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Proceedings Paper

Behavior of intrinsic polymer optical fiber sensor for large-strain applications
Author(s): Sharon Kiesel; Kara Peters; Tasnim Hassan; Mervyn Kowalsky
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Paper Abstract

This paper derives the phase response of a single-mode polymer optical fiber (POF) for large-strain applications. The role of the finite deformation of the optical fiber and nonlinear strain optic effects are derived using a second order strain assumption and shown to be important at strain magnitudes as small as 1%. In addition, the role of the core radius change on the propagation constant is derived, however it is shown to be negligible as compared to the previous effects. It is shown that four mechanical and six opto-mechanical parameters must be calibrated to apply the POF sensor under axial loading. The mechanical nonlinearity of a typical single-mode polymer optical fiber is experimentally measured in axial tension and is shown to be more significant than that of their silica counterpart. The mechanical parameters of the single-mode polymer optical fiber are also measured for a variety of strain rates, from which it is demonstrated that the strain rate has a strong influence on yield stress and strain. The calibrated constants themselves are less affected by strain rate.

Paper Details

Date Published: 10 April 2007
PDF: 12 pages
Proc. SPIE 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007, 65300E (10 April 2007); doi: 10.1117/12.715170
Show Author Affiliations
Sharon Kiesel, North Carolina State Univ. (United States)
Kara Peters, North Carolina State Univ. (United States)
Tasnim Hassan, North Carolina State Univ. (United States)
Mervyn Kowalsky, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 6530:
Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007
Kara J. Peters, Editor(s)

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