Patents by Inventor Liew-Chuang Chui

Liew-Chuang Chui 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).

  • Methods for forming index guided vertical cavity surface emitting lasers
    Patent number: 6852558
    Abstract: Planar index guided vertical cavity surface emitting laser (PIG VCSEL) utilizes index guiding to provide improved optical confinement and proton implantation to improve current confinement. Index guiding is achieved by etching index guide openings (holes or partial ridges) around the optical confinement region and may be adjusted by varying the etched volume of the index guide openings (holes and partial ridges). The top contact surface area is increased in the PIG VCSEL thereby lowering contact and device resistance to improve VCSEL performance further. The PIG VCSEL is a substantially planarized device for ease of manufacture.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: February 8, 2005
    Assignee: JDS Uniphase Corporation
    Inventors: Hsing-Chung Lee, Liew-Chuang Chui
  • Index guided vertical cavity surface emitting lasers
    Patent number: 6822993
    Abstract: Planar index guided vertical cavity surface emitting laser (PIG VCSEL) utilizes index guiding to provide improved optical confinement and proton implantation to improve current confinement. Index guiding is achieved by etching index guide openings (holes or partial ridges) around the optical confinement region and may be adjusted by varying the etched volume of the index guide openings (holes and partial ridges). The top contact surface area is increased in the PIG VCSEL thereby lowering contact and device resistance to improve VCSEL performance further. The PIG VCSEL is a substantially planarized device for ease of manufacture.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: November 23, 2004
    Assignee: JDS Uniphase Corporation
    Inventors: Hsing-Chung Lee, Liew-Chuang Chui
  • Method and apparatus for planar index guided vertical cavity surface emitting lasers
    Patent number: 6577658
    Abstract: Planar index guided vertical cavity surface emitting laser (PIG VCSEL) utilizes index guiding to provide improved optical confinement and proton implantation to improve current confinement. Index guiding is achieved by etching index guide openings (holes or partial ridges) around the optical confinement region and may be adjusted by varying the etched volume of the index guide openings (holes and partial ridges). The top contact surface area is increased in the PIG VCSEL thereby lowering contact and device resistance to improve VCSEL performance further. The PIG VCSEL is a substantially planarized device for ease of manufacture.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: June 10, 2003
    Assignee: E20 Corporation, Inc.
    Inventors: Hsing-Chung Lee, Liew-Chuang Chui