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报道了一种基于掺铒光纤的两级宽带光源.通过采用双通结构和循环利用C波段放大自发辐射,极大地节省了用于产生L波段放大自发辐射所需的泵光功率.利用一支啁啾布拉格光栅作为光谱平坦器,实现了76 nm的平坦输出光谱.
A two-stage broadband light source based on erbium-doped fiber is reported, which greatly saves pump power required for generating L-band amplified spontaneous emission by adopting a double-pass structure and recycling C-band self-sustained radiation. Chirped Bragg Gratings as spectral flatters achieve a flat output spectrum of 76 nm.