1-1 Cop
yri
gh
t W
an
g Y
an
2009-7-21
Optical fiber
communications 第三节 EDFA的工作特性
Energy Diagram of Erbium Ions in Silica Glass
Er的原子序数为 68，原子量 167.2，价电子 3，属镧系元素。
1-2 Cop
yri
gh
t W
an
g Y
an
2009-7-21
Optical fiber
communications
A.The discreet states of isolated erbium ions
are broadened into bands by
inhomogeneous stark splitting.
B.The distribution of company within the
bands is thermal.
C.The net effect is amplification between
1525 and 1570nm,but the gain is not flat.