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基于对增益和噪声特性的分析,本文实现了长距离宽带传输系统中由分布拉曼放大器和掺铒光纤放大器中组成的宽带混合放大单元,井提出了混合放大器进行优化设计的方法,特别指出适当调整拉曼放大器和掺铒光纤放大器的增益谱可以实现噪声谱的平坦.
Based on the analysis of gain and noise characteristics, this paper implements a broadband mixed amplification unit composed of distributed Raman amplifier and erbium-doped fiber amplifier in long-distance broadband transmission system, and puts forward a method for optimizing the design of hybrid amplifier. In particular, Adjusting the gain spectrum of Raman amplifiers and erbium-doped fiber amplifiers results in a flat noise spectrum.