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Related Concept Videos

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Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
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Related Experiment Video

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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

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Published on: September 30, 2019

Two-mode fiber-optic resonant ring interferometer as a sensor.

L H Jae, M Oh, Y Kim

    Optics Letters
    |September 18, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates a fiber-optic resonant ring interferometer capable of detecting temperature changes and their direction. The device utilizes optical path-length differences for precise thermal sensing applications.

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    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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    Area of Science:

    • Optoelectronics
    • Fiber Optics
    • Interferometry

    Background:

    • Fiber-optic sensors are crucial for remote and harsh environment monitoring.
    • Resonant ring interferometers offer high sensitivity to external stimuli.
    • Understanding thermal effects in optical systems is vital for device stability.

    Purpose of the Study:

    • To fabricate and characterize a fiber-optic resonant ring interferometer.
    • To measure temperature-induced phase shifts and determine temperature variance direction.
    • To investigate the relationship between thermal phase shifts and output radiation patterns.

    Main Methods:

    • Fabrication of an unbalanced fiber-optic resonant ring interferometer using single-mode fiber and a directional coupler.
    • Measurement of phase shifts caused by temperature variations.
    • Utilizing a specific wavelength light source to determine temperature variance direction.
    • Employing a prism output coupler to analyze intensity variations in the radiation pattern.

    Main Results:

    • The fiber-optic resonant ring interferometer successfully measured temperature-induced phase shifts.
    • The direction of temperature variance was accurately determined using an appropriate light source wavelength.
    • Thermally induced phase shifts correlated with measurable intensity variations in the optical fiber's radiation pattern.

    Conclusions:

    • The developed fiber-optic resonant ring interferometer is a viable sensor for detecting temperature changes and direction.
    • The device's sensitivity to optical path-length differences enables precise thermal monitoring.
    • Further research can explore applications in various temperature-sensing fields.