Mechanical strength of silica fiber splices after exposure to extreme temperatures

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)
193 Downloads (Pure)


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.
Original languageEnglish
Title of host publicationOFS2012 22nd International Conference on Optical Fiber Sensors
Publication statusPublished - Oct 2012


  • mechanical strength
  • silica fiber splices
  • exposure
  • extreme temperatures

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