1．School of Physics and Advanced Energy，Henan University of Technology，Zhengzhou 450001，China;2．College of Information Science and Engineering，Henan University of Technology，Zhengzhou 450001，China
For the two cases of uniform and Gaussian distributions of light intensity in the emitted light field，a quantitative relationship between the sensor output and displacement was derived．Subsequently，a theoretical model of the fiber optic displacement sensor was established，and this model was subjected to simulation and analysis．Ｒeflective surfaces were fabricated using materials such as iron，copper，aluminum，and mirror stickers．
Through experimental verification，the effectiveness of the theoretical model was validated． This research provides a theoretical foundation for the development of fiber optic sensors and for experimental teaching in
