高功率光子晶体光纤放大器实验研究

利用掺Yb³⁺的光子晶体光纤作为光纤放大器的增益介质，采用反向抽运方式，分别从理论和实验方面研究了不同信号的增益特性，在信号光功率为6W，抽运光功率为160W时，获得了104W的输出功率.实验发现，当抽运功率大于一定值时，放大器输出会有一定的不稳定性，并影响输出功率的进一步提高. 关键词： 光子晶体光纤 光纤放大器 反向抽运 高功率

Experimental study of characteristics of high power photonic crystal fiber amplifier

The gain characterization of photonic crystal fiber amplifier is theoretically and experimentally studied by using reverse pumping technique. The gain curves for different pumping powers and different signal lights are obtained experimentally. When the power of the probe light is 6W and the pump power is 160W，the output power up to 104W，has been achieved eventually. It is found in the experiment that when the pump power is increased over a certain value，the output of the amplifier evolves into the unstable state，which in turn degrades the system performance.