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Proceedings Paper

Model of an axially strained weakly guiding optical fiber modal pattern
Author(s): Claudio Oliveira Egalon; Robert S. Rogowski
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Paper Abstract

Axial strain may be determined by monitoring the modal pattern variation of an optical fiber. In this paper we present the results of a numerical model that has been developed to calculate the modal pattern variation at the end of a weakly guiding optical fiber under axial strain. Whenever an optical fiber is under stress, the optical path length, the index of refraction and the propagation constants of each fiber mode change. In consequence, the modal phase term of the fields and the fiber output pattern are also modified. For multimode fibers, very complicated patterns result. The predicted patterns are presented, and an expression for the phase variation with strain is derived.

Paper Details

Date Published: 1 December 1991
PDF: 14 pages
Proc. SPIE 1588, Fiber Optic Smart Structures and Skins IV, (1 December 1991); doi: 10.1117/12.50183
Show Author Affiliations
Claudio Oliveira Egalon, NASA/Langley Research Ctr. (United States)
Robert S. Rogowski, NASA/Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1588:
Fiber Optic Smart Structures and Skins IV
Richard O. Claus; Eric Udd, Editor(s)

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