Defocused transfer function for measurement of refractive index profiles of axially symmetric optical fibers

Edgar Saucedo Casas; Vladimir Petr Minkovich

doi:10.1117/1.2931469

1 May 2008 Defocused transfer function for measurement of refractive index profiles of axially symmetric optical fibers

Edgar Saucedo Casas, Vladimir Petr Minkovich

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Optical Engineering, Vol. 47, Issue 5, 055002 (May 2008). https://doi.org/10.1117/1.2931469

Abstract

A defocused transfer function of experimental microscopic bright-field images, closely connected with the evaluation of the relative refractive index profile of axially symmetric optical fibers, is presented. It is shown that with this function it is possible to obtain, with high precision, the defocused bright-field images of investigated fibers from their focus images and then to easily evaluate the relative refractive index profiles of the fibers.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Edgar Saucedo Casas and Vladimir Petr Minkovich "Defocused transfer function for measurement of refractive index profiles of axially symmetric optical fibers," Optical Engineering 47(5), 055002 (1 May 2008). https://doi.org/10.1117/1.2931469

Published: 1 May 2008

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KEYWORDS

Refractive index

Optical fibers

Step index fibers

Graded index fibers

Optical engineering

Solids

Helium neon lasers

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