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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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Multiparameter measurement sensor based on no-core fiber.

Jiacheng Sun, Tingting Wang, Xiuting Wang

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    |April 26, 2022
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    Summary
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    A novel fiber optic sensor using no-core-single-mode-no-core Mach-Zehnder interferometry accurately measures temperature and strain. This fiber sensor design optimizes coupler and sensing arm lengths for enhanced performance.

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    Area of Science:

    • Optoelectronics
    • Fiber Optics
    • Sensor Technology

    Background:

    • Mach-Zehnder interferometers are widely used for sensing applications.
    • No-core fibers offer unique light propagation characteristics for novel sensor designs.
    • Accurate measurement of environmental parameters like temperature and strain is crucial in various industries.

    Purpose of the Study:

    • To propose and analyze a novel no-core-single-mode-no-core Mach-Zehnder fiber sensor.
    • To determine the optimal structural parameters for the proposed sensor.
    • To demonstrate the sensor's capability for simultaneous measurement of temperature and strain/curvature.

    Main Methods:

    • Utilized finite element simulation and theoretical analysis to model the sensor.
    • Investigated the propagation of high-order modes within the single-mode fiber cladding.
    • Analyzed the transmission spectrum troughs for different interference orders.

    Main Results:

    • Determined optimal lengths for the no-core fiber couplers and the single-mode sensing arm.
    • Demonstrated that ambient temperature and applied force/curvature affect the guided modes.
    • Successfully established a sensing matrix for measuring temperature and strain/curvature.

    Conclusions:

    • The proposed no-core-single-mode-no-core Mach-Zehnder fiber sensor is effective for simultaneous temperature and strain/curvature measurement.
    • Finite element simulation and theoretical analysis are valuable tools for optimizing fiber sensor design.
    • This sensor architecture holds promise for advanced environmental monitoring applications.