A Novel Method for Multi-Pumped Fibre Raman Amplifier Gain Adjustment |
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作者姓名: | 韩群 宁继平 陈志强 尚连聚 |
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作者单位: | LaboratoryforPhotoelectronicInformationScienceandTechnology(MinistryofEducation),TianjinUniversity,Tianjin300072 |
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摘 要: | A novel method for gain adjustment of multi-pumped fibre Raman amplifiers is proposed and numerically demonstrated. The method uses the areas under the curves of the pump power evolution along the gain fibre and the Newton-Raphson method to find an appropriate power combination of the pumps to realize the desired gain profile. Compared with the previously proposed methods, our method has two advantages: first, it can maintain the gain profile while changing the gain magnitude to the desired value; second, it is independent of the actual pumping scheme of the amplifier, i.e. it can be used for fibre Raman amplifiers with all kinds of pumping schemes including co-, counter-, or hi-directional pumping. Numerical simulations are provided to verify the proposed method and to demonstrate its effectiveness.
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关 键 词: | 增益调整 多泵光纤拉曼放大器 数字仿真 功率演化 |
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