Patents by Inventor Ki-Woon Na

Ki-Woon Na 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).

  • Passive wavelength division multiplexing device for automatic wavelength locking and system thereof
    Patent number: 9106361
    Abstract: The present invention relates to a passive wavelength division multiplexing device for automatic wavelength locking and a system thereof including an optical multiplexer, an optical filter, an integrated optical receiver monitor, and a tunable optical transmitter. Through wavelength locking that adjusts a wavelength of an optical signal, which changes according to an external environment such as a temperature change, into a wavelength of an optical signal having the maximum optical intensity, communication quality may be maximized by securing a stable communication channel, a locking time and a communication channel setting time may be reduced, and more robust locking may be guaranteed.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: August 11, 2015
    Assignees: SOLID, INC., SOLID SYSTEMS, INC., CHEMOPTICS, INC.
    Inventors: Ki-Woon Na, Woo-Jin Lee, Kwon-Hoon Han, Seung-Rog Choi, Tae-Hyeong Kim, Young-Ouk Noh
  • PASSIVE WAVELENGTH DIVISION MULTIPLEXING DEVICE FOR AUTOMATIC WAVELENGTH LOCKING AND SYSTEM THEREOF
    Publication number: 20130315585
    Abstract: The present invention relates to a passive wavelength division multiplexing device for automatic wavelength locking and a system thereof including an optical multiplexer, an optical filter, an integrated optical receiver monitor, and a tunable optical transmitter. Through wavelength locking that adjusts a wavelength of an optical signal, which changes according to an external environment such as a temperature change, into a wavelength of an optical signal having the maximum optical intensity, communication quality may be maximized by securing a stable communication channel, a locking time and a communication channel setting time may be reduced, and more robust locking may be guaranteed.
    Type: Application
    Filed: November 30, 2010
    Publication date: November 28, 2013
    Applicants: SOLID, INC., CHEMOPTICS INC., SOLID SYSTEMS, INC.
    Inventors: Ki-Woon Na, Woo-Jin Lee, Kwon-Hoon Han, Seung-Rog Choi, Tae-Hyeong Kim, Young-Ouk Noh