Patents by Inventor Ana Ferreira

Ana Ferreira 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 MODULATOR
    Publication number: 20130004175
    Abstract: An optical modulator and a method for operating the optical modulator are provided, the optical modulator contains at least two semiconductor optical amplifier sections that are arranged in a cascaded structure. An information signal is applicable to one of the semiconductor optical amplifier sections and an inverse information signal is applicable to another of the semiconductor optical amplifier sections. In addition, a communication system containing at least one such modulator is suggested.
    Type: Application
    Filed: February 22, 2011
    Publication date: January 3, 2013
    Applicant: NOKIA SIEMENS NETWORKS OY
    Inventors: Tiago Silveira, Ana Ferreira