Stock material or miscellaneous articles – Composite – Of bituminous or tarry residue
Patent
1985-08-14
1987-06-23
Kendell, Lorraine T.
Stock material or miscellaneous articles
Composite
Of bituminous or tarry residue
428373, G02B 600
Patent
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.
Mimura Yoshinori
Nakai Tetsuya
Shinbori Osamu
Tokiwa Hideharu
Kendell Lorraine T.
Kokusai Denshin Denwa Co. Ltd.
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