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Acta Optica Sinica, Volume. 45, Issue 3, 0307002(2025)

Noise Suppression of Medium-Fineness Fiber Optic Fabry‒Perot Sensor Based on White Light Interference Technology

Fuyin Wang1,3,4, Lingling Zhang2, Ruize Lou1, Ji Xia1,4, Zheng Liu1, Qiong Yao1,4, Hu Zhang1, Qi Wang2, Lei Feng3, and Hu Chen1,4、*
Author Affiliations
  • 1College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073,Hunan , China
  • 2College of Information Science and Engineering, Northeastern University, Shenyang 110004, Liaoning , China
  • 3Hunan Institute of Advanced Technology, Changsha 410073, Hunan , China
  • 4Hunan Key Laboratory for Marine Detection Technology, Changsha 410073, Hunan , China
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    Figures & Tables(8)
    Spectra of medium-fineness fiber optic F-P sensor. (a) Single-frame spectrum; (b) spectrum after FFT processing

    Fig. 1. Spectra of medium-fineness fiber optic F-P sensor. (a) Single-frame spectrum; (b) spectrum after FFT processing

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    Power density ratio of the eigen-peaks varied with fineness

    Fig. 2. Power density ratio of the eigen-peaks varied with fineness

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    Power density ratio of eigen-peaks varied with initial phase

    Fig. 3. Power density ratio of eigen-peaks varied with initial phase

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    Suppression of additive noise by weighted average method changed with fineness

    Fig. 4. Suppression of additive noise by weighted average method changed with fineness

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    Suppression of additive noise by weighted average method changed with fineness

    Fig. 5. Suppression of additive noise by weighted average method changed with fineness

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    Weighted average PSD suppression effect varied with k1 at different finenesses

    Fig. 6. Weighted average PSD suppression effect varied with k1 at different finenesses

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    Diagram of experimental setup

    Fig. 7. Diagram of experimental setup

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    Experimental results of phase noise level of medium-fineness fiber optic F-P sensor

    Fig. 8. Experimental results of phase noise level of medium-fineness fiber optic F-P sensor

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    Fuyin Wang, Lingling Zhang, Ruize Lou, Ji Xia, Zheng Liu, Qiong Yao, Hu Zhang, Qi Wang, Lei Feng, Hu Chen. Noise Suppression of Medium-Fineness Fiber Optic Fabry‒Perot Sensor Based on White Light Interference Technology[J]. Acta Optica Sinica, 2025, 45(3): 0307002

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    Paper Information

    Category: Fourier optics and signal processing

    Received: Oct. 20, 2024

    Accepted: Nov. 28, 2024

    Published Online: Feb. 21, 2025

    The Author Email: Hu Chen (chenhu19861124@163.com)

    DOI:10.3788/AOS241662

    CSTR:32393.14.AOS241662

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology