Patents by Inventor Chai Leng Terence Wee

Chai Leng Terence Wee 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).

  • High speed waveguide photodetector
    Patent number: 6825542
    Abstract: The present invention relates to a semiconductor photodetector. The photodetector is a waveguide photodetector, which comprises: a waveguide (1,2,3) having a III-V ridge structure including an active layer (1); a semiconductor layer (4) deposited on top of the ridge structure; and, metal detector electrodes (not shown) on the surface of the higher refractive index semiconductor layer (4). The semiconductor layer (4) has a higher refractive index than the waveguide structure (1,2,3). The ridge structure is configured to widen along the length of the waveguide (1,2,3) such that light passing through the active layer (1) of the waveguide couples more efficiently up into the higher refractive index semiconductor layer (4).
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: November 30, 2004
    Assignee: Denselight Semiconductors Pte Ltd
    Inventors: Yee Loy Lam, Yuen Chuen Chan, Chai Leng Terence Wee
  • High speed waveguide photodetector
    Publication number: 20030173576
    Abstract: The present invention relates to a semiconductor photodetector. The photodetector is a waveguide photodetector, which comprises: a waveguide (1,2,3) having a III-V ridge structure including an active layer (1); a semiconductor layer (4) deposited on top of the ridge structure; and, metal detector electrodes (not shown) on the surface of the higher refractive index semiconductor layer (4). The semiconductor layer (4) has a higher refractive index than the waveguide structure (1,2,3). The ridge structure is configured to widen along the length of the waveguide (1,2,3) such that light passing through the active layer (1) of the waveguide couples more efficiently up into the higher refractive index semiconductor layer (4).
    Type: Application
    Filed: January 24, 2003
    Publication date: September 18, 2003
    Applicant: Denselight Semiconductors PTE LTD
    Inventors: Yee Loy Lam, Yuen Chuen Chan, Chai Leng Terence Wee