Patents by Inventor Ruey-Fang Shyu

Ruey-Fang Shyu 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).

  • Tunable optical integrated element using liquid crystal as active layer
    Patent number: 7209212
    Abstract: The present invention discloses a tunable optical integrated element using liquid crystal as an active layer, which is applied to filters, couplers or optical add/drop multiplexer. The present invention includes a layer of liquid crystal as an active layer, a first waveguide with grating and a second waveguide, an isolation layer, a pair of electrodes. By applying the external voltage to control the direction of the liquid crystal, the refractive index of the waveguide changes in accordance with the modulation of the electric field. Thus invention has the features of simple structure, easy assembling, lower cost and integrating ability.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: April 24, 2007
    Assignee: China Institute of Technology
    Inventors: Wei-Ching Chuang, Ruey-Fang Shyu, Hsiao-Ping Liang, Kun-Yi Lee
  • Tunable optical integrated element using liquid crystal as active layer
    Publication number: 20060055865
    Abstract: The present invention discloses a tunable optical integrated element using liquid crystal as an active layer, which is applied to filters, couplers or optical add/drop multiplexer. The present invention includes a layer of liquid crystal as an active layer, a first waveguide with grating and a second waveguide, an isolation layer, a pair of electrodes. By applying the external voltage to control the direction of the liquid crystal, the refractive index of the waveguide changes in accordance with the modulation of the electric field. Thus invention has the features of simple structure, easy assembling, lower cost and integrating ability.
    Type: Application
    Filed: September 15, 2004
    Publication date: March 16, 2006
    Inventors: Wei-Ching Chuang, Ruey-Fang Shyu, Hsiao-Ping Liang, Kun-Yi Lee