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Related Concept Videos

Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

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Updated: Jun 15, 2026

Implementation of a Reference Interferometer for Nanodetection
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Published on: April 26, 2014

Optical fiber refractometry by interference microscopy: a simplified method.

J Stone, H E Earl

    Applied Optics
    |March 6, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel interference technique simplifies optical fiber refractive index profiling. This cost-effective method closely matches Mach-Zehnder interferometry results for advanced optical materials analysis.

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    Area of Science:

    • Optics
    • Materials Science
    • Optical Engineering

    Background:

    • Accurate determination of refractive index profiles is crucial for designing and fabricating advanced optical fibers.
    • Traditional methods like Mach-Zehnder interferometry provide high accuracy but involve complex and expensive instrumentation.
    • A need exists for simpler, more cost-effective techniques for measuring optical fiber refractive index profiles.

    Purpose of the Study:

    • To introduce and validate a new, simplified interference technique for obtaining optical fiber index of refraction profiles.
    • To demonstrate the technique's applicability using a conventional reflected light microscope.
    • To compare the results with established Mach-Zehnder interferometry methods.

    Main Methods:

    • A novel interference microscopy technique was developed, closely related to Mach-Zehnder microscope interferometry.
    • The method utilizes a conventional reflected light microscope for data acquisition.
    • Specially prepared optical fiber samples were analyzed using this new technique.

    Main Results:

    • The new interference technique successfully obtained index of refraction profiles for optical fibers.
    • Data acquired using the novel method showed excellent agreement with results obtained via Mach-Zehnder interferometry.
    • The technique achieved comparable accuracy to Mach-Zehnder interferometry.

    Conclusions:

    • The developed interference technique offers a viable and simplified alternative for optical fiber refractive index profiling.
    • This method significantly reduces the cost and complexity of instrumentation compared to traditional approaches.
    • The technique holds promise for broader accessibility in optical fiber characterization and development.