Patents by Inventor BINGFENG CAI

BINGFENG CAI 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: 10295737
    Abstract: The present invention relates to the field of single-mode optical fibers and discloses a bending-insensitive, radiation-resistant single-mode optical fiber, sequentially including from inside to outside: a core, inner claddings, and an outer cladding, all made from a quartz material. The inner claddings comprise, from inside to outside, a first fluorine-doped inner cladding and a second fluorine-doped inner cladding. The core and the first fluorine-doped inner cladding are not doped with germanium. The respective concentrations of other metal impurities and phosphorus are less than 0.1 ppm. By mass percent, the core has a fluorine dopant content of 0-0.45% and a chlorine content of 0.01-0.10%; the first fluorine-doped inner cladding has a fluorine concentration of 1.00-1.55%; and the second fluorine-doped inner cladding has a fluorine concentration of 3.03-5.00%.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 21, 2019
    Assignee: FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO., LTD
    Inventors: Qi Mo, Lijie Huang, Huang Yu, Cheng Liu, Wen Chen, Zhiqiang Yu, Dongxiang Wang, Bingfeng Cai, Liming Chen, Huiping Shi
  • Publication number: 20180299615
    Abstract: The present invention relates to the field of single-mode optical fibers and discloses a bending-insensitive, radiation-resistant single-mode optical fiber, sequentially including from inside to outside: a core, inner claddings, and an outer cladding, all made from a quartz material. The inner claddings comprise, from inside to outside, a first fluorine-doped inner cladding and a second fluorine-doped inner cladding. The core and the first fluorine-doped inner cladding are not doped with germanium. The respective concentrations of other metal impurities and phosphorus are less than 0.1 ppm. By mass percent, the core has a fluorine dopant content of 0-0.45% and a chlorine content of 0.01-0.10%; the first fluorine-doped inner cladding has a fluorine concentration of 1.00-1.55%; and the second fluorine-doped inner cladding has a fluorine concentration of 3.03-5.00%.
    Type: Application
    Filed: October 21, 2016
    Publication date: October 18, 2018
    Applicant: FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO., LTD
    Inventors: Qi MO, Lijie HUANG, Huang YU, Cheng LIU, Wen CHEN, Zhiqiang YU, Dongxiang WANG, Bingfeng CAI, Liming CHEN, Huiping SHI
  • Patent number: 9739936
    Abstract: A low-loss few-mode fiber relates to the technical field of optical communications and related sensing devices, and includes, from inside to outside, a core layer (1), a fluorine-doped quartz inner cladding (2), a fluorine-doped quartz second core layer (3), a fluorine-doped quartz depressed cladding (4) and a fluorine-doped quartz outer cladding (5); germanium element is not doped within the core layer (1), the refractive index of the core layer (1) is in gradient distribution, and the distribution is a power-exponent distribution; the maximum value of difference in relative refractive index between the core layer (1) and the fluorine-doped quartz inner cladding (2) is 0.3% to 0.9%; the relative refractive index difference of the fluorine-doped quartz inner cladding (2) with respect to synthetic quartz is ?0.3% to ?0.5%; the difference in relative refractive index between the fluorine-doped quartz second core layer (3) and the fluorine-doped quartz inner cladding (2) is 0.05% to 0.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: August 22, 2017
    Assignees: WUHAN RESEARCH INSTITUTE OF POSTS AND TELECOMMUNICATIONS, FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO., LTD.
    Inventors: Qi Mo, Huang Yu, Wen Chen, Cheng Du, Zhiqiang Yu, Dongxiang Wang, Bingfeng Cai
  • Publication number: 20170115450
    Abstract: A low-loss few-mode fiber relates to the technical field of optical communications and related sensing devices, and includes, from inside to outside, a core layer (1), a fluorine-doped quartz inner cladding (2), a fluorine-doped quartz second core layer (3), a fluorine-doped quartz depressed cladding (4) and a fluorine-doped quartz outer cladding (5); germanium element is not doped within the core layer (1), the refractive index of the core layer (1) is in gradient distribution, and the distribution is a power-exponent distribution; the maximum value of difference in relative refractive index between the core layer (1) and the fluorine-doped quartz inner cladding (2) is 0.3% to 0.9%; the relative refractive index difference of the fluorine-doped quartz inner cladding (2) with respect to synthetic quartz is ?0.3% to ?0.5%; the difference in relative refractive index between the fluorine-doped quartz second core layer (3) and the fluorine-doped quartz inner cladding (2) is 0.05% to 0.
    Type: Application
    Filed: November 3, 2015
    Publication date: April 27, 2017
    Inventors: QI MO, HUANG YU, WEN CHEN, CHENG DU, ZHIQIANG YU, DONGXIANG WANG, BINGFENG CAI