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Furukawa Review No.42

Inference of the Optical Fiber Lifetime for Mechanical Reliability

Osamu Aso, Toshio Matsufuji, Takuya Ishikawa, Masateru Tadakuma, Soichiro Otosu, Takeshi Yagi, Masato Oku

Abstract

Optical fiber communication has found applications in new fields, such as fiber to the home (FTTH) optical interconnection systems and automobile communication systems. In these fields of applications, the mechanical reliability of the optical fiber is important. Since, the inference of the optical fiber lifetime has been usually discussed based on the theory of the mathematical statistics, the discussion becomes complicated. In this paper, we shall provide the statistical strength degradation map for intuitive understanding of the theory.

To avoid the serious B-value issue, the lifetime of the fiber has been conventionally inferred by using some approximations of the exact lifetime formula derived by Mitsunaga et.al. However, the approximations are violated in the case of short lifetime with large stress. To avoid the difficulties, we shall develop an alternative approximation method to resolve the problem.

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