Patents by Inventor Lynden E Erickson

Lynden E Erickson 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).

  • Wavelength stabilized planar waveguide optical devices incorporating a dispersive element
    Patent number: 6339662
    Abstract: A planar waveguide optical device whose wavelengths are stabilized by temperature, has an input channel, a series of output data channels, and a dispersive element, such as a diffraction grating or phase array, for directing component wavelengths of incoming light into the respective output data channels. A pair of monitor channels have a separation less than, and a width greater than, the data channels. A differential feedback arrangement controls the temperature of the demultiplexer according a differential signal received from the pair of monitor channels.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: January 15, 2002
    Assignee: National Research Council of Canada
    Inventors: Emil S. Koteles, Jian-Jun He, Lynden E Erickson, Boris Lamontagne, André Delâge