Mechanical and thermal properties variant of polymer optical fibers

Nirmal K. Waalib-Singh; Mark Sceats

doi:10.1117/12.545576

10 September 2004 Mechanical and thermal properties variant of polymer optical fibers

Nirmal K. Waalib-Singh, Mark Sceats

Proceedings Volume 5465, Reliability of Optical Fiber Components, Devices, Systems, and Networks II; (2004) https://doi.org/10.1117/12.545576
Event: Photonics Europe, 2004, Strasbourg, France

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 (T_g) shifts to higher temperatures. A lack of a clear (T_g) 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.

Citation Download Citation

Nirmal K. Waalib-Singh and Mark Sceats "Mechanical and thermal properties variant of polymer optical fibers", Proc. SPIE 5465, Reliability of Optical Fiber Components, Devices, Systems, and Networks II, (10 September 2004); https://doi.org/10.1117/12.545576

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KEYWORDS

Polymer optical fibers

Polymers

Structured optical fibers

Glasses

Optical fibers

Prototyping

Aerospace engineering

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