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Related Experiment Video

Updated: Jun 22, 2026

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Picometer displacement sensing using the ultrahigh-order modes in a submillimeter scale optical waveguide.

Fan Chen, Zhuangqi Cao, Qishun Shen

    Optics Express
    |June 9, 2009
    PubMed
    Summary

    This study introduces a novel displacement sensor utilizing ultrahigh-order guided modes in optical waveguides. The sensor achieves a highly stable displacement resolution of 3.3 picometers without complex control systems.

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    Area of Science:

    • Optoelectronics
    • Nanotechnology
    • Metrology

    Background:

    • Optical waveguides are crucial for sensing applications.
    • Precise displacement measurement is essential in various scientific fields.

    Purpose of the Study:

    • To propose an improved scheme for displacement measurement.
    • To leverage ultrahigh-order guided modes in optical waveguides for enhanced sensitivity.

    Main Methods:

    • Utilized ultrahigh-order guided modes in a symmetrical metal-cladding optical waveguide.
    • Employed lock-in amplification technique for signal processing.

    Main Results:

    • Demonstrated a sensor with a stable displacement resolution of 3.3 picometers.
    • Achieved high resolution without requiring a complicated servo system.

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    Published on: September 30, 2019

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    Last Updated: Jun 22, 2026

    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
    08:23

    A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

    Published on: September 30, 2019

    Conclusions:

    • The proposed scheme offers a sensitive and stable method for displacement measurement.
    • This technique is advantageous due to its simplicity and high resolution.