Design of a Miniaturized Dielectric Nanoantenna and Synthesis of a Two-Dimensional Nanophotonic Array Based on Particle Swarm Optimization

Zhiyu Xing, Peng Yang, Feng Yang, Chuang Yan, T. Dong
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引用次数: 0

Abstract

We propose a miniaturized dielectric nanoantenna based on the CMOS compatible silicon-on-insulator (SOI) technology and synthesize a two-dimensional nanophotonic array using PSO algorithm. The size of the dielectric grating element antenna working at an infrared wavelength of 1550 nm is ${2.73} {\mu} \text{m} {\times 0.93\mu} \text{m}({1.76\lambda\times 0.6\lambda})$, which is the smallest size to date. The two-dimensional nanophotonic array is demonstrated with an aperture size of ${74.4\mu} \text{m}{\times 74.4\mu} \text{m}{(48\lambda\times 48\lambda)}$, achieving a sidelobe level of −15 dB. The most highlight is that it can avoid the appearance of grating lobes with a minimum element spacing limit of ${1.8\lambda}$,
基于粒子群优化的微型化介质纳米天线设计及二维纳米光子阵列合成
提出了一种基于CMOS兼容绝缘体上硅(SOI)技术的小型化介质纳米天线,并利用粒子群算法合成了二维纳米光子阵列。在1550 nm红外波段工作的介质光栅元件天线尺寸为${2.73} {\mu} \text{m} {\times 0.93\mu} \text{m}({1.76\lambda\times 0.6\lambda})$,是目前最小的尺寸。该二维纳米光子阵列孔径为${74.4\mu} \text{m}{\times 74.4\mu} \text{m}{(48\lambda\times 48\lambda)}$,旁瓣电平为−15 dB。最突出的是它可以避免光栅瓣的出现,最小单元间距限制为${1.8\lambda}$;
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