Magnetoplasmonic Nanoantennas for On-Chip Reconfigurable Optical Wireless Communications

被引:7
|
作者
Damasceno, Gabriel H. B. [1 ]
Carvalho, William O. F. [1 ]
Sodre, Arismar Cerqueira [1 ]
Oliveira Jr, Osvaldo N. [2 ]
Mejia-Salazar, Jorge Ricardo [1 ]
机构
[1] Natl Inst Telecommun Inatel, BR-37540000 Santa Rita Do Sapucai, MG, Brazil
[2] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13560970 Sao Carlos, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
plasmonics; nanoantennas; magnetoplasmonics; beam steering; optical wireless communications; reconfigurable nanoantennas; EMISSION; LIGHT;
D O I
10.1021/acsami.2c19376
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
On-chip wireless communications require optical nanoantennas with dynamically tunable radiation patterns, which may allow for higher integration with multiple nanoantennas instead of two fixed nanoantennas in existing approaches. In this paper, we introduce a concept to enable active manipulation of radiated beam steering using applied magnetic fields. The proposed system consists of a highly directive Yagi-Uda-like arrangement of magnetoplasmonic nanoribs made of Co6Ag94 and immersed in SiO2. Numerical demonstration of the tilting of the radiated beam from the nanoantenna on its plane is provided with full-wave electromagnetic simulations using the finite element method. The tilt direction of the radiated beam can be changed by reversing the magnetization direction, while the conventional plasmonic nanoantenna pattern is recovered by demagnetizing the system. The geometry of the nanoantenna can be tailored to work at optical or infrared wavelengths, but a proof of concept for lambda = 700 nm is conducted for taking advantage of the high magneto-optical activity of Co6Ag94. The design was based on experimental data for materials that can be fabricated via nanolithography, thus permitting magnetically on-chip reconfigurable optical wireless communications.
引用
收藏
页码:8617 / 8623
页数:7
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