Optical properties of halide glasses

  • J. M. Parker
  • P. W. France
Chapter

Abstract

Glasses based on halides have been known for a considerable time but because of specific disadvantages such as toxicity (BeF2), hygroscopicity (ZnCl2, BeF2) and lack of stability (A1F3) were not widely developed. However, in 1974 a new class of halide materials based principally on ZrF4-BaF2 glasses was discovered in France (Poulain et al., 1975) with few of these difficulties. Their extended infra-red transparency compared with silica implied much lower minimum intrinisic absorption losses, because at longer wavelengths Rayleigh scattering is considerably reduced, and suggested the possibility that they might be used in long-haul telecommunications. A worldwide research programme was therefore initiated to develop a suitable melting and fabrication technology, and to optimize the glass compositions for stability and the required working properties, particular interest focusing on fibre production. At the same time many previously known glass systems have been re-examined and new compositions investigated.

Keywords

Stimulate Raman Scattering Fluoride Glass Fluorozirconate Glass ZBLAN Glass Heavy Metal Fluoride 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Chapman and Hall 1989

Authors and Affiliations

  • J. M. Parker
  • P. W. France

There are no affiliations available

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