Abstract

A mathematical model is derived for the focusing method which relates refractive-index and deflection function errors to errors in the measured light intensity. The model predicts that refractive-index measurement noise increases linearly from zero at the outside diameter of the fiber to a maximum value at the center of the core. Measurement errors for the focusing method determined by experiment are in close agreement with predictions obtained using the theoretical model.

© 1985 Optical Society of America

Error analysis of optical fiber refractive-index profiling using the focusing method

Toshiaki Iwai and Shigetada Kobayashi
Appl. Opt. 27(11) 2344-2352 (1988)

Focusing method for nondestructive measurement of optical fiber index profiles

D. Marcuse and H. M. Presby
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Holographic measurement of refractive-index profile in the transition region of an optical fiber preform

P. L. Chu and D. Peri
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Nondestructive measurement of refractive-index profile and cross-sectional geometry of optical fiber preforms

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Appl. Opt. 19(12) 2025-2030 (1980)

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