Plasmonic couplings in split-ring resonators by electric excitation

Chia-Yun Chen; Ta-Jen Yen

doi:10.1117/12.826689

1 September 2009 Plasmonic couplings in split-ring resonators by electric excitation

Chia-Yun Chen, Ta-Jen Yen

Proceedings Volume 7392, Metamaterials: Fundamentals and Applications II; 73921H (2009) https://doi.org/10.1117/12.826689
Event: SPIE NanoScience + Engineering, 2009, San Diego, California, United States

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.

Citation Download Citation

Chia-Yun Chen and Ta-Jen Yen "Plasmonic couplings in split-ring resonators by electric excitation", Proc. SPIE 7392, Metamaterials: Fundamentals and Applications II, 73921H (1 September 2009); https://doi.org/10.1117/12.826689

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