Patents Assigned to K-JIST
  • Optical fiber and planar waveguide for achieving a substantially uniform optical attenuation
    Patent number: 6757473
    Abstract: The present invention relates to an optical fiber and a planar waveguide for achieving a uniform optical attenuation, which comprises a core co-doped with a first metal ions having an optical absorption coefficient of a negative slope in a particular wavelength band and a second metal ions having an optical absorption coefficient of a positive slope in a predetermined wavelength band.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: June 29, 2004
    Assignees: Optonest Corporation, K-JIST
    Inventors: Won-Taek Han, Jin-Haing Kim