Patents by Inventor Pascal Landais

Pascal Landais 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).

  • Semiconductor optical amplifier with a reduced noise figure
    Patent number: 8384993
    Abstract: A semiconductor optical amplifier for amplifying an optical signal. The amplifier comprises an input for receiving the optical signal and an output for outputting an amplified version of the optical signal. A semiconductor active medium is provided for defining an amplification path extending between the input and the output for amplifying the optical signal as the optical signal propagates along the amplification path. A control means selectively controls the amplified spontaneous emission (ASE) of the semiconductor optical amplifier. The control means is co-operable with the active medium for selectively varying carrier density along the amplification path.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: February 26, 2013
    Assignee: Dublin City University
    Inventors: Pascal Landais, Frederic Surre
  • SEMICONDUCTOR OPTICAL AMPLIFIER WITH A REDUCED NOISE FIGURE
    Publication number: 20100134877
    Abstract: A semiconductor optical amplifier for amplifying an optical signal. The amplifier comprises an input for receiving the optical signal and an output for outputting an amplified version of the optical signal. A semiconductor active medium is provided for defining an amplification path extending between the input and the output for amplifying the optical signal as the optical signal propagates along the amplification path. A control means selectively controls the amplified spontaneous emission (ASE) of the semiconductor optical amplifier. The control means is co-operable with the active medium for selectively varying carrier density along the amplification path.
    Type: Application
    Filed: November 25, 2009
    Publication date: June 3, 2010
    Inventors: Pascal Landais, Frederic Surre