A new kind of spoof surface plasmon polaritons structure with periodic loading of T-shape grooves

Chen, Chongchong

doi:10.1063/1.4964619

Cited by 13 publications

(7 citation statements)

References 22 publications

(18 reference statements)

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“…Surface plasmon resonance [1] in patterned metals has triggered a number of exciting applications [2][3][4][5][6][7][8][9], due to its ability to push the conventional boundary of resolution beyond the Abbe diffraction limit [10]. However, surface plasmon has also got its own limitations as well.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the argument of conservation of field polarization, it was hypothesized that [15], even in thin structures, the main characteristics of SSPP metamaterial with infinite thickness are retained, and hence the standard theory for spoof plasmon [9,[21][22][23][24], originally derived for 3D structure, requires no revision. Because of the apparent resemblance between the dispersion behaviour of a 3D SSPP structure and that of its 2D planar counterpart, it was deemed redundant to perform an exclusive analysis of the planar SSPP structure.…”

Section: Introductionmentioning

confidence: 99%

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Properties of spoof plasmon in thin structures

Joy

Mazumder

2018

Proc. R. Soc. A.

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Spoof surface plasmon polariton (SSPP) is an exotic electromagnetic state that confines light at a subwavelength scale at a design-specific frequency. It has been known for a while that spoof plasmon mode can exist in planar, thin structures with dispersion properties similar to that of its wide threedimensional structure counterpart. We, however, have shown that spoof plasmons in thin structures possess some unique properties that remain unexplored. Our analysis reveals that the field interior to SSPP waveguide can achieve an exceptional hyperbolic spatial dependence, which can explain why spoof plasma resonance incurs red-shift with the reduction of the waveguide thickness, whereas common wisdom suggests frequency blue-shift of a resonant structure with its size reduction. In addition, we show that strong confinement can be achieved over a wide band in thin spoof plasmon structure, ranging from the spoof plasma frequency up to a lower frequency considerably away from the resonant point. The nature of lateral confinement in thin SSPP structures may enable interesting applications involving fast modulation rate due to enhanced sensitivity of optical modes without compromising modal confinement.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Properties of spoof plasmon in thin structures

Joy

Mazumder

2018

Proc. R. Soc. A.

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“…Recently, some studies have demonstrated the higher propagation confinement and low-loss features associated with T-shaped grooves when compared to rectangular, V, dumbbell and trapezoidal grooves etched on conventional SPP TLs [32,33]. In this paper, we exploit these unique features associated with T-shaped grooves when forming a band-rejection filter for the first time when we consider their interaction with SSPP TLs.…”

Section: Introductionmentioning

confidence: 99%

A novel and ultra-compact plasmonic filter with a fully controlled rejection band

Aziz¹,

Aziz²

2023

Laser Phys.

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In this article, we propose a novel approach to develop an ultra-compact spoof surface plasmon polariton (SSPP) band-rejection filter by loading T-shaped grooves on the SSPP transmission line (TL). This scheme is based on the interaction between two types of grooves, i.e. rectangular grooves of the SSPP TL and T-shaped grooves. This form of interaction has never been addressed before in order to achieve a highly efficient SSPP band-rejection filter. The working principle of this band-rejection filter is clearly revealed via investigation of the dispersion behavior of the SSPP TL in the presence and absence of T-shaped groove loading. Meanwhile, we simulate an SSPP TL loaded with T-shaped grooves. As proof of concept, we fabricate the filter in the microwave regime and perform an experiment which characterizes its functionality. The simulated and experimental results confirm the excellent filtering phenomena exhibited by our structure. The isolation of the filter can be less than −15 dB at rejection frequencies with excellent transmission efficiency in both passbands, before and after the rejection band. Furthermore, simulated near-electric-field results are also presented to demonstrate the authenticity of the filter. When the question of generating a highly efficient SSPP band-rejection filter arises, the proposed method facilitates us with T-shaped grooves, which are declared as an excellent alternative to metamaterial particles in this regard. The proposed band-rejection filter based on SSPPs demonstrates an outstanding capability to take part in the progress and the advancement of integrated plasmonic structures and systems at microwave frequencies.

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“…Based on the mechanism of SSPPs, a microwave bandpass filter (BPF) is realized in [14] by employing a periodic subwavelength metallic Domino array. A new kind of SSPP structure with periodic loading of T‐shape grooves is introduced in [15]. A comb‐shaped SSPP structure loaded with two H‐shaped cells in the centre forms a non‐periodic SSPP [16], and a highly selective wideband bandpass filter (BPF) is realized by using spiral‐shaped defected ground structure on coplanar waveguide (CPW).…”

Section: Introductionmentioning

confidence: 99%

Hybrid spoof surface plasmon polariton and substrate integrated waveguide bandpass filter with high out‐of‐band rejection for X‐band applications

Sangam

Kshetrimayum

2021

IET Microwaves Antenna & Prop

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Two bandpass filters based on hybrid spoof surface plasmon polariton (SSPP) and substrate integrated waveguide (SIW) are presented for X-band applications, herein. The dispersion and transmission characteristics of the proposed hybrid SSPP-SIW structures are analysed, and the influence on the variation of their structural parameters is investigated. The proposed dumbbell-shaped SSPP shows more slow-wave effects than the rectangle-shaped SSPP for the same height of grooves, and hence could be a good choice in the design of compact, low loss and highly integrated microwave and terahertz devices. The lower and upper cutoff frequencies of hybrid SSPP-SIW bandpass filters can be adjusted independently by varying the structural parameters of SIW and SSPP units, respectively. The proposed two filters exhibit excellent passband (8-13.15 GHz for filter I and 8-13.5 GHz for filter II) and wide upper-band rejection (>42.5 dB from 14.1 to 20 GHz for filter I and >41 dB from 14.2 to 19.5 GHz for filter II) simultaneously. Their size is very compact, amounts to only about 1λ g � 0.7λ g , where λ g is the guided wavelength in the SIW at the centre frequency. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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A new kind of spoof surface plasmon polaritons structure with periodic loading of T-shape grooves

Cited by 13 publications

References 22 publications

Properties of spoof plasmon in thin structures

Properties of spoof plasmon in thin structures

A novel and ultra-compact plasmonic filter with a fully controlled rejection band

Hybrid spoof surface plasmon polariton and substrate integrated waveguide bandpass filter with high out‐of‐band rejection for X‐band applications

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