Asymmetrie coupling between subradiant and superradiant plasmonic resonances and its enhanced sensing performance

Chia Yun Chen, Ieng Wai Un, Nyan Hwa Tai, Ta Jen Yen

研究成果: Article同行評審

171 引文 斯高帕斯(Scopus)

摘要

We present symmetric and asymmetric couplings within a pair of split-ring resonators (SRRs). The former shows a single transmittance dip, following the equivalent circuit model; yet, the latter introduces an additional transmittance peak, stemming from an asymmetrically coupled resonance (ACR) between the subradiant and superradiant modes. 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 ACR is further associated with remarkable confinement of electromagnetic field, providing a compelling sensing performance based on its excellent sensitivity and figure of merit.

原文English
頁(從 - 到)15372-15380
頁數9
期刊Optics Express
17
發行號17
DOIs
出版狀態Published - 2009 八月 17

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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