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Multimode interferometer-based torsion sensor employing perfluorinated polymer optical fiber.

Xiaojun Fan, Junfeng Jiang, Xuezhi Zhang

    Optics Express
    |November 6, 2019
    PubMed
    Summary
    This summary is machine-generated.

    A novel torsion sensor uses multimode interference in a polymer optical fiber (POF) structure. This flexible sensor achieves high sensitivity for precise torsion measurements.

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    Area of Science:

    • Optical Fiber Sensing
    • Photonics
    • Materials Science

    Background:

    • Torsion measurement is crucial in various engineering applications.
    • Existing torsion sensors often lack flexibility or sensitivity.
    • Optical fiber sensors offer potential for high-performance measurements.

    Purpose of the Study:

    • To develop and demonstrate a novel torsion sensor.
    • To utilize multimode interference (MMI) in a polymer optical fiber (POF) based structure.
    • To achieve high sensitivity and a large measurement range for torsion.

    Main Methods:

    • Fabrication of a single-mode-multimode-single-mode (SMS) fiber structure.
    • Incorporation of a perfluorinated POF section for flexibility.
    • Characterization of sensor response to varying torsion rates.

    Main Results:

    • The sensor demonstrated significant wavelength sensitivity (106.762 pm/(rad/m)).
    • High intensity sensitivity was achieved (0.165 dBm/(rad/m)).
    • A large torsion rate range of -100 to 100 rad/m was covered.

    Conclusions:

    • The proposed POF-based SMS structure is effective for torsion sensing.
    • The sensor's flexibility and sensitivity make it suitable for demanding applications.
    • This technology offers a promising approach for advanced optical torsion measurement.