Patents by Inventor Sae H. Lee

Sae H. Lee 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).

  • Method for the production of optical waveguides employing trench and fill techniques
    Patent number: 5281305
    Abstract: A method is described for producing stacked optical waveguides in a silicon dioxide substrate and includes the steps of: etching a first trench in the substrate; filling the first trench with a glassy optical transmission media; depositing a layer of silicon dioxide over the filled trench; etching a second trench in the silicon dioxide layer, the second trench aligned with the first trench; and filling the second trench with a glassy optical transmission media.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: January 25, 1994
    Assignee: Northrop Corporation
    Inventors: Sae H. Lee, Richard L. Davis