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Related Experiment Video

Updated: Feb 22, 2026

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
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Chirped fiber tip Fabry-Perot interferometer.

Xinpu Zhang, Liyang Shao, Xihua Zou

    Optics Letters
    |September 29, 2017
    PubMed
    Summary
    This summary is machine-generated.

    We developed a novel fiber tip Fabry-Perot interferometer with a chirped spectrum. This device enables precise spatial localization of external temperature changes using its unique spectral properties.

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    Area of Science:

    • Optoelectronics
    • Fiber Optics
    • Interferometry

    Background:

    • Fabry-Perot (FP) interferometers are crucial optical sensors.
    • Chirped Fiber Bragg Gratings (FBGs) offer unique spectral properties.
    • Miniaturization of optical sensors is a key research area.

    Purpose of the Study:

    • To demonstrate a novel fiber tip FP interferometer with a chirped spectral characteristic.
    • To investigate the temperature response of this new interferometer.
    • To show its capability for spatial localization of temperature perturbations.

    Main Methods:

    • Fabrication of a fiber tip FP interferometer using an etched chirped FBG and a fiber tip mirror.
    • Dynamic chemical etching process to shape and reduce the FBG size.
    • Measurement of wavelength shifts in the reflection spectrum to analyze temperature response.

    Main Results:

    • Successful fabrication of a miniaturized fiber tip FP interferometer with a chirped interference spectrum.
    • Demonstration of a measurable wavelength shift in response to external temperature changes.
    • Experimental validation of the interferometer's ability for spatial temperature localization.

    Conclusions:

    • The novel chirped fiber tip FP interferometer offers a unique approach for sensing.
    • Its configuration allows for the spatial localization of temperature perturbations.
    • This technology has potential applications in distributed temperature sensing.