Double Fano resonance in a side-by-side gratings structure

Brenda Dana*, Alon Bahabad

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


It is shown theoretically and numerically that a metal-dielectric or an all-dielectric side-by-side gratings structure can support non-degenerate guided modes coupled to the same radation mode. This realizes an easy to fabricate, simple system supporting a nearly degenerate, efficiently coupled, double Fano resonance. The ensuing relatively narrow and high-visibility spectral line-shape can be useful for realizing ultra-thin optical filters.

Original languageEnglish
Article number085002
JournalJournal of Optics (United Kingdom)
Issue number8
StatePublished - 16 Jul 2018


  • double Fano resonance
  • optics
  • plasmons


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