Transmission enhancement through deep subwavelength apertures using connected split ring resonators

Date
2010
Advisor
Instructor
Source Title
Optics Express
Print ISSN
10944087
Electronic ISSN
Publisher
Optical Society of American (OSA)
Volume
18
Issue
4
Pages
3952 - 3966
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

We report astonishingly high transmission enhancement factors through a subwavelength aperture at microwave frequencies by placing connected split ring resonators in the vicinity of the aperture. We carried out numerical simulations that are consistent with our experimental conclusions. We experimentally show higher than 70,000-fold extraordinary transmission through a deep subwavelength aperture with an electrical size of λ/31xλ/12 (width x length), in terms of the operational wavelength. We discuss the physical origins of the phenomenon. Our numerical results predict that even more improvements of the enhancement factors are attainable. Theoretically, the approach opens up the possibility for achieving very large enhancement factors by overcoming the physical limitations and thereby minimizes the dependence on the aperture geometries. © 2010 Optical Society of America.

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Keywords
Computer simulation, Numerical analysis, Optical resonators, Enhancement factor, Extraordinary transmission, High transmission, Numerical results, Numerical simulation, Physical limitations, Split ring resonator, Subwavelength apertures, Transmission enhancement, Wave transmission, article, equipment, equipment design, instrumentation, light, microwave radiation, optical instrumentation, radiation scattering, refractometry, transducer, Equipment Design, Equipment Failure Analysis, Light, Microwaves, Optical Devices, Refractometry, Scattering, Radiation, Transducers
Citation
Published Version (Please cite this version)