Strength degradation of silica fibers by acetone immersion

Andrew T. Taylor, M. John Matthewson, C. R. Kurkjian

Research output: Contribution to journalConference articlepeer-review

Abstract

A single-layer UV-curable polyacrylate-coated telecommunications grade fused silica fiber was found to have a significant reduction in two-point bending strength after immersion in acetone. The two-point bending and tensile strengths of this fiber as a function of immersion time in acetone were determined, and this strength loss was not seen for 0.5-m gauge length tensile specimens. SEM and optical fractography was performed on the weak specimens, and the cause of the strength reduction is proposed to arise from particles smaller than 3 μm in the coating. These particles could cause surface flaws by sliding contact damage incurred during relative motion between the coating and the glass. This sliding could occur either while flexing the fiber in preparation for a bending strength measurement or due to coating elongation. While it is not clear which mechanism is operating, both are consistent with the observation that degradation is only observed for bending strength measurements.

Original languageEnglish (US)
Pages (from-to)108-114
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3848
StatePublished - 1999
EventOptical Fiber Reliability and Testing - Boston, MA, USA
Duration: Sep 19 1999Sep 20 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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