激光与光纤的机械对准误差和光束质量下降导致了耦合损失，本文分析了它们对耦合效率的影响。
The alignment of laser beam to fiber end face and degradation of beam quality can increase the coupling losses. This paper analyzes their effects to the coupling efficiency.
该方法与以往所做的对沿光纤传播的包层模式功率的损失特性的简单分析对比，测量结果与理论曲线十分相符。
The method is compared with the simple analysis for loss characteristics of cladding modes propagating through the fiber and the measured results are in good agreement with theoretical curves.
影响传输系统效率的主要因素是激光与光纤的耦合损失。
The main influencing on the efficiency of transmission system is coupling losses.
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