This paper presents a rigorous theoretical analysis of a thulium doped fiber amplifier (TDFA) operating at around 1900 nm. The performance of the amplifier is analyzed based on the concentration of Tm³⁺ ions, TDF length, and the pumping power, respectively. A broadband gain of around 41 dB is demonstrated for a Tm³⁺ doped fiber length of 10 m, and an optimized pump power of 400 mW, while employing an in‐band pumping scheme. The minimum noise figure of 4.15 dB is achieved within a broad bandwidth of around 120 nm.

中文翻译：

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基于带内抽运方案的掺ul光纤放大器的理论分析

本文对工作在1900 nm附近的掺do光纤放大器（TDFA）进行了严格的理论分析。分别基于Tm ³⁺离子的浓度，TDF长度和泵浦功率来分析放大器的性能。在采用带内泵浦方案的情况下，对于10m的Tm ³⁺掺杂光纤和400mW的优化泵浦功率，宽带增益约为41 dB 。在约120 nm的宽带宽内可达到4.15 dB的最小噪声系数。