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Self-assembled on-chip spherical-cap-shaped microresonators for high sensitivity temperature sensing.

Ming Chen, Guoqiang Gu, Baoping Zhang

    Optics Express
    |November 19, 2016
    PubMed
    Summary

    This study introduces novel on-chip microresonators for sensitive temperature detection. These devices, utilizing UV-curable adhesive, achieve high sensitivity for precise temperature measurements.

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    Area of Science:

    • Photonics
    • Materials Science
    • Nanotechnology

    Background:

    • Whispering-gallery mode (WGM) microresonators are sensitive to environmental changes.
    • Developing cost-effective and high-performance sensors is crucial for various applications.

    Purpose of the Study:

    • To propose and demonstrate on-chip spherical-cap-shaped microresonators for high-sensitivity temperature sensing.
    • To investigate the performance of these microresonators under varying input power and temperature conditions.

    Main Methods:

    • Fabrication of spherical-cap-shaped microresonators using self-assembled UV-curable adhesive.
    • Observation and analysis of whispering-gallery mode resonances.
    • Characterization of wavelength shifts in response to temperature variations.

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    Main Results:

    • Successfully demonstrated on-chip spherical-cap-shaped microresonators.
    • Observed whispering-gallery mode resonances in the fabricated devices.
    • Achieved a high temperature sensing sensitivity of 0.14-0.22 nm/°C across various resonator diameters.

    Conclusions:

    • On-chip spherical-cap-shaped microresonators are effective for high-sensitivity temperature sensing.
    • The proposed microresonators offer a promising platform for advanced optical sensing applications.
    • The self-assembly method provides a scalable approach for fabricating these sensing devices.