Patents by Inventor Chel-Han Kim

Chel-Han Kim 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).

  • Patent number: 6181467
    Abstract: A multi-stage optical fiber amplifier having a high gain, a high output power and a low noise figure, without limiting a gain bandwidth includes at least two stages of cascade connected optical fiber amplifiers. A synchronized etalon filter is disposed between the optical fiber amplifiers. The etalon filter has a resonant frequency matched with a standard frequency of a WDM (Wavelength Division Multiplexing) system using the optical fiber amplifiers.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: January 30, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-Chel Jung, Chel-Han Kim