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Study on coupling structures for dielectric slot waveguides and hybrid plasmonic waveguides

机译:介电槽波导和混合等离子体波导耦合结构研究

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摘要

A type of compact, highly efficient optical coupler for dielectric slot waveguides and hybrid plasmonic waveguides based on transition layers was investigated. The power-coupling efficiency of 75% for the direct coupling case increased to 90% by the insertion of an intermediate section. By performing time-averaged Poynting vector analysis, we successfully separated the factors of transmission, reflection, and radiation at the coupler interface. We found that the insertion of optimal air grooves into the coupler structure contributed to the improvement of coupling performance. The proposed compact structure is characterized by a high transmission efficiency, low reflection, and high field confinement.
机译:研究了一种用于介电槽波导和基于转变层的混合等级波织物的紧凑型高效的光学耦合器。 直接耦合壳体的功率耦合效率为75%,通过插入中间部分增加到90%。 通过执行时间平均的Poynting Vector分析,我们成功地分离了耦合器界面处的传输,反射和辐射的因素。 我们发现,将最佳空气凹槽插入耦合器结构有助于提高耦合性能。 所提出的紧凑结构的特征在于高传输效率,低反射和高场限制。

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