Patents by Inventor Yudong Jia

Yudong Jia 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).

  • Method for measuring the strain of material using short cavity fiber laser
    Patent number: 9016105
    Abstract: A method for measuring the strain of material using a short cavity fiber laser, includes steps of: a) arranging the short cavity fiber laser, which laser comprises sequentially coupled laser diode pumping source, a wavelength division multiplexer, a fiber bragg grating, an active fiber and a loop mirror; b) fixing the short cavity fiber laser on the material whose strain will be measured, and matching the stretching direction of the fiber of the short cavity fiber laser with the direction of the strain produced by the material to be measured; c) measuring the drift amount of longitudinal mode output by the short cavity fiber laser; and d) calculating and obtaining the strain of the material to be measured.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: April 28, 2015
    Assignee: Beijing Information Science & Technology University
    Inventors: Lianqing Zhu, Fei Luo, Wei He, Mingli Dong, Yinmin Zhang, Yudong Jia
  • METHOD FOR MEASURING THE STRAIN OF MATERIAL USING SHORT CAVITY FIBER LASER
    Publication number: 20150020568
    Abstract: A method for measuring the strain of material using a short cavity fiber laser, includes steps of: a) arranging the short cavity fiber laser, which laser comprises sequentially coupled laser diode pumping source, a wavelength division multiplexer, a fiber bragg grating, an active fiber and a loop mirror; b) fixing the short cavity fiber laser on the material whose strain will be measured, and matching the stretching direction of the fiber of the short cavity fiber laser with the direction of the strain produced by the material to be measured; c) measuring the drift amount of longitudinal mode output by the short cavity fiber laser; and d) calculating and obtaining the strain of the material to be measured.
    Type: Application
    Filed: October 9, 2013
    Publication date: January 22, 2015
    Applicant: Beijing Information Science & Technology University
    Inventors: Lianqing Zhu, Fei Luo, Wei He, Mingli Dong, Yinmin Zhang, Yudong Jia
  • Method for measuring magnetic induction intensity of magnetic field using short cavity fiber laser
    Patent number: 8896302
    Abstract: A method for measuring magnetic induction intensity of a magnetic field using a short cavity fiber laser, includes the steps of: a) arranging the short cavity fiber laser, where the short cavity laser has sequentially coupled laser diode pumping source, a wavelength division multiplexer, a fiber Bragg grating, an active optical fiber and a loop mirror; b) fixing the short cavity fiber laser on a magnetostrictive material; c) disposing the short cavity fiber laser and the magnetostrictive material in the magnetic field to be measured, and matching the stretching direction of the magnetostrictive material with the direction of the magnetic field to be measured; d) measuring the drift amount of longitudinal mode output by the short cavity fiber laser; and e) calculating the magnetic induction intensity of the magnetic field to be measured.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: November 25, 2014
    Assignee: Beijing Information Science & Technology University
    Inventors: Lianqing Zhu, Fei Luo, Yinmin Zhang, Wei He, Mingli Dong, Xiaoping Lou, Yudong Jia