Proceedings PaperThe Strength Of Optical Waveguide Fibers
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The strength of optical waveguide fibers is characterized by the presence of flaws distributed randomly over their surface in a way determined by the material and its past history. Fast fracture and time dependent strength measurements on waveguide fibers are presented and interpreted within the framework of Weibull statistics and fracture mechanics theory. A method of determining a complete set of time-to-failure parameters from short gauge length strength measurements is developed and applied to stress corrosion data obtained on fibers held at constant load in a high humidity environment. The effect of fiber strength on optical cable design, manufacture and installation is analyzed using simple cable structures to illustrate the general principles involved.