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Proceedings Paper

On a possible method to measure the radial profile of the photoelastic constant in step-index optical fiber
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Paper Abstract

We describe a measurement method to determine the radial distribution of the photoelastic coefficient C in a step-index optical glass fiber. This method is based on the measurement of the retardance profile of a transversally illuminated fiber for increasing tensile load. The radial profile C(r) is obtained from the inverse Abel transform of this retardance profile. We measured three step-index glass fibers with three different core radii. The results suggest that C may be constant across the fiber section and that the mean absolute value of C is slightly larger for glass fibers than for fused silica. Additionally, the shape of the actual refractive index profile can be derived from the retardance measurements.

Paper Details

Date Published: 15 May 2014
PDF: 8 pages
Proc. SPIE 9141, Optical Sensing and Detection III, 914115 (15 May 2014); doi: 10.1117/12.2050343
Show Author Affiliations
Sophie Acheroy, Royal Belgian Military Academy (Belgium)
Patrick Merken, Royal Belgian Military Academy (Belgium)
Thomas Geernaert, Vrije Univ. Brussel (Belgium)
Heidi Ottevaere, Vrije Univ. Brussel (Belgium)
Hugo Thienpont, Vrije Univ. Brussel (Belgium)
Francis Berghmans, Vrije Univ. Brussel (Belgium)

Published in SPIE Proceedings Vol. 9141:
Optical Sensing and Detection III
Francis Berghmans; Anna G. Mignani; Piet De Moor, Editor(s)

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