Patents by Inventor Rene E. Kristiansen

Rene E. Kristiansen 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).

  • Bidirectional router and a method of bidirectional amplification
    Patent number: 7277635
    Abstract: The invention relates to a router which may be used for amplification of a bidirectional optical signal using a single optical amplifier. An advantageous embodiment of the invention comprises two 3 dB couplers which are serially connected via a delay element. According to the embodiment, the delay element comprises a difference in distance ?L between the two optical branches which connect the two 3 dB couplers.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: October 2, 2007
    Assignee: Tellabs Denmark A/S
    Inventor: René E. Kristiansen
  • Bidirectional router and a method of bidirectional amplification
    Publication number: 20040156093
    Abstract: The invention relates to a router which may be used for amplification of a bidirectional optical signal using a single optical amplifier.
    Type: Application
    Filed: February 4, 2004
    Publication date: August 12, 2004
    Inventor: Rene E. Kristiansen
  • Bidirectional router and a method of bidirectional amplification
    Patent number: 6724995
    Abstract: The invention relates to a router which may be used for amplification of a bidirectional optical signal using a single optical amplifier. An advantageous embodiment of the invention comprises two 3 dB couplers which are serially connected via a delay element. According to the embodiment, the delay element comprises a difference in distance &Dgr;L between the two optical branches which connect the two 3 dB couplers.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: April 20, 2004
    Assignee: Tellabs Denmark A/S
    Inventor: René E. Kristiansen