Strength and fatigue of zirconia-induced weak spots in optical fiber

Anton H. E. Breuls; T. Svenson

doi:10.1117/12.168613

1 March 1994 Strength and fatigue of zirconia-induced weak spots in optical fiber

Anton H. E. Breuls, T. Svenson

Proceedings Volume 2074, Fiber Optics Reliability and Testing: Benign and Adverse Environments; (1994) https://doi.org/10.1117/12.168613
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

The reliability of long lengths of fibers in optical cables is determined by the presence of weak spots which are infrequently produced by normal fiber production methods. It is important to investigate the influence on strength of fiber from different kinds of weak spots. The present study is confined to weak spots resulting from melted-in zirconia particles. Tensile testing of optical fiber, in which strength degrading particles of a roughly dual-size distribution have been introduced on purpose, was done At a wide range of stress rates. The Weibull plots of tensile strength of the fiber were compared with a theoretical distribution, based on a simple relation between particle size and fiber strength. In this way, failure modes could be identified and related to the size of particles. From the comparison it was concluded that the size of zirconia particles has no significant influence on the fatigue of fiber, within the applied stress rates. A significant retardment of the fatigue of weak spots was also observed at low stress rates.

Citation Download Citation

Anton H. E. Breuls and T. Svenson "Strength and fatigue of zirconia-induced weak spots in optical fiber", Proc. SPIE 2074, Fiber Optics Reliability and Testing: Benign and Adverse Environments, (1 March 1994); https://doi.org/10.1117/12.168613

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