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Related Experiment Video

Updated: Feb 20, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

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Temperature sensing using CdSe quantum dot doped poly(methyl methacrylate) microfiber.

Ninik Irawati, Sulaiman W Harun, Husna A Rahman

    Applied Optics
    |October 20, 2017
    PubMed
    Summary
    This summary is machine-generated.

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    This study presents a novel noncontact temperature sensor using cadmium selenide quantum dot (QD) doped microfiber. The QD-doped fiber offers significantly enhanced sensitivity for precise temperature monitoring in the physiological range.

    Area of Science:

    • Materials Science
    • Optical Engineering
    • Nanotechnology

    Background:

    • Accurate noncontact temperature sensing is crucial for various applications.
    • Existing methods often face limitations in sensitivity, stability, or range.
    • Quantum dots offer unique optical properties for sensor development.

    Purpose of the Study:

    • To develop and characterize a novel noncontact temperature sensor.
    • To utilize wavelength shifts in quantum dot doped microfiber for temperature measurement.
    • To evaluate the sensor's performance within a physiologically relevant temperature range.

    Main Methods:

    • Fabrication of a polymer microfiber (PMF) doped with Cadmium Selenide (CdSe) quantum dots using a drawing method.
    • Integration of the doped PMF between tapered single-mode fibers.

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  • Measurement of temperature-induced wavelength shifts of the optical signal.

    • Main Results:

    • The CdSe quantum dot doped PMF sensor demonstrated a sensitivity of 58.5 pm/°C.
    • This sensitivity is approximately 18 times higher than that of undoped PMF.
    • The sensor exhibited a linear response in the 25°C-48°C range, suitable for physiological temperatures.

    Conclusions:

    • The proposed quantum dot doped microfiber sensor enables highly sensitive noncontact temperature measurements.
    • The sensor shows potential for long-term, high-stability optical fiber-based temperature sensing.
    • This technology advances optical sensing for biomedical and other applications.