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Proceedings Paper

Measurements of stress-optic coefficient and Young's modulus in PMMA fibers drawn under different conditions
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Paper Abstract

We have systematically measured the differential stress-optic coefficient, ΔC, and Young's modulus, E, in a number of PMMA fibers drawn with different stress, ranging from 2 up to 27 MPa. Effect of temperature annealing on those parameters was also investigated. ΔC was determined in transverse illumination by measuring the dependence of birefringence on additional axial stress applied to the fiber. Our results show that ΔC in PMMA fibers has a negative sign and ranges from -4.5 to -1.5×10-12 Pa-1 depending on the drawing stress. Increase of the drawing stress results in greater initial fiber birefringence and lower ΔC. The dependence of ΔC and initial birefringence upon drawing stress is nonlinear and gradually saturates for higher drawing stress. Moreover, we find that ΔC is linearly proportional to initial fiber birefringence and that annealing the fiber has no impact on the slope of this dependence. On the other hand, no clear dependence was observed between the fiber drawing stress and the Young's modulus of the fibers as measured using microscopic digital image correlation with the fibers tensioned using an Instron tension tester.

Paper Details

Date Published: 14 May 2010
PDF: 8 pages
Proc. SPIE 7714, Photonic Crystal Fibers IV, 77140G (14 May 2010); doi: 10.1117/12.855089
Show Author Affiliations
Marcin K. Szczurowski, Wroclaw Univ. of Technology (Poland)
Tadeusz Martynkien, Wroclaw Univ. of Technology (Poland)
Gabriela Statkiewicz-Barabach, Wroclaw Univ. of Technology (Poland)
Lutful Khan, Aston Univ. (United Kingdom)
David J. Webb, Aston Univ. (United Kingdom)
Chenchun Ye, Univ. of Southampton (United Kingdom)
Janice Dulieu-Barton, Univ. of Southampton (United Kingdom)
Waclaw Urbanczyk, Wroclaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 7714:
Photonic Crystal Fibers IV
Kyriacos Kalli; Waclaw Urbanczyk, Editor(s)

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