Comparing to the typical extraction method, ase is easy to operate with high efficiency and short timing and high recovery rate and less solvent, which decrease the second environmental pollution.

与传统萃取技术相比，ASE技术具有操作简单、萃取效率高、萃取时间短、回收率高、所需溶剂用量少、对环境二次污染小等优势。

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The model of EDFA that has been made is modified by considering the base loss of erbium-doped fiber and ase. The rate equations and propagation equations that have been modified are given.

本文所建立的EDFA的理论模型考虑了ASE和光纤的本征衰耗，修改了速率方程和传输方程。

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