Research Article
Numerical Simulation of 980 nm-LD-Pumped Yb3+-Er3+-Tm3+-Codoped Fiber Amplifier for 1500 nm and 1600 nm Bands
Table 1
Spectroscopic parameters of Er3+-doped and Tm3+ doped telluride fiber for numerical calculation.
| Parameter | Symbol | Value | Unit | Remarks |
| Core diameter | | 5.0 | m | | Background loss | | 0.1 | dB/m | |
| Spontaneous emission rate (Er3+) | | 172.4 | 1/s | [37] | | 1804.3 | 1/s | | 1000 | 1/s | | 51000 | 1/s | | 51000 | 1/s | | 51000 | 1/s |
| Spontaneous emission rate (Tm3+) | | 311 | 1/s | [37] | | 131 | 1/s |
| Energy transfer rate | | 140 | 1/s | [38] | | 985 | 1/s |
| Transition rate of ASE | | 400 | 1/s | [37] | | 1804.3 | 1/s |
| Pump absorption cross section | | 1.0 × 10-25 | m2 | [38] | | 1.0 × 10-26 | m2 | | 1.0 × 10-25 | m2 |
| Stimulated emission cross section (Er3+) | | 8.6 × 10-25 | m2 | [38] | | 8.5 × 10-25 | m2 |
| Pump emission cross section (Er3+) | | 1.0 × 10-26 | m2 | [38] |
| Stimulated emission cross section (Tm3+) | | 4.5 × 10-25 | m2 | [38] | | 4.5 × 10-25 | m2 | | 8.6 × 10-25 | m2 | | 8.6 × 10-25 | m2 |
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