The coupling efficiency comes to 3%.
耦合效率达到3%左右。
The use of the lensed fiber can improve the coupling efficiency and alignment tolerance greatly.
通过这项技术，可以有效提高光纤输出耦合效率和容忍度。
The coupling efficiency of the amplifier and the factors affecting the output power improvement are investigated.
研究光纤放大器的耦合效率以及影响输出功率的因素。
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