Fabrication Of Heavy Metal Fluoride Glass Rods By Repetitive High-Speed Wetting

M. M. Broer; A. J. Bruce

doi:10.1117/12.951380

2 June 1989 Fabrication Of Heavy Metal Fluoride Glass Rods By Repetitive High-Speed Wetting

M. M. Broer, A. J. Bruce

Proceedings Volume 1048, Infrared Fiber Optics; (1989) https://doi.org/10.1117/12.951380
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

Current heavy metal fluoride glass fiber fabrication techniques are mostly based on the casting of preforms. In these techniques the quenching rate of the glass is limited by the square of the radius of the preform, typically 0.5 cm. This results in crystallization and hence enhanced light scattering, which is the main obstacle presently in achieving very low optical losses (~ 10-2 dB/km). We describe a novel glass (preform core) rod fabrication technique in which the rod is made with axial deposition of thin (<< 0.1 cm) layers of glass. This increases the quenching rate significantly compared to the casting techniques. In this new technique a bait rod is rapidly driven into a fluoride glass melt and withdrawn after the tip is wetted with a thin layer of glass. An approx. 10 cm long Zr-Ba-La-Al-Na fluoride rod (0.4 cm diameter) was fabricated with this technique.

Citation Download Citation

M. M. Broer and A. J. Bruce "Fabrication Of Heavy Metal Fluoride Glass Rods By Repetitive High-Speed Wetting", Proc. SPIE 1048, Infrared Fiber Optics, (2 June 1989); https://doi.org/10.1117/12.951380

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