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)

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.
LanguageEnglish
Title of host publicationOFS2012 22nd International Conference on Optical Fiber Sensors
Volume8421
DOIs
Publication statusPublished - Oct 2012

Fingerprint

silicon dioxide
fibers
damage
temperature
hydrolysis
polynomials
cracks
optical fibers
attenuation
melting
gratings
heating

Keywords

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

Cite this

Perry, M., Niewczas, P., Johnston, M., Cook, K., & Canning, J. (2012). Mechanical strength of silica fiber splices after exposure to extreme temperatures. In OFS2012 22nd International Conference on Optical Fiber Sensors (Vol. 8421) https://doi.org/10.1117/12.965872
Perry, Marcus ; Niewczas, Pawel ; Johnston, Michael ; Cook, Kevin ; Canning, John. / Mechanical strength of silica fiber splices after exposure to extreme temperatures. OFS2012 22nd International Conference on Optical Fiber Sensors. Vol. 8421 2012.
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Perry, M, Niewczas, P, Johnston, M, Cook, K & Canning, J 2012, Mechanical strength of silica fiber splices after exposure to extreme temperatures. in OFS2012 22nd International Conference on Optical Fiber Sensors. vol. 8421. https://doi.org/10.1117/12.965872

Mechanical strength of silica fiber splices after exposure to extreme temperatures. / Perry, Marcus; Niewczas, Pawel; Johnston, Michael; Cook, Kevin; Canning, John.

OFS2012 22nd International Conference on Optical Fiber Sensors. Vol. 8421 2012.

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

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AB - 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.

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Perry M, Niewczas P, Johnston M, Cook K, Canning J. Mechanical strength of silica fiber splices after exposure to extreme temperatures. In OFS2012 22nd International Conference on Optical Fiber Sensors. Vol. 8421. 2012 https://doi.org/10.1117/12.965872