Patents by Inventor Alexander J. Dufort

Alexander J. Dufort 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).

  • System and method for wave vector multiplexed laser communication
    Patent number: 7639948
    Abstract: Wave vector division multiplexing (“WVDM”) is a method of free-space multiplexing for optical communications. In WVDM, wave vectors of individual laser beams are manipulated so that each individual laser beam has a unique wave vector. These individual laser beams are multiplexed into an aggregate beam, which is transmitted to a receiver. The receiver separates the individual laser beams on the basis of their unique wave vectors. One area where WVDM is useful is in quantum cryptography. WVDM can also be combined with traditional wavelength division multiplexing (“WDM”) to increase throughput even further.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 29, 2009
    Assignee: The MITRE Corporation
    Inventors: Gerald N. Gilbert, Michael D. Hamrick, Martin A. Jaspan, Jayson L. Cohen, Anthony Donadio, Alexander J. Dufort