Patents by Inventor Byung-Yong Kang

Byung-Yong Kang 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).

  • Apparatus and method for OLT and ONU for wavelength agnostic wavelength-division multiplexed passive optical networks
    Patent number: 8644711
    Abstract: In a Wavelength-Division-Multiplexed Passive Optical Network (WDM-PON) utilizing a conventional downstream optical signal reusing method, there is an inventory problem that different optical transmitter types need to be provided for the operation, management, replacement, etc. of a system. A WDM-PON system according to the present invention, includes: a seed light (SL) unit generating a seed light whose wavelength intervals and center wavelengths are adjusted using at least one seed light source; an optical line terminal (OLT) receiving the wavelength-multiplexed seed light from the seed light unit, transmitting a downstream optical signal to a subscriber of the WDM-PON, and receiving a upstream optical signal from the subscriber; and an optical network unit (ONU) receiving the downstream optical signal from the OLT, flattening and modulating the downstream optical signal with upstream data so that the downstream optical signal is reused for carrying upstream data.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: February 4, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byoung-Whi Kim, Manyong Park, Woo-Ram Lee, Bong-Tae Kim, Seung-Hyun Cho, Jie-Hyun Lee, Geon Jeong, Chulyoung Kim, Dae-Ung Kim, Byung-Yong Kang
  • APPARATUS AND METHOD FOR OLT AND ONU FOR WAVELENGTH AGNOSTIC WAVELENGTH-DIVISION MULTIPLEXED PASSIVE OPTICAL NETWORKS
    Publication number: 20110026923
    Abstract: In a Wavelength-Division-Multiplexed Passive Optical Network (WDM-PON) utilizing a conventional downstream optical signal reusing method, there is an inventory problem that different optical transmitter types need to be provided for the operation, management, replacement, etc. of a system. A WDM-PON system according to the present invention, includes: a seed light (SL) unit generating a seed light whose wavelength intervals and center wavelengths are adjusted using at least one seed light source; an optical line terminal (OLT) receiving the wavelength-multiplexed seed light from the seed light unit, transmitting a downstream optical signal to a subscriber of the WDM-PON, and receiving a upstream optical signal from the subscriber; and an optical network unit (ONU) receiving the downstream optical signal from the OLT, flattening and modulating the downstream optical signal with upstream data so that the downstream optical signal is reused for carrying upstream data.
    Type: Application
    Filed: July 6, 2007
    Publication date: February 3, 2011
    Inventors: Byoung-Whi Kim, Manyong Park, Woo-Ram Lee, Bong-Tae Kim, Seung-Hyun Cho, Jie-Hyun Lee, Geon Jeong, Chulyoung Kim, Dae-Ung Kim, Byung-Yong Kang