Abstract Behavior of the step-index plastic optical fibers (SI POFs) is examined in a straight-curved configuration for various launching conditions and fiber curvature. This was achieved by applying the power flow equation to calculate the power distribution at the end of the straight fiber segment that precedes the curved one, allowing calculation of the power loss for the latter. We have shown that a small bend radius (r

中文翻译：

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阶跃折射率塑料光纤弯曲损耗的理论研究

摘要 阶跃折射率塑料光纤 (SI POF) 的行为在各种发射条件和光纤曲率的直线弯曲配置中进行了检查。这是通过应用功率流方程计算弯曲光纤段之前的直光纤段末端的功率分布来实现的，从而可以计算后者的功率损耗。我们已经证明小弯曲半径 (r