Abstract

There have been a number of studies which have shown the necessity of drawing some types of optical fiber at high tensions to achieve the lowest losses.1–3 However, questions have been raised as to the effect of high draw tensions or low draw temperatures on the strength of optical fibers. Kobayashi et al.4 measured fiber strengths as a function of draw temperature for several preform rods which were subjected to a variety of surface treatments prior to drawing. They concluded that the tensile strength of the fiber depends on the condition of the preform surface as well as the fiber draw temperature. Tariyal and Kallsh5 found that preforms subjected to surface damage can cause reductions of fiber strength in certain draw conditions. DiMarcello et al.6 found that the strength of fiber drawn from fire-polished synthetic silica rod was degraded when drawn at low speeds and relatively high tensions. Since draw tension is determined by both the furnace temperature and draw speed, the purpose of this study is to separate the effects of each on fiber strength and gain some understanding of the extent of flaw healing which can occur during fiber drawing.

© 1987 Optical Society of America

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References

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