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DNA implementation for optical waveguide as a switchable transmission line and memristor

机译：DNA实现作为可转换传输线和忆阻器的光波导

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摘要

In this paper, an optical waveguide has been developed based on the (Deoxyribonucleic acid) DNA core as a multi-slab structure by switching characteristic at 300 THz. We show that how the DNA with various electrical characteristics can be considered as a reconfigurable material which is placed between two optical metal layers. Therefore, we can control the current and voltage density values based on the divergence of the DNA types as an optical switch. Moreover, we can select the Au and Ag for the metal coat. In this research, we demonstrate that the Ag/DNA/Ag and Au/DNA/Ag have better performance in switching qualification than Au/DNA/Au model as a conventional structure. This DNA core waveguide has a switchable feature which cannot be found at any conventional plasmonic waveguide. The FDTD time domain is used for simulating the waveguide and the current density is considered as an ON/OFF switch. We carry out parametric studies for the physical dimensions of the waveguide and illustrate that how we can improve the switching characteristic. Moreover, we have checked the coupling effect between the transmission lines and defined the figure of merit for switching quality. This structure can be considered as an optical memristor and optical "YES" gate which couldn't be obtained by other graphene waveguide while it became feasible based on DNA switching feature.
机译：在本文中，通过在300 THz处切换特性，开发了一种基于（脱氧核糖核酸）DNA核的多板结构光波导。我们证明了如何将具有各种电特性的DNA视为放置在两个光学金属层之间的可重构材料。因此，我们可以根据DNA类型的不同来控制电流和电压密度值，作为光开关。此外，我们可以选择金和银作为金属涂层。在这项研究中，我们证明与传统结构的Au / DNA / Au模型相比，Ag / DNA / Ag和Au / DNA / Ag具有更好的转换合格性能。这种DNA核心波导具有可切换的功能，这在任何常规的等离子波导中都找不到。 FDTD时域用于模拟波导，并且电流密度被视为ON / OFF开关。我们对波导的物理尺寸进行了参数研究，并说明了如何改善开关特性。此外，我们检查了传输线之间的耦合效应，并定义了开关质量的品质因数。这种结构可以被认为是光学忆阻器和“ YES”门，这是其他石墨烯波导无法获得的，但基于DNA转换特性却变得可行。

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