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Related Concept Videos

Interference and Diffraction02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

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Related Experiment Video

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

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Published on: November 30, 2012

Automatic analysis of interferograms: optical waveguide refractive index profiles.

B C Wonsiewicz, W G French, P D Lazay

    Applied Optics
    |February 19, 2010
    PubMed
    Summary
    This summary is machine-generated.

    We developed a machine-aided method to rapidly determine optical waveguide refractive index profiles using interference microscopy. This technique analyzes interference micrographs to calculate the best fit power law function for accurate fiber characterization.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Optical waveguides with graded refractive index cores are crucial for compensating mode velocities.
    • Interference microscopy is a key technique for measuring the refractive index profiles of these waveguides.

    Purpose of the Study:

    • To develop a rapid, machine-aided method for analyzing interference micrographs.
    • To accurately determine the refractive index profiles of optical waveguides.

    Main Methods:

    • Digitizing interference micrographs using a scanning microdensitometer.
    • Computer-based determination of fringe center lines.
    • Converting fringe data into refractive index and fiber radius information.
    • Calculating a best fit power law function.

    Main Results:

    • Successful development of a machine-aided analysis method.
    • Rapid determination of optical waveguide refractive index profiles.
    • Accurate calculation of refractive index and fiber radius data.

    Conclusions:

    • The developed method offers a fast and accurate approach for optical waveguide characterization.
    • This technique facilitates precise determination of refractive index profiles essential for waveguide performance.