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A Stable Phantom Material for Optical and Acoustic Imaging
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Measuring cylindrically symmetric refractive-index profiles: a method.

D Gregoris1, K Iizuka

  • 1University of Toronto, Department of Electrical Engineering, Toronto, Ontario M5S 1A4, Canada.

Applied Optics
|February 1, 1983
PubMed
Summary
This summary is machine-generated.

A new nondestructive method accurately measures refractive-index profiles in transparent cylinders. This technique, using refracted ray displacement, is ideal for characterizing optical fibers and rod lenses.

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Area of Science:

  • Optical Physics
  • Materials Science
  • Metrology

Background:

  • Accurate characterization of refractive-index profiles is crucial for optical components.
  • Existing methods may be destructive, costly, or lack precision for certain geometries.

Purpose of the Study:

  • To introduce and validate a novel nondestructive method for measuring refractive-index profiles.
  • To assess the accuracy and applicability of the technique for transparent cylinders.

Main Methods:

  • Employs measurement of the axial displacement of light rays refracted within a cylindrical sample.
  • Utilizes a nondestructive optical technique requiring modest experimental equipment.
  • Experimental determination of three distinct refractive-index profiles.

Main Results:

  • Achieved profile measurement errors better than 1 part in 10^3.
  • Identified key experimental parameters influencing profile accuracy.
  • Demonstrated successful application to different index profile types.

Conclusions:

  • The developed method offers a precise and nondestructive approach for refractive-index profiling.
  • The technique is suitable for characterizing optical fiber preforms and graded-index rod lenses.
  • Further optimization based on experimental parameter analysis can enhance accuracy.