OPTICAL FIBERS FORMED OF ALUMINUM BOROPHOSPHATE GLASS COMPOSITIONS

摘要

Novel optical fibers are formed from glass compositions enclosed by the iso-composition lines, 2 and 18 mole percent P2O5, 30 and 70 mole percent A12O3 and 20 nnd 60 mole percent B2O3 or glass compositions bounded by lines connecting the corpositions 28 m% A12O3 - 72 m% P2O5 - 0 m% B2O3; 5 m% A12O3 - 45 m% P2O5 - 50 m% B2O3; 10 m% A12O3 - 30 m% P2O5 60 m% B2O3 and 42 m% A12O3 - 58 m% P2O5 - 0 m% B2O3. The glass compositions forming the optical fibers can contain the usual oxide modifiers.