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Related Experiment Video

Updated: Apr 30, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
07:28

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

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Sensitive birefringent temperature sensor based on a waveguide ring resonator.

Xuhui Yu, Huilian Ma, Zhonghe Jin

    Applied Optics
    |May 3, 2014
    PubMed
    Summary
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    This study presents a sensitive birefringent thermometer using a silicon dioxide (SiO2) waveguide ring resonator. This device achieves high temperature sensitivity, suitable for terahertz thermal detection.

    Area of Science:

    • Optoelectronics
    • Photonics
    • Materials Science

    Background:

    • Temperature sensing is crucial for various applications, including thermal detection.
    • Existing thermometers may lack sensitivity or the ability to operate in specific spectral ranges.
    • Silicon dioxide (SiO2) waveguides offer potential for integrated optical devices.

    Purpose of the Study:

    • To demonstrate a novel birefringent thermometer utilizing a SiO2 waveguide ring resonator.
    • To enhance temperature sensitivity through optical resonance phenomena.
    • To evaluate the device's suitability for terahertz thermal detection.

    Main Methods:

    • Fabrication of a SiO2 waveguide ring resonator.
    • Utilizing the resonances of two polarization modes within the resonator to enhance temperature sensitivity.

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    Last Updated: Apr 30, 2026

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  • Testing the device's performance across a defined temperature range.
  • Assessing common-mode rejection for external influences.

    • Main Results:

    • Demonstrated a sensitive birefringent thermometer with enhanced temperature sensitivity.
    • Achieved a linear temperature detection range from 6°C to 40°C.
    • Obtained a high resolution of 0.025°C.
    • Exhibited a high degree of common-mode rejection against external influences.

    Conclusions:

    • The developed SiO2 waveguide ring resonator serves as an effective birefringent thermometer.
    • The device shows promise for the fabrication of sensitive terahertz thermal detectors.
    • The resonance-enhanced sensitivity and common-mode rejection make it a robust sensing platform.