Assignee: Tyco Telecommunications (US) Inc.
    Inventors: Dimitri Foursa, Howard Kidorf, Alexei Pilipetski
  • Method and apparatus to perform automatic gain equalization using raman amplifiers
    Patent number: 6384962
    Abstract: A method and apparatus to perform automatic gain equalization for a lightwave communications system is described. A first amplifier amplifies an optical signal to produce a first gain curve having a first gain maxima and a first gain minima of a first period. A second amplifier amplifies the optical signal to produce a second gain curve with a second gain maxima and a second gain minima of a second period, with the second gain maxima substantially coinciding with the first gain minima.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: May 7, 2002
    Assignee: TyCom (US) Inc.
    Inventors: Dimitri Foursa, Bo Pedersen