用修正速率方程研究掺铒光纤放大器中相对population inversion和增益的温度依赖性
An investigation of the temperature dependency of the relative population inversion and the gain in EDFAs by the modified rate equations
摘要：
采用修正的速率方程模型，在980 nm和1470 nm泵浦条件下，研究了考虑放大自发发射（ASE）效应的掺铒光纤放大器（EDFA）中相对布居数反转与温度和截面的关系。在0 ~+50 ° C温度范围内，在不同的信号波长下，详细研究了这两种情况下增益随泵浦功率的温度和截面的变化特性。结果表明，无论是在室温还是在0 ~+50 ℃的温度范围内，980 nm泵浦的EDFA性能对温度的依赖性都比1470 nm泵浦的要弱。然而，在宽的温度范围和高泵浦功率下，在1470 nm的泵浦波长下的EDFA的性能比980 nm的更有效。该理论模型的计算结果与文献中的实验结果吻合较好。
英文摘要：
The dependence of the relative population inversion in Er3+-doped fiber amplifiers (EDFAs) upon temperature and cross sections, taking into account the amplified spontaneous emission (ASE), are investigated theoretically by the modified rate equation model for 980 nm and 1470 nm pumping conditions. For the temperature range from 0 to +50 oC and at the different signal wavelengths, the temperature and cross section dependent gain characteristics with respect to pump powers are also examined in detail for the both conditions. As a consequence, the dependence of the performance of EDFAs on temperature for 980 nm pumping is weaker than that for 1470 nm pumping, not only at room temperature but also at the temperature range of 0 to +50 oC. However, the performance of EDFAs is more efficient at the pumping wavelength of 1470 nm than that of 980 nm for a wide range of temperature and high-pump powers. The results of this theoretical model are a good agreement with the experimental ones in the literature.
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