A randomly coupled 12-core erbium-doped fiber amplifier (EDFA) operating in the C- or L-band is investigated. We experimentally demonstrate that both C and L-band operation can be supported with the 12-core EDFA by adjusting the erbium-doped fiber (EDF) length. Evaluations of the amplification characteristics of the proposed EDFA showed that a modal gain of more than 20 dB or 15 dB, a noise figure of about 5 dB or 6 dB, and a mode-dependent loss penalty of less than 1 dB or 2 dB were respectively obtained over the whole C-band (1530–1565 nm) or L-band (1570–1605 nm) with 8- or 60-m EDF. Transmission experiments showed the applicability of our EDFAs for inline amplified transmission systems. We also examined the impact of MDL on the power efficiency of the randomly coupled multi-core EDFA for achieving power-efficient long-distance SDM transmission.

中文翻译：

---

随机耦合的12芯掺b光纤放大器的特性

研究了在C波段或L波段工作的随机耦合的12芯掺-光纤放大器（EDFA）。我们通过实验证明，通过调整掺ped光纤（EDF）的长度，可以使用12芯EDFA支持C和L波段操作。对所提出的EDFA的放大特性的评估表明，模态增益大于20 dB或15 dB，噪声系数约为5 dB或6 dB，与模式有关的损耗损失小于1 dB或2 dB分别在8或60 m EDF的整个C波段（1530–1565 nm）或L波段（1570–1605 nm）上获得。传输实验显示了我们的EDFA在串联放大传输系统中的适用性。我们还研究了MDL对随机耦合的多核EDFA的电源效率的影响，以实现省电的长距离SDM传输。