This paper analyses the causes of coupling loss produced by self-focusing lens used in passive fiber components, solutions are proposed to such causes.

本文分析了光纤无源器件中使用的自聚焦透镜产生耦合损耗的原因，并提出了解决办法。

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The manufacturing process of fiber cord coupled with self-focusing lens by using optical alignment is presented, its application is described as well.

文中还介绍了采用光学对中法将光纤与自聚焦透镜耦合成自聚焦透镜光纤软线的制作过程及其应用。

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