Enhanced transmission through sub-wavelength aperture in specific frequency band by using topology optimized metamaterials

被引：1
作者：
Shi, Pengfei [1 ]
Cao, Yangyang [1 ]
Zhao, Hongge [1 ]
Gao, Renjing [2 ]
Liu, Shutian [2 ]
机构：
[1] Dalian Maritime Univ, Coll Marine Elect Engn, Dalian 116026, Peoples R China
[2] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China
来源：
OPTICS EXPRESS | 2020年 / 28卷 / 21期
基金：
中国国家自然科学基金;
关键词：
EXTRAORDINARY OPTICAL-TRANSMISSION; DESIGN;
D O I：
10.1364/OE.402137
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Aiming at achieving metamaterials (MTM)-based enhanced transmission through the sub-wavelength aperture on a metallic isolating plate in specific frequency band, the topology optimization method for MTM microstructure design was proposed. The MTM was inserted in the sub-wavelength aperture and perpendicular to the isolating plate. A piecewise preset function was employed to describe the expected enhanced and non-enhanced transmission frequency band. The transmission coefficient of the waveguide system with the designed MTM was mapped to a step mapping function. In the topology optimization of the MTM configuration, matching the mapping function to the preset function was chosen as the design objective. Three designs aiming at different specific enhanced transmission frequency band were carried out. The design satisfied the demand for the specific enhanced transmission frequency band, which was also validated by experiment. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：31572 / 31583
页数：12
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