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首页> 外文期刊>new journal of physics >Coupling between guided modes of two parallel nanofibers
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Coupling between guided modes of two parallel nanofibers

机译：两种平行纳米纤维的引导模式之间的耦合

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摘要

We study the coupling between the fundamental guided modes of two identical parallel nanofibers analytically and numerically. We calculate the coefficients of directional coupling, butt coupling, and self coupling as functions of the fiber radius, the light wavelength, and the fiber separation distance. We show that, due to the symmetry of the system, a mode of a nanofiber with the principal quasilinear polarization aligned along the axis joining the nanofibers or the perpendicular axis is coupled only to the mode with the same corresponding principal polarization of the other nanofiber. We find that the effects of the butt coupling and the self coupling on the power transfer are significant when the fiber radius is small, the light wavelength is large, or the fiber separation distance is small. We show that the power transfer coefficient may achieve a local maximum or become zero as the fiber radius, the light wavelength, or the fiber separation distance varies.
机译：我们研究了两种相同的平行纳米纤维的基本引导模式之间的耦合。我们计算定向耦合、对接耦合和自耦合的系数作为光纤半径、光波长和光纤间隔距离的函数。我们表明，由于系统的对称性，纳米纤维的模式，其主准线性极化沿连接纳米纤维的轴或垂直轴对齐，仅耦合到具有相同对应主极化的模式另一个纳米纤维。我们发现，当光纤半径小、光波长大或光纤间隔距离小时，对接耦合和自耦合对功率传输的影响显著。我们表明，随着光纤半径、光波长或光纤间隔距离的变化，功率传输系数可能达到局部最大值或变为零。

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