Patents by Inventor Dongwhan Ahn

Dongwhan Ahn 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: 6968104
    Abstract: An optical network, in the form of a 1×2N splitter, includes a series of interconnected distribution devices of varying size. Each distribution device may be an H-tree distribution device having an input waveguide and four output waveguides that provide in-phase, equal intensity copies of a signal received on the input waveguide. The network may include a primary H-tree distribution device and a plurality of secondary H-tree distribution devices each of a smaller size than the primary H-tree distribution device. Individual H-tree distribution devices may have a first stage Y-branch and a second stage Y-branch each of different radii of curvature. Further still, progressively smaller radius of curvature Y-branches may be used to form the 1×2N splitter, where N may be an even or odd integer.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: November 22, 2005
    Assignees: Intel Corporation, Massachusetts Institute of Technology
    Inventors: Jun-Fei Zheng, Ian Young, Dongwhan Ahn
  • Publication number: 20040156634
    Abstract: An optical network, in the form of a 1×2N splitter, includes a series of interconnected distribution devices of varying size. Each distribution device is an H-tree distribution device having an input waveguide and four output waveguides that provide in-phase, equal intensity copies of a signal received on the input waveguide. The H-tree distribution devices may be formed from three interconnected Y-branches, each functioning as a 50/50 splitter, for example. The network includes H-tree distribution devices of different size. In an example form, a primary H-tree distribution device receives the input signal and routes it to a plurality of secondary H-tree distribution devices each of a smaller size than the primary H-tree distribution device.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 12, 2004
    Inventors: Jun-Fei Zheng, Ian Young, Dongwhan Ahn