Patents by Inventor Euy Sik Yoon

Euy Sik Yoon 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: 6454468
    Abstract: An optical structure and a method of manufacturing a laser diode chip. The optical structure includes a silicon substrate, an optical fiber fixed to that substrate, and a laser diode chip. Grooves are formed in the optical fiber and the laser diode chip. Those grooves are used for aligning and positioning the optical fiber relative to the laser diode chip. The laser diode chip is manufactured by vapor-depositing a nitride thin film (Si3N4) on a laminated wafer comprised of n-type InP layers, p-type Inp layers, and InGaAs layer. Then, etching an InGaAs layer using a solution of sulfuric acid, hydrogen peroxide, and distilled water after opening an etching window to form a V-mesa and V-grooves; etching an InP layer using a hydrochloric acid solution; vapor-depositing a nitride thin film (SiNx), opening an electrode forming window to form electrodes on the wafer, and forming p-type and n-type electrodes the wafer.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: September 24, 2002
    Assignee: LG. Cable & Machinery, Ltd.
    Inventors: Euy Sik Yoon, Hong Jun Jun, Ki Chul Shin, Jun Seok Song, Bon Jo Koo, Ho Sung Lee
  • Publication number: 20020039805
    Abstract: The present invention relates an optical element used in the field of optical communication and a method for aligning an optical fiber to connect an external optical communication system to the optical element.
    Type: Application
    Filed: July 30, 2001
    Publication date: April 4, 2002
    Inventors: Euy Sik Yoon, Hong Jun Jun, Ki Chul Shin, Jun Seok Song, Bon Jo Koo, Ho Sung Lee
  • Patent number: 6300151
    Abstract: The present invention relates an optical element used in the field of optical communication and a method for aligning an optical fiber to connect an external optical communication system to the optical element.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: October 9, 2001
    Assignee: LG Cable & Machinery, Ltd.
    Inventors: Euy Sik Yoon, Hong Jun Jun, Ki Chul Shin, Jun Seok Song, Bon Jo Koo, Ho Sung Lee