Patents by Inventor Yuqiao Liu

Yuqiao Liu 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).

  • V-groove dual fiber collimator for DWDM multiplexor/demultiplexor
    Patent number: 6246812
    Abstract: A V-groove dual fiber collimator (1) including an optical lens (10) and a V-groove dual fiber ferrule means (12) fixed with each other. The ferrule means (12) includes a V-groove chip (14) and a cover chip (20) commonly enclosed by a protective guiding sleeve (22) wherein two pigtail fibers (24, 26) are respectively received within the corresponding grooves (16) of the V-groove chip (14). The V-groove ferrule means (12) is itself fixed by adhering its own internal components (14, 20, 22) and the embedded fibers (24, 26), and also fixed to the lens (10).
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: June 12, 2001
    Assignee: Alliance Fiber Optics Products, Inc.
    Inventors: Yuqiao Liu, Peter C. Chang