Patents Assigned to Deutache Aerospace AG
  • Device for generating feedback signals to regulate optical monitoring circuits (PLL)
    Patent number: 5467414
    Abstract: An optical device for generating a modulated, phase controlled RF carrier by combining a modulated optical carrier signal having a first frequency with an unmodulated optical reference signal having a second frequency. The modulated and unmodulated signals are polarized on orthogonal axes and are transmitted in a single optical waveguide. Modulation of the optical carrier is performed, for example, by means of an integrated optical device which modulates only one polarization direction.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: November 14, 1995
    Assignees: Deutache Aerospace AG, GEC-Marconi, Ltd.
    Inventors: Wolfram Birkmayer, Michael J. Wale, Colin Edge