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Related Experiment Video

Updated: Jun 12, 2026

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
07:22

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

Published on: February 3, 2023

Compressible Fabry-Perot refractometer.

M Andersson, L Eliasson, L R Pendrill

    Applied Optics
    |June 5, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study details using a long, stable Fabry-Perot etalon for air refractometry. Atmospheric pressure changes were measured, showing a small deviation in refractive index values.

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    Area of Science:

    • Optical physics
    • Metrology

    Background:

    • Fabry-Perot etalons are key optical resonators.
    • Accurate measurement of air's refractive index is crucial for metrology.

    Purpose of the Study:

    • To investigate the use of a long, thermally stable Fabry-Perot etalon as a refractometer.
    • To analyze the impact of atmospheric pressure on refractive index measurements.

    Main Methods:

    • Constructed a Fabry-Perot etalon using fused silica plates and a Zerodur spacer.
    • Employed a frequency-stabilized He-Ne laser and mirror optics to capture interferograms.
    • Monitored etalon performance under varying atmospheric pressure conditions.

    Main Results:

    • Demonstrated the influence of atmospheric pressure changes on the etalon's performance.

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    Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
    07:22

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

    Published on: February 3, 2023

    Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing
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    Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

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  • Measured refractive index values showed a deviation of 2 parts in 10^7 from calculated values.
  • Identified and discussed potential sources of experimental error.

    • Conclusions:

    • The long, thermally stable Fabry-Perot etalon is a viable tool for precise air refractometry.
    • Atmospheric pressure variations introduce measurable deviations in refractive index.
    • Further investigation into error sources can enhance measurement accuracy.