Patents Examined by Kaitlyn E Kidwell
  • Patent number: 12247856
    Abstract: A micro-displacement measurement system having a picometer scale resolution and a measurement method. The measurement system comprises a probe module, a demodulation optical path module, a static lock-in amplification module, an upper computer module, and a micro-displacement drive module. The probe module comprises a measurement FBG sensor, a matching FBG sensor, a precision stainless steel needle tube, and an external support; the demodulation optical path module comprises an ASE broadband light source, a first circulator, a second circulator, and an InGaAs photodetector; the upper computer module comprises a data acquisition card and a computer; and the micro-displacement drive module comprises a piezoelectric ceramic nano-positioner, a piezoelectric ceramic driver, a three-dimensional precision micro-motion platform.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: March 11, 2025
    Assignee: HEFEI UNIVERSITY OF TECHNOLOGY
    Inventors: Fangfang Liu, Xinyang Liu, Wei Zhou, Xin Ran, Hongli Li, Haojie Xia
  • Patent number: 12222286
    Abstract: An optical fiber multi-parameter sensing system and method are provided. The optical fiber multi-parameter sensing system comprises a light source, an optical circulator, a fiber-tip probe sensor and an optical spectrum analyzer, wherein the fiber-tip probe sensor can be placed into an analyte without changing the characteristics of the analyte. The variation of a bulk parameter that is a bulk refractive index of bulk environment around the fiber-tip probe sensor and a surface parameter which is a thickness of surface dielectric layer of the fiber-tip probe sensor can be determined simultaneously by monitoring the changing of resonance intensity and resonance wavelength of a single fiber-tip leaky mode resonance. The sensing system optionally configured such that multiple parameters in the analyte around the fiber-tip probe sensor can be obtained by detecting a single resonance peak.
    Type: Grant
    Filed: September 4, 2022
    Date of Patent: February 11, 2025
    Assignee: WENZHOU UNIVERSITY
    Inventors: Zhihong Li, Xianxin Yang, Fei Wang, Haiyong Zhu, Xinxin Jin, Yanmin Duan