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发明公开
CN107681425A 一种泵浦光源及其构成的光纤放大器 审中-实审

一种泵浦光源及其构成的光纤放大器
摘要：
本发明涉及一种可同时输出单模及多模光的泵浦光源及其构成的光纤放大器。所述泵浦光源，包括多模泵浦激光器、耦合器和模式变换器；所述耦合器的输入端与所述多模泵浦激光器的输出端相连，所述耦合器的第一输出端与所述模式变换器的输入端相连，所述模式变换器的输出端输出单模泵浦光，所述耦合器的第二输出端输出多模泵浦光。所述光纤放大器包括所述泵浦光源和放大光路；所述放大光路包括一级放大光路和二级放大光路，所述泵浦光源输出的单模泵浦光与一级放大光路相连，对信号光进行一级放大；所述泵浦光源输出的多模泵浦光与二级放大光路相连，对一级放大后的信号光进行二级放大。
摘要（英）：

The invention relates to a pump light source capable of outputting single-mode and multi-mode light synchronously and an optical fiber amplifier formed by the same. The pump light source comprises a multi-mode pump laser, a coupler and a mode converter; the input end of the coupler is connected with the output end of the multi-mode pump laser; the first output end of the coupler is connected withthe input end of the mode converter; the output end of the mode converter outputs single-mode pump light; the second output end of the coupler outputs multi-mode pump light; the optical fiber amplifier comprises the pump light source and an amplifying light path; the amplifying light path comprises a first-stage amplifying light path and a second-stage amplifying light path; the single-mode pump light output by the pump light source is connected with the first-stage amplifying light path for performing first-stage amplification on the signal light; and the multi-mode pump light output by the pump light source is connected with the second-stage amplifying light path for performing second-stage amplification on the signal light after first-stage amplification.

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