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利用后向ASE抽运一段未抽运光纤和一段不完全抽运光纤两种结构 ,实现了EDFA自发辐射谱向长波方向移动 ,分别得到了 3dB带宽为 5 6 3nm和 4 7 6nm的L 波段自发辐射谱 ,对 1 5 75nm输入信号 (强度为 - 3 0dBm)的增益分别为 3 5dB和 9 2dB
By using the backward ASE to pump an unslotted optical fiber and an incompletely pumped optical fiber, the spontaneous emission spectrum of the EDFA is moved to the long-wave direction, and the L band of 3dB bandwidth of 563 nm and 476 nm is obtained. Emission spectrum, the gain of 1 5 75nm input signal (intensity is -300dBm) are respectively 35dB and 92dB