Patents by Inventor Jie Hyun Lee

Jie Hyun Lee 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).

  • ATHERMAL EXTERNAL CAVITY LASER
    Publication number: 20100014545
    Abstract: Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 21, 2010
    Inventors: Jie Hyun Lee, Mahn Yong Park, Geon Jeong, Chul Young Kim, Seung Hyun Cho, Woo Ram Lee, Byoung Whi Kim
  • Athermal external cavity laser
    Patent number: 7580441
    Abstract: Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient, wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than the portion of the cladding surrounding the portion of the core where the Bragg grating is not formed, and the thermosetting polymer the negative thermooptical coefficient surrounds the cladding.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: August 25, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jie Hyun Lee, Mahn Yong Park, Geon Jeong, Chul Young Kim, Seung Hyun Cho, Woo Ram Lee, Byoung Whi Kim