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Related Experiment Video

Updated: Jun 10, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Two-frequency fiber-optic sensor system using high-birefringence optical fiber.

P Y Chien, C L Pan

    Applied Optics
    |August 20, 2010
    PubMed
    Summary
    This summary is machine-generated.

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    This study demonstrates a novel fiber sensor system using a high-birefringence optical fiber and a laser. The system effectively detects minute path-length changes with high sensitivity, achieving a minimum detectable optical phase delay.

    Area of Science:

    • Optoelectronics
    • Fiber optic sensing
    • Laser interferometry

    Background:

    • High-birefringence (Hi-Bi) optical fibers offer unique properties for sensing applications.
    • Frequency-stabilized lasers are crucial for precise measurements in interferometric systems.
    • Detecting small optical path-length changes is essential for various scientific and industrial applications.

    Purpose of the Study:

    • To demonstrate a fiber sensor system capable of detecting small path-length changes.
    • To utilize a high-birefringence optical fiber and a frequency-stabilized He-Ne Zeeman laser for enhanced sensitivity.
    • To evaluate the performance of phase-sensitive detection and phase-demodulation techniques in this system.

    Main Methods:

    • Employing a high-birefringence optical fiber as the sensing element.

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    Last Updated: Jun 10, 2026

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
    09:03

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

    Published on: January 7, 2019

    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

  • Utilizing a frequency-stabilized Helium-Neon (He-Ne) Zeeman laser operating at a wavelength of 0.6328 micrometers.
  • Extracting path-length information from the amplitude or phase of the laser beat frequency using phase-sensitive detection or phase-demodulation.

    • Main Results:

    • Successful demonstration of a fiber sensor system.
    • Achieved a minimum detectable optical phase delay of 1.5 x 10(-6) rad/Hz((1/2)) using phase-sensitive detection.
    • Achieved a minimum detectable optical phase delay of 17 x 10(-6) rad/Hz((1/2)) using phase-demodulation.

    Conclusions:

    • The developed fiber sensor system effectively measures small optical path-length variations.
    • The combination of Hi-Bi fiber and a stabilized laser enables high-sensitivity measurements.
    • The demonstrated techniques provide a robust platform for advanced optical sensing.