Patents by Inventor Joon-Sang Yu

Joon-Sang Yu 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).

  • Distributed feedback laser
    Patent number: 7110429
    Abstract: A distributed feedback laser comprising a guide layer is disclosed and includes a plurality of waveguides connected in a stepped multi-branch structure, the guide layer serving as a transmission medium for light having a predetermined wavelength, and an active layer, formed on the guide layer, for oscillating light, wherein light is branched according to a predetermined ratio while proceeding from a higher waveguide to a lower waveguide within the guide layer.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: September 19, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joon-Sang Yu
  • Distributed feedback laser
    Publication number: 20040161007
    Abstract: A distributed feedback laser comprising a guide layer is disclosed and includes a plurality of waveguides connected in a stepped multi-branch structure, the guide layer serving as a transmission medium for light having a predetermined wavelength, and an active layer, formed on the guide layer, for oscillating light, wherein light is branched according to a predetermined ratio while proceeding from a higher waveguide to a lower waveguide within the guide layer.
    Type: Application
    Filed: July 28, 2003
    Publication date: August 19, 2004
    Inventor: Joon-Sang Yu