Fundamental bounds on extraordinary transmission with experimental validation

Research output: Book/ReportReport


This paper presents a study of extraordinary transmission (EoT) through arrays of sub-wavelength apertures. Fundamental limitations for this phenomenon are formulated as a sum rule, relating the transmission coefficient over a bandwidth to the static polarizability. The sum rule is rigorously derived for arbitrary periodic apertures in thin screens. By this sum rule we establish a physical bound on the bandwidth of EoT which is verified numerically for a number of aperture array designs. We utilize the sum rule to design and optimize sub-wavelength frequency selective surfaces with a bandwidth close to the physically attainable. Finally, we verify the sum rule and simulations by measurements of an array of horseshoe-shaped slots milled in aluminum foil.


External organisations
  • KTH Royal Institute of Technology
  • Linnaeus University
Original languageEnglish
PublisherElectromagnetic Theory Department of Electrical and Information Technology Lund University Sweden
Number of pages19
Publication statusPublished - 2018 Oct 22
Publication categoryResearch

Publication series


Total downloads

No data available

Related projects

Casimir Ehrenborg, Doruk Tayli, Marius Cismasu, Sven Nordebo, Daniel Sjöberg & Mats Gustafsson


Project: Research

View all (1)