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Proceedings Paper

Mechanical and thermal properties variant of polymer optical fibers
Author(s): Nirmal K. Waalib-Singh; Mark Sceats
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Paper Abstract

Building on recent work, this paper describes the viscoelastic behavior of microstructured polymer optical fiber (MPOF). Previously published fixed frequency dynamic mechanical and thermal properties of the two types of POFs; a commercial, C-type and MPOF fiber prototype B are compared here with multi-frequency data. As expected of viscoelastic materials, results reveal a rate dependent behavior of the fibers where storage modulus (E') increases with frequency at each temperature and the glass transition (Tg) shifts to higher temperatures. A lack of a clear (Tg) and least amount of separation between low- and high-temperature transitions at different frequencies in the C fiber clearly indicate the speciality of the fiber; it exhibits extensive elongation or rather strain-softening beyond the draw-temperature-under-load (DrTUL), which is a highly desired property for optimized hot-drawing. Strain-hardening as exhibited by the MPOF B is a brought-forward effect of the mechanical and thermal histories from its macroscopic deformation during preform structuring and fiber-forming. Polymer entanglements that cause an increase in storage modulus and 'resistive' contraction from 60 to 105°C are most likely to be networked in an orderly manner. Demonstrated again in both types of fiber, DrTUL is critical for load bearing drawing.

Paper Details

Date Published: 10 September 2004
PDF: 6 pages
Proc. SPIE 5465, Reliability of Optical Fiber Components, Devices, Systems, and Networks II, (10 September 2004); doi: 10.1117/12.545576
Show Author Affiliations
Nirmal K. Waalib-Singh, Univ. of Sydney (Australia)
Mark Sceats, Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 5465:
Reliability of Optical Fiber Components, Devices, Systems, and Networks II
Hans G. Limberger; M. John Matthewson, Editor(s)

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