Patents by Inventor Stuart Robert Barnes

Stuart Robert Barnes 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).

  • Depolarised WDM source
    Patent number: 8380064
    Abstract: A device and method for depolarising the total field of a wavelength division multiplexed (WDM) signal is provided. A polarization maintaining multiplexor combines a plurality of optical signals to form a polarized multiplexed signal. The multiplexed signal is then passed through a differential group delay (DGD) element adapted to modify the polarization state of one or more optical source signals within the multiplexed signal and thereby to at least partially depolarise the multiplexed signal.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: February 19, 2013
    Assignee: Xtera Communications, Inc.
    Inventors: Stephen Desbruslais, Richard Oberland, Stuart Robert Barnes, Stephen Michael Webb