Patents by Inventor David Rolland Blaine Seniuk

David Rolland Blaine Seniuk 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).

  • Passive method and apparatus for inducing mode conversion
    Patent number: 7289688
    Abstract: A waveguide for use in polarization mode converters and polarization modulators using extrinsic strain to prerotate the principal axes and control birefringence is disclosed herein. The invention relates to the orienting of principal propagation axes in an optical waveguide by pre-stressing the waveguide, using an extrinsic stress, to re-orient the principal propagation axes from an unstressed orientation to a substantially ideal orientation. The waveguide is preferably stressed by an extrinsic strain inducer which applies a shear force to the waveguide to induce anisometry in the waveguide structure.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: October 30, 2007
    Assignee: Versawave Technologies Inc.
    Inventors: Jeffrey D. Bull, Nicolas August Fleming Jaeger, Hiroshi Kato, David Rolland Blaine Seniuk