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Proceedings Article

Extrusion method for making fiber optic preforms of special glasses

[+] Author Affiliations
Angela B. Seddon, David Furniss, Arash Motesharei

Univ. of Sheffield (United Kingdom)

Proc. SPIE 3416, Infrared Glass Optical Fibers and Their Applications, 32 (September 28, 1998); doi:10.1117/12.323398
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From Conference Volume 3416

  • Infrared Glass Optical Fibers and Their Applications
  • Mohammed Saad
  • Quebec, Canada | July 13, 1998

abstract

Extrusion of glass rods, tubes and core/clad performs of melt-derived, special glasses is being investigated to satisfy demand for preforms from which optical fiber can be drawn. These glasses include: heavy metal oxide, chalcogenide, halide as well as mixed systems such as oxyhalide, chalcohalide, and oxychalcogenide. Extruder equipment has been commissioned and progress in extrusion of rods, core/clad preforms and multimode, and monomode, proportioned tubes is described extruding water soluble sodium borosilicate glasses, for convenience. The extrusion process has been shown to produce good quality glass rods of close to 5mm diameter and tubes of sodium borosilicate glasses with OD of the order 10mm and OD/ID equals 2.5, 4.1, 7.1 and 11.0. The latter ratio approaches that required for a monomode proportioned preform. Tolerances on OD were within +/- 0.32mm and on ID were within +/- 0.19mm over at least 160mm of tube. The tube orifice out-of-round was <EQ 0.13mm at a measured point along the tubes. Also reported is the successful extrusion of Ga-La-S glasses which have potential as host glasses for rare earth doped optical devices.

© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Angela B. Seddon ; David Furniss and Arash Motesharei
"Extrusion method for making fiber optic preforms of special glasses", Proc. SPIE 3416, Infrared Glass Optical Fibers and Their Applications, 32 (September 28, 1998); doi:10.1117/12.323398; http://dx.doi.org/10.1117/12.323398


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