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报道了利用双向抽运单级掺铒光纤结构研制的高效率C+L波段放大自发辐射(ASE)宽带光源。实验表明,该结构在一定的掺铒光纤长度范围内,均可通过调节前后向抽运功率来获得带宽达80 nm(1525~1605 nm)光谱平坦的C+L波段宽带光源。光源的抽运转换效率与掺铒光纤长度、前后向抽运功率分配有关。选择所需的最短掺铒光纤长度制作光源,既可以节省光纤,降低成本,还可以提高抽运转换效率。利用该光源结构获得了输出功率为13.5 dBm,抽运转换效率达23.2%的高效率C+L波段放大自发辐射宽带光源。
Reported a high efficiency C + L band amplified spontaneous emission (ASE) broadband light source developed by bidirectional pumping single-stage erbium-doped fiber structure. Experiments show that the C + L band broadband light source with bandwidth of 80 nm (1525 ~ 1605 nm) can be obtained by adjusting the pump power in both forward and backward directions within a certain range of erbium - doped fiber length. The pumping efficiency of the light source is related to the length of the erbium-doped fiber and the power distribution of the pump forward and backward. Choosing the shortest required erbium-doped fiber length to make a light source saves fiber, reduces costs, and improves pumping efficiency. The high efficiency C + L band amplified spontaneous emission broadband light source with output power of 13.5 dBm and pumping efficiency of 23.2% was obtained by using the light source structure.