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Proceedings Paper

Plasmonic couplings in split-ring resonators by electric excitation
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Paper Abstract

We introduce the symmetric and asymmetric coupling between two geometry-different split-ring resonators (SRRs) with dissimilar resonance frequencies and quality factors. An additional sharp transmission peak is excited as the strong coupling occurs between a narrow subradiant resonance and a broad superradiant resonance by examining the spacing of two SRR constituents. The mechanism of such induced transparency is elucidated well by the suppression of induced currents within the SRR element with a lower quality factor. Finally, the excitation of asymmetrically coupled resonance (ACR) is further associated with remarkable confinement of electromagnetic field on nanoscale, providing a dramatically sensing performance due to its pronounced sensitivity and a characteristic of sharp bandwidth.

Paper Details

Date Published: 1 September 2009
PDF: 8 pages
Proc. SPIE 7392, Metamaterials: Fundamentals and Applications II, 73921H (1 September 2009); doi: 10.1117/12.826689
Show Author Affiliations
Chia-Yun Chen, National Tsing Hua Univ. (Taiwan)
Ta-Jen Yen, National Tsing Hua Univ. (Taiwan)


Published in SPIE Proceedings Vol. 7392:
Metamaterials: Fundamentals and Applications II
Mikhail A. Noginov; Nikolay I. Zheludev; Allan D. Boardman; Nader Engheta, Editor(s)

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