Patents by Inventor Daoyu Lei

Daoyu Lei 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).

  • Large mode field active optical fiber and manufacture method thereof
    Patent number: 9014523
    Abstract: A large mode field active optical fiber and manufacture method thereof is provided. The large mode field active optical fiber is formed by drawing a fiber core (1), a quartz glass internal cladding (2), a quartz glass outer cladding (3), and a coating (4). The quartz glass internal cladding (2), the quartz glass outer cladding (3), and the coating (4) are sequentially coated on the outer surface of the fiber core (1). The fiber core (1) is formed by depositing, melting, and shrinking the tetrachlorosilane doped with rare earth ions in a quartz glass tube. The refractive index of the fiber core (1) is a graded refractive index, and the section parameter a thereof is 1???3. The appearance of the quartz glass inner cladding (2) is regular multi-prism shaped.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: April 21, 2015
    Assignee: Fiberhome Telecommunications Technologies Co., Ltd.
    Inventors: Wei Chen, Shiyu Li, Daoyu Lei, Dongxiang Wang, Wenyong Luo, Wenjun Huang, Fuming Hu, Peng Hu
  • LARGE MODE FIELD ACTIVE OPTICAL FIBER AND MANUFACTURE METHOD THEREOF
    Publication number: 20120263428
    Abstract: A large mode field active optical fiber and manufacture method thereof is provided. The large mode field active optical fiber is formed by drawing a fiber core (1), a quartz glass internal cladding (2), a quartz glass outer cladding (3), and a coating (4). The quartz glass internal cladding (2), the quartz glass outer cladding (3), and the coating (4) are sequentially coated on the outer surface of the fiber core (1). The fiber core (1) is formed by depositing, melting, and shrinking the tetrachlorosilane doped with rare earth ions in a quartz glass tube. The refractive index of the fiber core (1) is a graded refractive index, and the section parameter a thereof is 1???3. The appearance of the quartz glass inner cladding (2) is regular multi-prism shaped.
    Type: Application
    Filed: November 24, 2010
    Publication date: October 18, 2012
    Inventors: Wei Chen, Shiyu Li, Daoyu Lei, Dongxiang Wang, Wenyong Luo, Wenjun Huang, Fuming Hu, Peng Hu