Table 2 Simulation parameters for Er3+ doped cores.
Quantity | Symbol | Value | Unit |
|---|---|---|---|
Thulium concentration | NEr | 8.37 × 1025 | m−3 |
Fiber length | Lf | 0.25 | m |
Core radius | rc | 7.5 | µm |
Pumping wavelength | λexc | 980 | nm |
Lifetime of level 4I13/2 | τ4 | 7991 | µs |
Probability of spontaneous transition 4I11/2 → 4I15/2 | A31 | 163.1947 | s−1 |
Probability of spontaneous transition 4I11/2 → 4I13/2 | A32 | 3.29 × 10−21 | s−1 |
Maximum emission cross-section (Er) | σa3 | 5.28 × 10−21 | cm2 |
Maximum absorption cross-section (Er) | σe3 | 12.89 × 10−21 | cm2 |
Pump absorption coefficient at 980 nm | αEr | 0.9148 | cm−1 |
