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Fiber-diameter measurement by occlusion of a Gaussian beam

机译：通过遮挡高斯光束进行纤维直径测量

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The amount of Light occluded by a fiber as it passes through a laser beam can be used as the basis for fiber-diameter measurement. This technique is analyzed with a two-dimensional rigorous model. The occlusion seen for dielectric fibers as a function of their diameter is highly oscillatory owing to interference between the light transmitted by the fiber and the rest of the diffracted field. Scaler diffraction theory is shown to be adequate in modeling this effect. The oscillation sets a limit to the accuracy of simple diameter measurement systems and is confirmed experimentally for glass fibers. However, wool fibers are found to be better treated as an absorbing material. The effect of beam polarization is investigated and found to be negligible for dielectric fibers but significant for metal fibers of small diameter. (C) 1998 Optical Society of America. [References: 17]
机译：纤维在通过激光束时所遮挡的光量可以用作纤维直径测量的基础。使用二维严格模型来分析此技术。由于介电纤维传输的光与其余衍射场之间的干涉，对于介电纤维而言，所见的咬合高度振荡。洁牙机衍射理论显示出足以模拟这种效果。振荡为简单的直径测量系统的精度设置了限制，并已通过玻璃纤维的实验证实。但是，发现羊毛纤维可以更好地用作吸收材料。研究了光束偏振的影响，发现对于介电纤维可以忽略不计，但对于小直径的金属纤维却很明显。 （C）1998年美国眼镜学会。 [参考：17]

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