Patents by Inventor Feng-Hua Tsai

Feng-Hua Tsai 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).

  • Fiber laser
    Patent number: 8897325
    Abstract: A fiber laser having a ring resonance path comprises a pump light source, a Yb-doped optical fiber and a light modulation unit. The pump light source emits a pump light. The Yb-doped optical fiber is coupled with the pump light. The light modulation unit includes a grating pair, a diaphragm and two reflective elements. The grating pair is coupled with the pump light. The diaphragm includes an aperture. The light transmitted by the grating pair partially passes through the aperture and reaches one of the reflective elements to become a reflective light, and the reflective light passes through the aperture and is transmitted through the grating pair and the other reflective element to be coupled back with the ring resonance path.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: November 25, 2014
    Assignee: National Tsing Hua University
    Inventors: Ci-Ling Pan, Alexey Zaytsev, Chih-Hsuan Lin, Yi-Jing You, Feng-Hua Tsai, Chi-Luen Wang
  • FIBER LASER
    Publication number: 20140341237
    Abstract: A fiber laser having a ring resonance path comprises a pump light source, a Yb-doped optical fiber and a light modulation unit. The pump light source emits a pump light. The Yb-doped optical fiber is coupled with the pump light. The light modulation unit includes a grating pair, a diaphragm and two reflective elements. The grating pair is coupled with the pump light. The diaphragm includes an aperture. The light transmitted by the grating pair partially passes through the aperture and reaches one of the reflective elements to become a reflective light, and the reflective light passes through the aperture and is transmitted through the grating pair and the other reflective element to be coupled back with the ring resonance path.
    Type: Application
    Filed: September 10, 2013
    Publication date: November 20, 2014
    Applicant: National Tsing Hua University
    Inventors: Ci-Ling PAN, Alexey ZAYTSEV, Chih-Hsuan LIN, Yi-Jing YOU, Feng-Hua TSAI, Chi-Luen WANG