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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 3 — Mar. 1, 2012
  • pp: 304–320

Analysis of glass flow during extrusion of optical fiber preforms

Heike Ebendorff-Heidepriem and Tanya M. Monro  »View Author Affiliations

Optical Materials Express, Vol. 2, Issue 3, pp. 304-320 (2012)

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Billet extrusion is a powerful technique for fabricating soft glass optical fiber preforms. This paper reports progress in the understanding of the relationships between extrusion process parameters and the die geometry. The friction for glass flow within the die is described by a die constant that can be either calculated using die feature dimensions or determined using processing parameters and a glass with known temperature-viscosity behavior. In complex dies in which the glass flows through an array of feed holes the friction can be calculated from the number, length and diameter of the individual channels within the die. The glass flow analysis allows improvement of the extrusion process and guidance of future die design.

© 2012 OSA

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(160.2750) Materials : Glass and other amorphous materials

ToC Category:
Materials for Fiber Optics

Original Manuscript: January 3, 2012
Revised Manuscript: February 15, 2012
Manuscript Accepted: February 17, 2012
Published: February 22, 2012

Heike Ebendorff-Heidepriem and Tanya M. Monro, "Analysis of glass flow during extrusion of optical fiber preforms," Opt. Mater. Express 2, 304-320 (2012)

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