Patents by Inventor XIANXIANG FEI

XIANXIANG FEI 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).

  • Michelson interference optical fiber temperature sensor for detecting contrast change of fringes
    Patent number: 11448558
    Abstract: A Michelson interference optical fiber temperature sensor for detecting fringe contrast change is provided. It includes a light source, an optical fiber coupler connected to a first optical fiber and a second optical fiber, a coarse wavelength division multiplexer, a first photodetector, a second photodetector, a display device, and a processing circuit connected to the display device. The light source, optical fiber coupler and coarse wavelength division multiplexer are connected sequentially in that order. The coarse wavelength division multiplexer is connected to the first photodetector and the second photodetector individually. The first photodetector and the second photodetector are connected to the processing circuit. An end of the first optical fiber or the second optical fiber facing away from the optical fiber coupler is connected to a semiconductor. It has advantages of simple and fast manufacturing process, safe and reliable sensor, stable signal, low cost, high sensitivity and high precision.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: September 20, 2022
    Assignee: GUANGDONG OCEAN UNIVERSITY
    Inventors: Wenhua Wang, Wenqing Shi, Zhengye Xiong, Weina Wu, Yansheng Zhang, Yuanzheng Luo, Yuping Xie, Xianxiang Fei, Jiang Huang, Xuehui Lai, Chuhong Wang
  • MICHELSON INTERFERENCE OPTICAL FIBER TEMPERATURE SENSOR FOR DETECTING CONTRAST CHANGE OF FRINGES
    Publication number: 20220268641
    Abstract: A Michelson interference optical fiber temperature sensor for detecting fringe contrast change is provided. It includes a light source, an optical fiber coupler connected to a first optical fiber and a second optical fiber, a coarse wavelength division multiplexer, a first photodetector, a second photodetector, a display device, and a processing circuit connected to the display device. The light source, optical fiber coupler and coarse wavelength division multiplexer are connected sequentially in that order. The coarse wavelength division multiplexer is connected to the first photodetector and the second photodetector individually. The first photodetector and the second photodetector are connected to the processing circuit. An end of the first optical fiber or the second optical fiber facing away from the optical fiber coupler is connected to a semiconductor. It has advantages of simple and fast manufacturing process, safe and reliable sensor, stable signal, low cost, high sensitivity and high precision.
    Type: Application
    Filed: May 11, 2022
    Publication date: August 25, 2022
    Inventors: WENHUA WANG, WENQING SHI, ZHENGYE XIONG, WEINA WU, YANSHENG ZHANG, YUANZHENG LUO, YUPING XIE, XIANXIANG FEI, JIANG HUANG, XUEHUI LAI, CHUHONG WANG