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Controllable Surface Plasmon Polariton Propagation Length Using a Suitable Quantum Dot Material
Brazilian Journal of Physics ( IF 1.6 ) Pub Date : 2024-02-20 , DOI: 10.1007/s13538-024-01425-x
Watheq F. Shneen , Sabah M. M. Ameen

The hybrid surface plasmon polariton waveguide (HSPPWG) can carry and manipulate optical signals in nanoscale conduits. As a type of plasmonic waveguide, the HSPPWG helps designers to increase speed and develop high-density interlayer connections in order to improve network bandwidth and data transmission rates for future optical communication networks. The HSPPWG is a versatile photonics and integrated optics platform because of its unique characteristics. To achieve high efficiency, the quantum dot (QD) was used in the proposed structure and simulated it with the COMSOL Multiphysics software together with MATLAB. The main objective of the study is to increase the propagation length compared to conventional structure (without QD) while maintaining good quantitative confinement according to the figure of merit (FoM) test and confinement factor. We show that the confinement factor (Γ) at n2D of 17.8 × 1010 cm−2 and QDisk of 3 nm height provides superior confinement compared to QDisk heights 2 nm and 4 nm. The figure of merit at 1550 nm is approximately 105, outperforming the FoM value in the traditional case without quantum dots. The FoM at most wavelengths exceeds that of the traditional state. The propagation length (Lp) values at a QDisk height of 3 nm are 38 µm and 32 μm at 1550 nm and 1300 nm, respectively. The Lp of the SPP in the HSPPWG did not show a significant increase at wavelengths 1300 nm and 1550 nm. Therefore, we replaced the used InP semiconductors with other semiconductor materials such as AlGaAs. The Lp at the wavelength of 1550 nm reached 67.7 μm at a refractive index of 3.0238.



中文翻译:

使用合适的量子点材料可控表面等离子体激元传播长度

混合表面等离子体激元波导(HSPPWG)可以在纳米级管道中传输和操纵光信号。作为一种等离子体波导,HSPPWG 可帮助设计人员提高速度并开发高密度层间连接,以提高未来光通信网络的网络带宽和数据传输速率。HSPPWG 因其独特的特性而成为多功能光子学和集成光学平台。为了实现高效率,在所提出的结构中使用了量子点(QD),并使用 COMSOL Multiphysics 软件和 MATLAB 对其进行了仿真。该研究的主要目标是与传统结构(无 QD)相比增加传播长度,同时根据品质因数 (FoM) 测试和限制因子保持良好的定量限制。我们表明,与高度为 2 nm 和 4 nm 的 QDisk 相比,17.8 × 10 10 cm -2的n 2D处的限制因子(Г)和 3 nm 高度的 QDisk 提供了更好的限制。1550 nm 处的品质因数约为 105,优于没有量子点的传统情况下的 FoM 值。大多数波长下的 FoM 都超过了传统状态。QDisk 高度为 3 nm 时的传播长度 ( L p ) 值在 1550 nm 和 1300 nm 处分别为 38 µm 和 32 µm。HSPPWG 中 SPP 的 L p 在波长 1300 nm 和 1550 nm 处没有显示出显着增加因此,我们用 AlGaAs 等其他半导体材料替代了所使用的 InP 半导体。波长1550 nm处的L p达到67.7 μm 折射率为3.0238。

更新日期:2024-02-21
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