Enhanced Force Sensing Utilizing a Glass-Supported WGM Microbubble Resonator

Yiming Shen*, Zhe Wang, Anand V. R., Zhuochen Wang, Rayhan Habib Jibon, Anuradha Rout, Bo Cai, Qiang Wu, Yuliya Semenova

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)
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    Abstract

    Mechanical force sensors are critical for a wide range of advanced applications. This paper presents a high-performance whispering gallery mode (WGM) force sensor based on a glass-supported microbubble resonator (MBR). By incorporating the proposed glass support design, the proposed sensor achieves the highest force sensitivity reported for MBR-based structures, of 125.71 pm/mN and a detection limit of 52.26 μN. The sensor has a response time of 3.5 ms, enabling rapid detection of dynamic force changes. Further tests show that the sensor is capable of detecting subtle forces, such as those created by water droplets and a gentle breeze, paving the way for potential applications in health monitoring, vibration detection, and other dynamic force-sensing scenarios.
    Original languageEnglish
    Pages (from-to)5989-5995
    Number of pages7
    JournalJournal of Lightwave Technology
    Volume43
    Issue number12
    Early online date1 Apr 2025
    DOIs
    Publication statusPublished - 15 Jun 2025

    Keywords

    • Force sensor
    • microbubble resonator
    • optical fiber sensor
    • whispering gallery modes

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