Patents by Inventor Xiaotao Hu

Xiaotao Hu 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).

  • Elliptical cladding polarization-maintaining large-mode-area gain fiber
    Patent number: 9739937
    Abstract: The present invention discloses an elliptical cladding polarization-maintaining large-mode-area gain fiber, structurally comprising a core of the elliptical cladding polarization-maintaining large-mode-area gain fiber, an inner cladding, an elliptical stress layer, a first outer cladding, a second outer cladding and a third outer cladding, wherein the inner cladding surrounds the core; the elliptical stress layer surrounds the inner cladding, and has an elliptical cross-sectional shape; the first outer cladding surrounds the elliptical stress layer; the second outer cladding surrounds the first outer cladding; and the third outer cladding surrounds the second outer cladding. As the birefringence of the elliptical cladding polarization-maintaining fiber is directly proportional to the ellipticity and the deposition of a stress-applying area occurs during the preform rod forming process, procedures of preform drilling and the like are eliminated, and the likelihood of preform contamination is greatly reduced.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: August 22, 2017
    Assignee: WUHAN RUIXIN SPECIAL OPTICAL FIBER CO., LTD.
    Inventors: Kanxian Wei, Rui Liu, Xiaotao Hu, You Li, Jianhua Bao, Yunli Li
  • ELLIPTICAL CLADDING POLARIZATION-MAINTAINING LARGE-MODE-AREA GAIN FIBER
    Publication number: 20170176675
    Abstract: The present invention discloses an elliptical cladding polarization-maintaining large-mode-area gain fiber, structurally comprising a core of the elliptical cladding polarization-maintaining large-mode-area gain fiber, an inner cladding, an elliptical stress layer, a first outer cladding, a second outer cladding and a third outer cladding, wherein the inner cladding surrounds the core; the elliptical stress layer surrounds the inner cladding, and has an elliptical cross-sectional shape; the first outer cladding surrounds the elliptical stress layer; the second outer cladding surrounds the first outer cladding; and the third outer cladding surrounds the second outer cladding. As the birefringence of the elliptical cladding polarization-maintaining fiber is directly proportional to the ellipticity and the deposition of a stress-applying area occurs during the preform rod forming process, procedures of preform drilling and the like are eliminated, and the likelihood of preform contamination is greatly reduced.
    Type: Application
    Filed: June 1, 2015
    Publication date: June 22, 2017
    Inventors: Kanxian WEI, Rui Liu, Xiaotao Hu, You Li, Jianhua Bao, Yunli Li
  • Fitness band with call function
    Patent number: D840041
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: February 5, 2019
    Inventors: Jianzhou Li, Xiaotao Hu, Wenjun Yan
  • Intelligent health wristband
    Patent number: D840043
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: February 5, 2019
    Inventors: Jianzhou Li, Xiaotao Hu, Wenjun Yan
  • Intelligent health wristband
    Patent number: D841171
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: February 19, 2019
    Inventors: Jianzhou Li, Xiaotao Hu, Wenjun Yan
  • Fitness wristband (V12)
    Patent number: D855813
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: August 6, 2019
    Inventor: Xiaotao Hu