High temperature mechanical strength and reliability of optical fibers have become important subjects as optical fibers
are increasingly used for harsher environments. Theories and models of fiber mechanical properties established for
traditional telecommunications applications may need to be validated for applications at elevated temperatures. In this
paper, we describe the test setup for high temperature tensile strength of fiber and report initial results of dynamic tensile
strength of polyimide coated optical fiber at 300 and 350ºC for different heating time intervals. The results are compared
with room temperature strength data, data available in the literature, and our earlier work on thermogravimetric analysis
(TGA) weight loss of the polyimide coating and the observations on surface morphology at elevated temperatures.
Interesting observations are discussed and possible explanations are proposed.
Lei Huang, Robert S. Dyer, Ralph J. Lago, Andrei A. Stolov, and Jie Li, "Mechanical properties of polyimide coated optical fibers at elevated temperatures," Proc. SPIE 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI, 97020Y (Presented at SPIE BiOS: February 15, 2016; Published: 7 March 2016); https://doi.org/10.1117/12.2210957.
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