Three-dimensional plasmonic nano-router via optical antennas

Nanophotonics

article

Yi Xu¹  Baowei Gao²  Axin He¹  Tongzhou Zhang¹  Jiasen Zhang¹ 

[1] State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University;Institute of Navigation and Control Technology, China North Industries Group Corporation;Peking University Yangtze Delta Institute of Optoelectronics

关键词: integrated optics;    optical slot antenna pairs;    plasmonic circuit;    plasmonics;    router;   

DOI  :  10.1515/nanoph-2021-0094

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

A three-dimensional (3D) nanoscale optical router is a much-desired component in 3D stacked optical integrated circuits. However, existing 3D routers based on dielectric configurations suffer from large footprints and nanoscale routers based on plasmonic antennas only work in a 2D in-plane scene. Here, we propose and experimentally demonstrate cross-layered all-optical 3D routers with nanoscale footprints. Optical slot antenna pairs are used to realize the routing of plasmonic signals between different layers for arbitrary direction in a broadband wavelength range. The routers are also integrated with waveguide directly for exploring further applications. Based on these router elements, a 3D network of optical butterfly interconnection is demonstrated for multi-directional all-optical data communication. The proposed configuration paves the way for optical cross-layer routing on the nanoscale and advances the research and applications for 3D plasmonic circuits with high integration density in the future.

【 授权许可】

CC BY