Patents by Inventor Junlei Xia

Junlei Xia 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).

  • Electro-optic effect based optical voltage transformer
    Patent number: 9121872
    Abstract: An electro-optic effect based optical voltage transformer comprises an optical voltage sensor head and an electrical unit, wherein the electrical unit comprises an optical closed-loop feedback control unit and a signal processing unit, the optical closed-loop feedback control unit is connected to the optical voltage sensor head and the optical voltage sensor head is connected to the signal processing unit. In this invention, the light source output power is more stable, the light source center wavelength drift is effectively controlled and the output power coastdown caused by light source aging is prevented; the optical power fluctuation of the optical polarization caused by factors such as temperature, optical fiber vibration, etc., is eliminated, which is conductive to stability and reliability of the optical system; the accuracy of data is improved.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: September 1, 2015
    Assignee: BEIJING AEROSPACE TIMES OPTICAL-ELECTRONIC TECHNOLOGY CO. LTD.
    Inventors: Wei Wang, Zhixin Zhang, Jinquan Tan, Xuefeng Wang, Junlei Xia
  • ELECTRO-OPTIC EFFECT BASED OPTICAL VOLTAGE TRANSFORMER
    Publication number: 20130076338
    Abstract: An electro-optic effect based optical voltage transformer comprises an optical voltage sensor head and an electrical unit, wherein the electrical unit comprises an optical closed-loop feedback control unit and a signal processing unit, the optical closed-loop feedback control unit is connected to the optical voltage sensor head and the optical voltage sensor head is connected to the signal processing unit. In this invention, the light source output power is more stable, the light source center wavelength drift is effectively controlled and the output power coastdown caused by light source aging is prevented; the optical power fluctuation of the optical polarization caused by factors such as temperature, optical fiber vibration, etc., is eliminated, which is conductive to stability and reliability of the optical system; the accuracy of data is improved.
    Type: Application
    Filed: October 31, 2011
    Publication date: March 28, 2013
    Applicant: BEIJING AEROSPACE TIMES OPTICAL-ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Wei Wang, Zhixin Zhang, Jinquan Tan, Xuefeng Wang, Junlei Xia