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Graphene plasmon propagation on corrugated silicon substrates

机译:石墨烯等离子体激元在波纹硅衬底上的传播

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The scheme of graphene on a silicon substrate is potentially compatible to the microelectronic technology. But the maintained plasmons have considerable ohmic loss because of silicon's large permittivity. We introduce air grooves in the silicon surface to reduce the optical thickness of substrate and hence decrease the propagation loss. The properties of graphene plasmons on the corrugated substrates are numerically investigated, in terms of the photon frequency and the geometrical parameters of the corrugated layer, considering both ohmic loss and scattering loss. The plasmons propagation lengths for the corrugated substrates can exceed twice of those for flat silicon in a broadband in mid-infrared. This study may be useful for designing of compact mid-infrared waveguides based on graphene for future photonic integrated circuits. (C) 2014 Optical Society of America
机译:硅基板上的石墨烯方案可能与微电子技术兼容。但是由于硅的介电常数大,维持的等离子体激元具有相当大的欧姆损耗。我们在硅表面引入了空气凹槽,以减小基板的光学厚度,从而降低传播损耗。考虑到欧姆损耗和散射损耗,根据瓦楞纸的光子频率和几何参数,对瓦楞纸上石墨烯等离子体激元的性质进行了数值研究。波纹基板的等离激元传播长度可以超过中红外宽带中平板硅的等离激元传播长度。这项研究对于为未来的光子集成电路设计基于石墨烯的紧凑型中红外波导可能是有用的。 (C)2014年美国眼镜学会

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