Patents by Inventor Peter A. Andrekson

Peter A. Andrekson 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).

  • Optical sampling with coherent detection
    Patent number: 8280245
    Abstract: An optical sampling arrangement for high-speed measurement of the time-varying electric field of a data-carrying optical input signal. The present invention includes optical sampling of the optical input signal, followed by coherent mixing with a reference laser source in an optical hybrid solution. The generated streams of mixed optical samples are then detected and signal processed in order to reconstruct a sampled version of the electric field of the data-carrying optical input signal.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: October 2, 2012
    Assignee: EXFO. Inc.
    Inventors: Mathias Westlund, Mats Sköld, Henrik Sunnerud, Peter A. Andrekson
  • Optical Sampling With Coherent Detection
    Publication number: 20100215357
    Abstract: An optical sampling arrangement for high-speed measurement of the time-varying electric field of a data-carrying optical input signal. The present invention includes optical sampling of the optical input signal, followed by coherent mixing with a reference laser source in an optical hybrid solution. The generated streams of mixed optical samples are then detected and signal processed in order to reconstruct a sampled version of the electric field of the data-carrying optical input signal.
    Type: Application
    Filed: February 23, 2010
    Publication date: August 26, 2010
    Inventors: Mathias Westlund, Mats Sköld, Henrik Sunnerud, Peter A. Andrekson
  • Method and apparatus for improving performance in noise limited optical transmission systems
    Publication number: 20030133652
    Abstract: A method and apparatus for improving the performance in OSNR-limited systems includes selective pre-chirping of a transmitted optical signal, such that, in combination with the link dispersion, a net pulse compression is obtained at the receive end of an optical link.
    Type: Application
    Filed: November 25, 2002
    Publication date: July 17, 2003
    Inventors: Peter A. Andrekson, Jonas Hansryd