Analogue of electromagnetically induced transparency with modulatable transmission

Author

Xian Qi Lin ; Jia Wei Yu ; Zhe Chen ; Peng Cheng Zhang ; Peng Fei Li

Author_Institution

Sch. of Electron. Eng., EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

51

Issue

15

fYear

2015

fDate

7 23 2015

Firstpage

1132

Lastpage

1134

Abstract

A modulatable electromagnetically induced transparency (EIT) is achieved using a slotted circle ring structure. The circle ring structure is used to induce a polarisation-independence resonance with a low Q factor, while the slot is etched to obtain a polarisation-dependence resonance with a high Q factor. The EIT effect is obtained when the two resonances have nearby resonant frequencies but with different Q factors. As both resonant modes are excited by the external field independently, different coupling strength is achieved simply by adjusting the polarisation angle. Then the transmission of EIT is successfully modulated. The design concept is well validated both by simulation and measurement.

Keywords

Q-factor; electromagnetic wave polarisation; electromagnetic wave transmission; self-induced transparency; EIT modulatable transmission; Q factor; electromagnetically induced transparency; polarisation angle adjustment; polarisation-independence resonance; slotted circle ring structure;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2015.0151

Filename

7163382