Optical guided waves at graded metal-dielectric interfaces

Brett A. Kruger; Joyce K. S. Poon

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Optical guided waves at graded metal-dielectric interfaces

机译：梯度金属-介电界面的光导波

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Waveguides at interfaces with a linearly graded permittivity between a metal and a dielectric are studied. Analytic expressions for the dispersion relations, modes, losses, and cutoff wavelengths are derived and agree well with simulations. The gradation results in anomalous dispersion, a reduction in the energy velocity, and increased field confinement in the metal-dielectric transition region. These effects lead to increased propagation losses, which are sensitive to the spatial extent of the interface gradation.

机译：研究了金属和电介质之间具有线性梯度介电常数的界面处的波导。推导了色散关系、模态、损耗和截止波长的解析表达式，并与仿真结果吻合良好。这种渐变导致异常色散，能量速度降低，金属-介电过渡区域的场限制增加。这些效应导致传播损耗增加，而传播损耗对界面渐变的空间范围很敏感。

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来源
《Optics Letters》 |2011年第11期|2155-2157|共3页
作者
Brett A. Kruger; Joyce K. S. Poon;
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作者单位

Department of Electrical and Computer Engineering and the Institute of Optical Sciences, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada;

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正文语种英语
中图分类计量学;
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Optical guided waves at graded metal-dielectric interfaces

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