Patents by Inventor Judith A. Grenko

Judith A. Grenko 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).

  • Net strain reduction in integrated laser-modulator
    Patent number: 6239454
    Abstract: A semiconductor device including first and second epitaxial layers grown in a selective area growth region on a substrate includes an active layer or well layer comprising a first composition formed using a trimethylgallium precursor material and a barrier layer comprising a second composition formed using a triethylgallium precursor material. The use of the first and second compositions in the well layer and barrier layer respectively maximizes the strain in the well layer while simultaneously minimizing the net strain of the selective area growth region.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: May 29, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Richard W. Glew, Judith A. Grenko