Plasmonic couplings in split-ring resonators by electric excitation

Chia-Yun Chen, Ta Jen Yen

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationMetamaterials
Subtitle of host publicationFundamentals and Applications II
Publication statusPublished - 2009 Nov 2
EventMetamaterials: Fundamentals and Applications II - San Diego, CA, United States
Duration: 2009 Aug 22009 Aug 5

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherMetamaterials: Fundamentals and Applications II
CountryUnited States
CitySan Diego, CA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Chen, C-Y., & Yen, T. J. (2009). Plasmonic couplings in split-ring resonators by electric excitation. In Metamaterials: Fundamentals and Applications II [73921H] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7392).