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Related Experiment Video

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Implementation of a Reference Interferometer for Nanodetection
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High-resolution liquid level sensor utilizing a microwave photonics interrogated multicore fiber interferometer.

Yucheng Yao, Jianqiang Yuan, Zhiyong Zhao

    Optics Letters
    |December 1, 2023
    PubMed
    Summary
    This summary is machine-generated.

    A novel liquid level sensor using a multicore fiber (MCF) Michelson interferometer (MI) offers high sensitivity and resolution. This advanced sensor, interrogated by a microwave photonics filter (MPF) system, provides accurate measurements for various applications.

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    Area of Science:

    • Fiber optics
    • Optical sensing
    • Interferometry

    Background:

    • Traditional liquid level sensors often lack the required sensitivity and resolution.
    • Existing methods may be susceptible to environmental factors, impacting long-term stability.
    • The integration of multicore fibers (MCF) in interferometric systems presents opportunities for enhanced sensing capabilities.

    Purpose of the Study:

    • To propose and experimentally demonstrate a high-resolution, high-sensitivity liquid level sensor.
    • To leverage a multicore fiber (MCF) Michelson interferometer (MI) for precise liquid level detection.
    • To utilize a microwave photonics filter (MPF) system for improved sensor interrogation.

    Main Methods:

    • A Michelson interferometer (MI) was constructed using a multicore fiber (MCF).
    • The sensing fiber was attached to a cantilever beam to detect curvature changes due to liquid level variations.
    • A microwave photonics filter (MPF) system was employed for interrogating the sensor, enhancing measurement resolution.
    • Precise angular calibration of the MCF was performed to optimize sensor sensitivity.

    Main Results:

    • The proposed liquid level sensor demonstrated a sensitivity of 10.35 MHz/cm.
    • An impressive resolution of 0.04835 cm was achieved within a measurement range of ±14 cm.
    • The sensor exhibited high sensitivity, superior resolution, and long-term stability.

    Conclusions:

    • The developed MCF-MI sensor interrogated by an MPF system offers a promising solution for accurate liquid level monitoring.
    • The sensor's design provides significant advantages in sensitivity and resolution over conventional methods.
    • This technology holds potential for applications requiring precise and stable liquid level measurements.