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首页> 外文期刊>Physica, B. Condensed Matter >Hydrodynamically controlled optical propagation in a nematic fiber
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Hydrodynamically controlled optical propagation in a nematic fiber

机译:向列纤维中的水动力控制光传播

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We show that a cylindrical guide whose core is a liquid crystal (LC), having initially the escaped configuration, can be mechanically cylinder, are able to significantly alter the propagation of the optical fields. Above certain critical pressure, the fiber only conducts the optical beams within two coaxial but unconnected regions, where the light can propagate independently. We demonstrate this result by using two complementary formalisms. For multimodal waveguides in the small wavelength limit and by performing exact numerical calculation of the transverse magnetic (TM) modes distribution in the guide. The last calculation not only corroborates the asymptotic results of the geometrical analysis, but evinces the way in which the signals propagating in each region overlap and interact each other, when their wavelength are larger than the regions thickness. (c) 2007 Elsevier B.V. All rights reserved.
机译:我们显示了一个圆柱导向器,其核心是液晶(LC),最初具有逃逸配置,可以机械地制成圆柱体,能够显着改变光场的传播。在一定的临界压力之上,光纤仅在两个同轴但未连接的区域内传导光束,在该区域中光可以独立传播。我们通过使用两种互补的形式主义来证明这一结果。对于在小波长范围内的多峰波导,并通过对波导中的横向磁(TM)模分布进行精确的数值计算。最后的计算不仅证实了几何分析的渐近结果,而且说明了当每个信号的波长大于区域厚度时,在每个区域传播的信号相互重叠并相互作用的方式。 (c)2007 Elsevier B.V.保留所有权利。

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