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US 6,636,347 B1Granted
Phosphorus-silicate fibers suitable for extended band amplification
AssigneeCorning Incorporated
InventorsJi Wang, Gang Qi, Carlton M. Truesdale, Douglas E. Goforth, John D. Minelly, Jeffrey T. Kohli, Michael Thomas Murtagh
Life of this patent
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Abstract
An optically active phosporus-silicate glass when pumped to directly excite Er ions, provides gain in 1565 nm to 1620 nm range and comprises in weight percent: SiO2 50 to 92%; Er2O3 0.01 to 2%; P2O5 greater than 5%; and Al2O3 0.0 to 0.3%.
Claims30
An optically active phosphorus-silicate glass comprising in weight percent:
- SiO2 50 to 92%;
- Er2O3 0.01 to 2%;
- P2O5 greater than 5%;
- and Al2O3 0.0 to 0.245%, wherein said optically active glass is pumped to directly excite most Er ions and provides gain in 1565 nm to 1620 nm range.
1 more element
An optically active phosphorus-silicate glass comprising in weight percent:
- SiO2 50 to 92%;
- Er2O3 0.01 to 2%;
- P2O5 greater than 5%;
- and Al2O3 0.0 to 0.3%, wherein said optically active glass is pumped to directly excite Er ions provides gain in 1565 nm to 1620 nm range, wherein the concentration of Al2O3 is ≦0.1 wt % and the amount of P2O5 is greater than 15 wt %.
1 more element
An optically active glass comprising in weight percent:
- SiO2 50 to 92%;
- E2O3 0.01 to 1%;
- P2O5 greater than 5%;
- Al2O3 0 to 0.245%;
- and
- one or more of the following elements to increase the index of refraction Ge, Y;
- Ga;
- Ta in the amount of 0.1 to 20%;
- wherein said optically active glass is pumped to directly excite most rare earth ions and provides gain in 1565 nm to 1620 nm range.
6 more elements
Dependencies are inferred from the claim text.