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A novel 3-stage structure for a low-noise, high-gain and gain-flattened L-band erbium doped fiber amplifier
Author(s): 
Pages: 124-128
Year: Issue:  9
Journal: Journal of Zhejiang University Science B

Keyword:  Erbium doped fiber amplifierThree-stagePumpL-bandFiber optical communication;
Abstract: <正> The configuration of the novel three-stage L-band erbium-doped fiber amplifier with very large and flat gain and very low noise figure presented in this paper uses the forward ASE (amplified spontaneous emission) from the first section of the EDF (erbium-doped fiber) and the backward ASE from the third section of the EDF (both serve as the secondary pump sources of energy) to pump the second EDF. To improve the pump efficiency, the power of the pump is split into two parts (with a ratio of e.g. 2:7). The characteristics of this L-band EDFA are studied on the basis of the Giles Model with ASE.
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