Patents by Inventor Kai R. Poguntke

Kai R. Poguntke 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).

  • Multi-stripe array grating integrated cavity laser
    Patent number: 5351262
    Abstract: An integrated, multi-wavelength laser having formed on a substrate (12) a plurality of active, individually selectable waveguides (14), a passive output waveguide (16), and a diffraction grating (18) formed in a Rowland-circle spectrometer geometry. The frequency of the lasing light is determined by-the geometrical relationship of the selected active waveguide, the diffraction grating, and the output waveguide. The active waveguides are positioned such that lasing light cannot diffract between two active waveguides. Little crosstalk occurs because no carrier depletion occurs in the output waveguide.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: September 27, 1994
    Assignee: Bell Communications Research, Inc.
    Inventors: Kai R. Poguntke, Julian B. D. Soole