US 2025/0333349 A1 · Aluminosilicate Glasses with High Er3+ Concentration and High Quantum Yield

Abstract

Glasses with high Er2O3 concentration that exhibit low concentration quenching and low hydroxyl quenching of the emission of Er3+ near 1550 nm are described. The glasses include Al2O3 and optically non-interfering lanthanide components to disperse Er2O3 to minimize clustering of Er3+ ions as the concentration of Er2O3 in the glass composition increases to mitigate concentration quenching. Hydroxyl quenching is mitigated by calcining the batch components before melting and including a reducing agent in the batch composition. Optical fibers with cores made from the glasses exhibit high gain, low bending loss, and uniform gain across the C-band.

Claims20

Dependent claims

A glass having a composition comprising:

66.0-95.0 mol. % SiO2;
10.0-30.0 mol. % Al2O3;
0.0-2.0 mol. % B2O3;
0.0-20.0 mol. % Na2O;
0.0-4.0 mol. % ZnO;
0.0-20.0 mol. % La2O3;
0.0-20.0 mol. % Y2O3;
0.0-3.5 mol. % Yb2O3;
0.1-5.0 mol. % Er2O3;
0.0-7.0 mol. % F;
wherein the composition satisfies the conditions:
1.
≤
Al
2
⁢
O
3
Y
2
⁢
O
3
+
La
2
⁢
O
3
+
Gd
2
⁢
O
3
+
Er
2
⁢
O
3
+
Yb
2
⁢
O
3
+
Lu
2
⁢
O
3
≤
20.
0.1
≤
Y
2
⁢
O
3
+
La
2
⁢
O
3
+
Gd
2
⁢
O
3
+
Yb
2
⁢
O
3
+
Lu
2
⁢
O
3
≤
20.
.

86 more elements

Dependencies are inferred from the claim text.

Aluminosilicate Glasses with High Er3+ Concentration and High Quantum Yield

Life of this patent

Aluminosilicate Glasses with High Er3+ Concentration and High Quantum Yield

Life of this patent

Abstract

Claims20