Fluoride glass optical fiber

Stock material or miscellaneous articles – Composite – Of bituminous or tarry residue

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428373, G02B 600

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active

046748350

ABSTRACT:
In a fluoride glass optical fiber with extremely small transmission loss for infrared light having a core layer and a clad layer each consisting mainly of ZrF.sub.4 - BaF.sub.2 - LaF.sub.3 - AlF.sub.3, NaF and H.sub.f F.sub.4 are used as additives to obtain a desired refractive index difference between the core layer and the clad layer. The mixing ratio of the NaF to the H.sub.f F.sub.4 satisfies the realtions;

REFERENCES:
patent: 4445755 (1984-05-01), Ohsawa et al.
"A Core-Clad Composition for Crystallization-Free Fluoride Fibers", Journal of Lightwave Technology, vol. LT-3, No. 3, Jun. 1985, pp. 569-573.

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