]>Numerical Simulation of 980 nm-LD-Pumped Yb<sup>3+</sup>-Er<sup>3+</sup>-Tm<sup>3+</sup>-Codoped Fiber Amplifier for 1500 nm and 1600 nm Bands : Figure 5
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Figure 5: Effect of pump power on gain spectra. Concentrations of Yb3+, Er3+, Yb3+ ion are 20.0 × 1024, 1.0 × 1024, 3.0 × 1024 ions/m3, respectively. Fiber length, input signal power are 1.5 m, − 30 dBm, respectively.