Polarization Insensitivity in Double-Split Ring and Triple-Split Ring Terahertz Resonators

A modified double-split ring resonator and a modified triple-split ring resonator, which offer polarization-insensitive performance, are investigated, designed and fabricated. By displacing the two gaps of the conventional double- split ring resonator away from the center, the second resonant freque...

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Bibliographic Details
Published in:Chinese physics letters 2015-10, Vol.32 (10), p.123-126
Main Author: 吴倩男 兰峰 唐效频 杨梓强
Format: Article
Language:English
Subjects:
Devices
Dipping
Displacement
Polarization
Resonant frequencies
Resonators
偏振不敏感
分裂环
太赫兹
开口谐振环
环和
谐振器
谐振腔
谐振频率
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Summary:A modified double-split ring resonator and a modified triple-split ring resonator, which offer polarization-insensitive performance, are investigated, designed and fabricated. By displacing the two gaps of the conventional double- split ring resonator away from the center, the second resonant frequency for the 0° polarized wave and the resonant frequency for the 90° polarized wave become increasingly close to each other until they are finally identical. Theoretical and experimental results show that the modified double-split ring resonator and the modified triple-split ring resonator are insensitive to different polarized waves and show strong resonant frequency dips near 433 and 444OHz, respectively. The results of this work suggest new opportunities for the investigation and design of polarization-dependent terahertz devices based on split ring resonators.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/10/107801