1 December 2007 Gain-enhanced double-pass long-wavelength-band erbium-doped fiber amplifier using backward pumping
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Optical Engineering, 46(12), 124203 (2007). doi:10.1117/1.2821422
We propose and demonstrate a novel high-gain-efficiency long-wavelength band (L-band) erbium-doped fiber amplifier with a double-pass backward-pump configuration, in which the strong backward C-band amplified spontaneous emission is effectively utilized. The L-band gain is greatly enhanced in comparison with the copumped configuration. Without using any excessive components, the new configuration can provide the same gain as the conventional configuration, but only using 40% pump power. Meanwhile, the noise figure is also effectively improved under the low pump power.
Liang Xing, Li Zhan, Lilin Yi, Yuxing Xia, "Gain-enhanced double-pass long-wavelength-band erbium-doped fiber amplifier using backward pumping," Optical Engineering 46(12), 124203 (1 December 2007). https://doi.org/10.1117/1.2821422


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