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首页> 外文期刊>Applied optics >Fabrication of a graded-index polymer optical fiber preform without a cavity by inclusion of an additional monomer under a centrifugal force field
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Fabrication of a graded-index polymer optical fiber preform without a cavity by inclusion of an additional monomer under a centrifugal force field

机译：通过在离心力场下包含其他单体来制备无空腔的渐变折射率聚合物光纤预制棒

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摘要

When two or more monomers with different densities and refractive indices are polymerized under a centrifugal force field, a radially varying refractive index is generated owing to the difference in density of the monomers. After the polymerization is completed, a cavity is generated about the rotational axis as a result of inherent volume shrinkage during bulk radical polymerization. Therefore it is necessary to feed an additional monomer into the cavity to compensate for the undesirable volume shrinkage. We have successfully fabricated a preform with graded indices for polymer optical fiber without a cavity by adding another monomer during rotation of the reactor. One can control the overall refractive-index profile by changing the rotation speed. Furthermore, the refractive-index profile can be predicted as a function of rotating speed by use of a simple mathematical model. (C) 2002 Optical Society of America. [References: 21]
机译：当两种或更多种具有不同密度和折射率的单体在离心力场下聚合时，由于单体密度的差异而产生径向变化的折射率。聚合完成后，由于本体自由基聚合过程中固有的体积收缩，在旋转轴周围会产生空腔。因此，有必要将另外的单体进料到腔体中以补偿不希望的体积收缩。通过在反应器旋转过程中添加另一种单体，我们已经成功地制造了具有渐变指数的无光纤聚合物光纤预制棒。可以通过改变转速来控制整体折射率分布。此外，可以通过使用简单的数学模型来预测折射率分布作为转速的函数。 （C）2002年美国眼镜学会。 [参考：21]

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