Temperature dependence of strength and fatigue of fused silica fiber in the range 77 to 473 K

M. John Matthewson; Charles R. Kurkjian; Christopher D. Haines; Navin Venugopal

doi:10.1117/12.476174

30 April 2003 Temperature dependence of strength and fatigue of fused silica fiber in the range 77 to 473 K

M. John Matthewson, Charles R. Kurkjian, Christopher D. Haines, Navin Venugopal

Proceedings Volume 4940, Reliability of Optical Fiber Components, Devices, Systems, and Networks; (2003) https://doi.org/10.1117/12.476174
Event: Photonics Fabrication Europe, 2002, Bruges, Belgium

Abstract

The strength of optical fiber at low temperature is an important parameter since it approximates the inert strength, i.e. the starting strength of the material before degradation by fatigue. Published data suggest that the fatigue may abruptly slow below some temperature. However, published data are limited to strength vs temperature or fatigue in liquid nitrogen. We report strength and fatigue data for both bare (stripped) and metal coated fused silica optical fiber at temperatures down to 77 K. While fatigue slows as the temperature is reduced (i.e. the stress corrosion parameter increases with falling temperature) fatigue is still measurable at 77 K. This is the case even for hermetic metal coated fiber with extremely low water activity at the glass surface. The results confirm that fused silica exhibits "intrinsic" fatigue, i.e. fatigue in the absence of moisture.

Citation Download Citation

M. John Matthewson, Charles R. Kurkjian, Christopher D. Haines, and Navin Venugopal "Temperature dependence of strength and fatigue of fused silica fiber in the range 77 to 473 K", Proc. SPIE 4940, Reliability of Optical Fiber Components, Devices, Systems, and Networks, (30 April 2003); https://doi.org/10.1117/12.476174

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