Dynamic fatigue of optical fiber under repeated stress

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Abstract
In this paper we present dynamic fatigue of fused silica optical fibers. Time-to-failure of the fibers under repeated stress has been investigated theoretically and experimentally, and the results have been compared with the time-to-failure under constant stress and increasing stress at a constant rate. As a result, it is found that the time-to-failure under repeated stress is related to the maximum stress with the same parameter n as those representing the times-to-failure by the other tests. The lifetime under repeated stress can be predicted by using two constants measured by the increasing test stress at a constant rate.

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