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Related Concept Videos

IR Spectrometers01:25

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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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High temperature microstructured fiber sensor based on a partial-reflection-enabled intrinsic Fabry-Perot

Xiaoling Tan, Youfu Geng, Xuejin Li

    Applied Optics
    |February 12, 2014
    PubMed
    Summary
    This summary is machine-generated.

    A new compact fiber Fabry-Perot interferometer (FPI) sensor accurately measures high temperatures up to 1000°C. This innovative sensor utilizes simple fiber splicing and cleaving, offering potential for space-limited applications.

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    Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

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    Area of Science:

    • Optics and Photonics
    • Fiber Optic Sensors
    • High-Temperature Measurement

    Background:

    • Accurate high-temperature sensing is crucial in various industrial and scientific fields.
    • Existing sensors may face limitations in compactness and operating range.
    • Fiber optic sensors offer advantages like immunity to electromagnetic interference.

    Purpose of the Study:

    • To propose and demonstrate a compact fiber Fabry-Perot interferometer (FPI) sensor for high-temperature measurements.
    • To investigate the fabrication simplicity and performance characteristics of the proposed FPI sensor.
    • To evaluate the sensor's suitability for space-limited high-temperature sensing applications.

    Main Methods:

    • Fabrication of the FPI sensor using a small core microstructured fiber and single mode fiber.
    • Utilizing partial Fresnel reflection at fiber interfaces and end-surface reflection for interferometry.
    • Employing simple splicing and cleaving techniques for sensor construction.
    • Testing the sensor's response to temperatures up to 1000°C at a wavelength of 1570 nm.

    Main Results:

    • Successful demonstration of a compact FPI sensor.
    • Achieved fringe contrast up to 20 dB.
    • Obtained a high-temperature sensitivity of 17.7 pm/°C.
    • Sensor fabricated using only splicing and cleaving techniques.

    Conclusions:

    • The proposed compact FPI sensor is effective for high-temperature measurements up to 1000°C.
    • The fabrication method is simple, relying solely on splicing and cleaving.
    • The sensor exhibits excellent potential for high-temperature sensing in space-constrained environments.