Patents by Inventor Keon Joo Park

Keon Joo Park 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).

  • Multi-wavelength locking method and apparatus for wavelength division multiplexing (WDM) optical communication system
    Publication number: 20020048063
    Abstract: Disclosed is a multi-wavelength locking method for a wavelength division multiplexing (WDM) optical communication network, and in particular, a multi-wavelength locking method and apparatus for a WDM optical communication system that can lock wavelengths of optical signals by producing pilot tones by applying a sine-wave current to a plurality of transmission lasers having different wavelengths, passing the optical signal through a Fabry-Perot etalon filter, and then Fourier-transforming the filtered optical signal.
    Type: Application
    Filed: March 7, 2001
    Publication date: April 25, 2002
    Inventors: Yeun Chol Jung, Keon Joo Park, Seung Gyun Shin, Ho Chul Ji