Enhanced transmission in microwave arrays of periodic sub-wavelength apertures

Schuchinsky, Alexander; Zelenchuk, Dmitry; Лерер, А. М.

doi:10.1088/1464-4258/7/2/014

Cited by 19 publications

(12 citation statements)

References 9 publications

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“…The basic feature of the sensors is measuring the refractive index variation in biological and chemical real-time highdefinition sensing. It is important to mention that ELT phenomena are studied in the microwave (THz) region of electromagnetic waves 49,54,55 which attracts a great deal of attention.…”

Section: Introductionmentioning

confidence: 99%

Excitation of surface plasmon-polaritons in metal films with double periodic modulation: Anomalous optical effects

2007

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We perform a thorough theoretical analysis of resonance effects when an arbitrarily polarized plane monochromatic wave is incident onto a double periodically modulated metal film sandwiched by two different transparent media. The proposed theory offers a generalization of the theory that had been build in our recent papers for the simplest case of one-dimensional structures to two-dimensional ones. A special emphasis is placed on the films with the modulation caused by cylindrical inclusions, hence, the results obtained are applicable to the films used in the experiments. We discuss a spectral composition of modulated films and highlight the principal role of "resonance" and "coupling" modulation harmonics. All the originating multiple resonances are examined in detail. The transformation coefficients corresponding to different diffraction orders are investigated in the vicinity of each resonance. We make a comparison between our theory and recent experiments concerning enhanced light transmittance (ELT) and show the ways of increasing the efficiency of these phenomena. In the appendix we demonstrate a close analogy between ELT effect and peculiarities of a forced motion of two coupled classical oscillators.

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Section: Introductionmentioning

confidence: 99%

Excitation of surface plasmon-polaritons in metal films with double periodic modulation: Anomalous optical effects

2007

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“…Planar arrays of closed loops and other elements have a long history of use as frequency selective surfaces (diffraction gratings) for application in reflector antennas [36,37]. For such arrays, it is appropriate to use a full-wave numerical method for calculating induced currents (magnitude and spatial distribution), in order to account rigorously for mutual coupling (EM interaction) between the elements [20].…”

Section: Reflection and Transmission For Gratings Of Planar Chiral Spmentioning

confidence: 99%

Planar chirality of plasmonic multi-split rings

Arnaut¹

2009

J. Opt. A: Pure Appl. Opt.

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Abstract. We develop an analytical framework for the analysis of planar chiral multi-split rings, based on a Fourier series expansion of the induced current. The number, width, and location of each split (gap) is arbitrary. Provision is made for the possibility of inserting lumped active or passive impedance loads in the gaps. The model demonstrates the hallmark of planar chirality and its consequent magneto-electric coupling as a function of the parameters of the splits and impedance loads. It is demonstrated that impedance loads sequenced in a clockwise or anti-clockwise fashion allow for generation of dissymetric current distributions in the plane, like for geometric (structural) chirality.We also determine the effect of planar chirality on the relevant dyadic polarizability components of a split ring.Reflection and transmission coefficient characteristics of regular arrays of such rings are determined with the aid of the periodic method of moments. Phase-coherent detection of the sense of handedness and incoherent detection of planar chirality per se by measurement of the field intensity are shown to be possible, in both the reflection and transmission characteristics. These results are relevant to both coherent and incoherent detection at optical and suboptical wavelengths.

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“…Using the 3D FDTD method, [43] studied optical transmission properties of subwavelength hole-arrays, with particular focus on the effects which the permittivity of the dielectric filling the holes have on the transmission. Sophisticated implementations of methods for treating periodic structures in the same context have been reported in [44][45][46]. Besides theoretical studies, experimental works on this topic of extraordinary transmission have also been performed in numerous papers such as those of [11,32,[47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Extraordinary Transmission Through Subwavelength Hole Arrays for General Oblique Incidence - Mechanism as Related to Surface Wave Dispersion and Floquet Lattice Diagrams

Kehn¹

2018

PIER B

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An array of rectangular holes pierced through a conducting screen is treated herein by a rigorous full-wave modal analysis using the moment method entailing Green's functions for rectangular cavities and planar multilayer structures in the spectral domain. Unexpectedly strong diffusions of incident plane waves are observed even at frequencies where the size of each hole is considerably less than the wavelength, posing a transmission efficiency that exceeds unity and thus leading to extraordinary transmission since this defies classical aperture diffraction theory. This paper fortifies the present understanding of the role surface plasmon polaritons (SPP) play in explaining this phenomenon, by using surface-wave dispersion and Floquet lattice diagrams to link up with the peaks in the transmission spectra. The incidence angle and polarization of the irradiation are taken into account in this work.

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Enhanced transmission in microwave arrays of periodic sub-wavelength apertures

Cited by 19 publications

References 9 publications

Excitation of surface plasmon-polaritons in metal films with double periodic modulation: Anomalous optical effects

Excitation of surface plasmon-polaritons in metal films with double periodic modulation: Anomalous optical effects

Planar chirality of plasmonic multi-split rings

Extraordinary Transmission Through Subwavelength Hole Arrays for General Oblique Incidence - Mechanism as Related to Surface Wave Dispersion and Floquet Lattice Diagrams

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