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本文详细地阐述了多模光纤间利用透镜进行耦合时产生耦合损耗的机理。提出了一种分析这种耦合损耗的方法,研究结果表明,这种耦合系统的耦合损耗主要来自透镜的球差,如果能有效地控制透镜的球差,就能减小这种耦合系统的耦合损耗。
This paper describes in detail the mechanism of the coupling loss between the multimode fibers when they are coupled by the lens. A method of analyzing the coupling loss is proposed. The results show that the coupling loss of the coupled system mainly comes from the spherical aberration of the lens. If the spherical aberration of the lens can be effectively controlled, the coupling of the coupled system can be reduced loss.