Patents by Inventor Gwang-Hoon Jang

Gwang-Hoon Jang 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).

  • Environmentally stable optical fiber mode-locked laser generating device having an achromatic quarter wave plate
    Patent number: 8908721
    Abstract: An Environmentally stable optical fiber mode-locked laser generating device having an achromatic quarter wave plate is disclosed. An optical fiber unit is formed of a polarization maintaining (PM) optical fiber, and a Bragg grating is formed on a first region from one end in direction to the other end, a gain material is doped on a core of a remaining second region. An optical coupling unit provides a pump laser input to one end of the optical fiber unit, and outputs a laser input from the optical fiber unit. A lens unit converts a laser output from the other end of the optical fiber unit and focuses the laser on a certain regime.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: December 9, 2014
    Assignee: Korea University Holdings Co., Ltd.
    Inventors: Tai-Hyun Yoon, Gwang-Hoon Jang
  • ENVIRONMENTALLY STABLE OPTICAL FIBER MODE-LOCKED LASER GENERATING DEVICE HAVING AN ACHROMATIC QUARTER WAVE PLATE
    Publication number: 20120320934
    Abstract: An Environmentally stable optical fiber mode-locked laser generating device having an achromatic quarter wave plate is disclosed. An optical fiber unit is formed of a polarization maintaining (PM) optical fiber, and a Bragg grating is formed on a first region from one end in direction to the other end, a gain material is doped on a core of a remaining second region. An optical coupling unit provides a pump laser input to one end of the optical fiber unit, and outputs a laser input from the optical fiber unit. A lens unit converts a laser output from the other end of the optical fiber unit and focuses the laser on a certain regime.
    Type: Application
    Filed: December 15, 2010
    Publication date: December 20, 2012
    Applicant: FEMTOLIGHT CO., LTD.
    Inventors: Tai-Hyun Yoon, Gwang-Hoon Jang