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首页> 外文期刊>Journal of Electronic Materials >Design of an Optical Switch and Sensor Based on a MIM Coupled Waveguide Using a DNA Composite
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Design of an Optical Switch and Sensor Based on a MIM Coupled Waveguide Using a DNA Composite

机译:基于使用DNA复合材料的MIM耦合波导的光开关和传感器的设计

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摘要

A switchable surface plasmon polariton optical coupled waveguide made by exploiting a DNA composite is proposed in this paper. The switchable DNA element is used for controlling the electric field and transmission line shape. A multiband resonance is obtained for transmission to improve the optical sensing performance. Here, dumbbell-shaped cavity slots are utilized to control the effective length, with two resonances at 960 and 1260 nm for the low-conductivity mode, while there is one peak at 1590 nm for the high-conductivity mode. The DNA element is placed between two conductive silver lines, and thus acts as a switch. The structure can be controlled by switching between the DNA composite conductivity modes, and this ability can be considered for optical gates or switches at 960 and 1500 nm. The resulting switching factor is about 450 at 960 nm. The frequency shift and variation in full width at half maximum are evaluated as two functions for obtaining the sensitivity and figure of merit (FOM) of the refractive index. Therefore, this optical waveguide can be used both as an optical switch and as a refractive index (RI) sensor, with sensitivity of about 1260 nm/RIU and FOM of 120 RIU-1.
机译:一种可切换表面通过利用一个DNA复合材料制成等离子激元光耦合波导在本文提出。可切换DNA元件用于控制电场和传输线的形状。用于传输到提高光学感测性能得到一种多频带共振。这里,哑铃形空腔时隙用于控制的有效长度,与在960两个谐振和用于低电导率模式1260纳米,而有在用于高导电模式1590纳米一个峰。的DNA元件置于两个导电银线之间,并因此用作一个开关。该结构可以通过将DNA复合导电性模式之间切换来控制,而这种能力可在960和1500纳米被考虑用于光闸或开关。将所得的切换因子为约450在960纳米。在半最大频移和变化全宽被评估为两个函数用于获得灵敏度和折射率的优值(FOM)的图。因此,该光波导可以既用作光学开关和作为折射率(RI)传感器,具有大约1260纳米/ RIU和120 RIU-1的FOM的灵敏度。

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