Patents by Inventor Winter Marcus

Winter Marcus 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 I-Q-modulator
    Patent number: 8295710
    Abstract: The invention describes a modulator for the quadrature modulation of an optical carrier signal with an I- and a Q-portion, where a first optical multimode interferometer (MMI) splits the optical carrier signal into four branches and that in pairs of branches the I-portion and the Q-portion respectively is modulated with a Mach-Zehnder-Structure and a second optical multimode interferometer (MMI) combines the modulated I-portion and Q-portion again to one quadrature modulated optical output signal (OS).
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: October 23, 2012
    Assignee: Nokia Siemens Networks Oy
    Inventor: Winter Marcus