Multi-component glass optical fiber for optical communication

Details Multi-component glass optical fiber for optical communication Multi-component glass optical fiber for optical communication

1982-05-26

1983-12-06

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 37, 501 38, 501 66, 501 67, 501 77, 501903, C03C 308, C03C 1300, G02B 514

Patent

active

044189850

ABSTRACT:
There is provided a multi-component system glass fiber for optical communication which comprises a multi-component system glass for core having a composition comprising SiO.sub.2, BaO, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, at least one alkali metal oxide selected from Na.sub.2 O, K.sub.2 O and Li.sub.2 O, MgO and CaO in amounts as specified in the specification and claims, and a multi-component system glass for clad layer having a composition comprising SiO.sub.2, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, Na.sub.2 O, K.sub.2 O, Li.sub.2 O, at least one alkaline earth metal selected from MgO and CaO in amounts as specified in the specification and claims. The core in the glass fiber for optical communication according to the present invention shows lower optical loss and the clad layer shows high weathering resistance, and the glass fiber according to the present invention suffers from no devitrification during fiber drawing and is excellent in dimensional stability.

REFERENCES:
patent: 3841882 (1974-10-01), Wolf
patent: 4264131 (1981-04-01), Sawamura et al.
patent: 4265667 (1981-05-01), Ikeda et al.
patent: 4275951 (1981-06-01), Beales et al.
patent: 4367012 (1983-01-01), Ikeda et al.
European Search Report.

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