Mechanical strength of silica fiber splices after exposure to extreme temperatures

Marcus Perry; Pawel Niewczas; Michael Johnston; Kevin Cook; John Canning

doi:10.1117/12.965872

7 November 2012 Mechanical strength of silica fiber splices after exposure to extreme temperatures

Marcus Perry, Pawel Niewczas, Michael Johnston, Kevin Cook, John Canning

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421AD (2012) https://doi.org/10.1117/12.965872
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

By using a combination of type-I and regenerated gratings, the mechanical strength of optical fiber splices after exposure to temperatures over 1300 °C was characterized. Splice strength was found to decrease with temperature with a secondorder polynomial dependence after exposure to environments hotter than 500 °C. Splices exposed to temperatures above 1300 °C were 80% more fragile than non-exposed splices. The lack of optical attenuation and the narrowing distribution of breaking strengths for higher temperatures suggest surface damage mechanisms, such as hydrolysis, play a key role in weakening post-heating and that damage mechanisms dominate over strengthening induced by crack melting.

Citation Download Citation

Marcus Perry, Pawel Niewczas, Michael Johnston, Kevin Cook, and John Canning "Mechanical strength of silica fiber splices after exposure to extreme temperatures", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421AD (7 November 2012); https://doi.org/10.1117/12.965872

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