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首页> 外文会议>Physics and simulation of optoelectronic devices XXIII >Plasmonic waveguides in Mid infra-red using silicon- insulator-silicon
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Plasmonic waveguides in Mid infra-red using silicon- insulator-silicon

机译：使用硅-绝缘体-硅的中红外等离子波导

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摘要

The mid-infrared (MIR) region is one of the most thriving spectral regions as it contains the vibrational resonances of several molecules of interest, as well as the absorption bands for hot bodies. In this work, we propose a novel dielectric waveguide that confines the light in a nanoscale air gap. This dielectric waveguide is a suitable candidate for on-chip sensing. Detailed dispersion analysis of this 3D waveguide is also provided. The effect of the refractive index change in the gap is studied and shows very high sensitivity and causes significant changes in the modal parameters. We also show that these waveguide modes exhibit plasmonic-like characteristics at the MIR region with controllable plasma frequency, without the inclusion of any metals. This waveguide is also utilized in various on-chip applications with nanoscale confinement at the MIR region.
机译：中红外（MIR）区域是最繁荣的光谱区域之一，因为它包含几个感兴趣的分子的振动共振以及热体的吸收带。在这项工作中，我们提出了一种新颖的介质波导，它将光限制在纳米级的气隙中。该介电波导是片上感测的合适候选者。还提供了此3D波导的详细色散分析。研究了间隙中折射率变化的影响，并显示出很高的灵敏度，并引起模态参数的显着变化。我们还表明，这些波导模式在MIR区域具有可控的等离子体频率，呈现出类似等离子体的特性，而没有包含任何金属。该波导还用于在MIR区域进行纳米级限制的各种片上应用中。

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