Patents by Inventor Tristan Tayag

Tristan Tayag 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).

  • Self-imaging waveguide devices for wavelength division multiplexing applications
    Patent number: 5862288
    Abstract: An out-of-phase self-imaging waveguide integrated optical wavelength demuplexer having an input waveguide containing light of two different wavelengths. The demultiplexer has a 1-by-2 self-imaging power splitter, a first intermediate waveguide containing the two wavelengths of light, a second intermediate waveguide longer than the first intermediate waveguide, a 2-by-2 self-imaging coupler having the first and second intermediate waveguides as inputs, an output waveguide containing light of one wavelength only, and an output waveguide containing light of the other wavelength only.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: January 19, 1999
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Tristan Tayag, Theodore Batchman
  • Easily manufacturable optical self-imaging waveguide
    Patent number: 5640474
    Abstract: An optical waveguide device based on the self-imaging (Talbot) effect is closed. An induced mode index difference between the device's multimode propagation (MMP) region and its surrounding host region forms a total internal reflection (TIR) interface. A pair of TIR interfaces result in lateral waveguide mode confinement and self-imaging formation. Also disclosed is an improved method of manufacturing the waveguide device.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: June 17, 1997
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Tristan Tayag