Integrated spoof plasmonic circuits

Zhang, Jingjing; Zhang, Haochi; Gao, Xinxin; Zhang, Lepeng; Niu, Lingyun; He, Pei-Hang; Cui, Tiejun

doi:10.1016/j.scib.2019.01.022

Cited by 43 publications

(25 citation statements)

References 93 publications

(135 reference statements)

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“…Since the prediction of Pendry et al, 81 we have witnessed the development of SSPPs from the original metamaterial concept to practical applications. 124,169,170 However, due to previous technical limitations, most of the related works were carried out at microwave frequencies. With recent advances in THz science and technology, various intriguing concepts [171][172][173] could now be extended to and further explored at THz frequencies, filling the gap of high-performance THz plasmonic components.…”

Section: Discussionmentioning

confidence: 99%

Terahertz surface plasmonic waves: a review

et al. 2020

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Terahertz science and technology promise many cutting-edge applications. Terahertz surface plasmonic waves that propagate at metal-dielectric interfaces deliver a potentially effective way to realize integrated terahertz devices and systems. Previous concerns regarding terahertz surface plasmonic waves have been based on their highly delocalized feature. However, recent advances in plasmonics indicate that the confinement of terahertz surface plasmonic waves, as well as their propagating behaviors, can be engineered by designing the surface environments, shapes, structures, materials, etc., enabling a unique and fascinating regime of plasmonic waves. Together with the essential spectral property of terahertz radiation, as well as the increasingly developed materials, microfabrication, and time-domain spectroscopy technologies, devices and systems based on terahertz surface plasmonic waves may pave the way toward highly integrated platforms for multifunctional operation, implementation, and processing of terahertz waves in both fundamental science and practical applications. We present a review on terahertz surface plasmonic waves on various types of supports in a sequence of properties, excitation and detection, and applications. The current research trend and outlook of possible research directions for terahertz surface plasmonic waves are also outlined.

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Section: Discussionmentioning

confidence: 99%

Terahertz surface plasmonic waves: a review

et al. 2020

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“…[ 16 , 17 , 18 ] These findings reveal the potential of SSPP interconnect as a promising solution for data transfer, and pave the way for SSPP applications in the next‐generation communication systems. [ 19 , 20 ]…”

Section: Introductionmentioning

confidence: 99%

“…[16][17][18] These findings reveal the potential of SSPP interconnect as a promising solution for data transfer, and pave the way for SSPP applications in the next-generation communication systems. [19,20] In communication systems, the transmitting information signal may suffer from large path losses for medium-and longdistance communications. To reduce the path loss, a power amplifier is a critical component that boosts the power level of the signal to be transmitted up to the required value.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Parametric Amplifications of Spoof Surface Plasmons

et al. 2021

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Next-generation inter-chip communication requires ultrafast ultra-compact interconnects. Designer plasmonics offers a possible route towards this goal. Further development of the plasmonic technique to circuit applications requires the direct amplification of plasmonic signals on a compact platform. However, significant signal distortions and limited operational speeds prevent the application of traditional MOS-based amplifiers to plasmonics. Up to day, the amplification of surface plasmons without phase distortion has remained a scientific challenge. In this work, the concept of parametric amplification (PA) is transplanted to the plasmonics and is realized experimentally an ultrathin reconfigurable PA using a spoof surface plasmon polariton (SSPP) waveguide integrated with tunable and nonlinear varactors. The measured parametric gain in the experiment can reach up to 9.14 dB within a short nonlinear propagation length, for example, six SSPP wavelengths, in excellent agreement with the theoretical prediction. By tuning the bias voltage of varactors, the phase-matching condition can be precisely controlled over a broad frequency band, enabling the authors to realize the multi-frequency PA of plasmonic signals. Measured phase responses confirm that the plasmonic parametric amplifier can significantly suppress the signal distortions as compared with the traditional MOS-based amplifier, which is a property highly desired for ultrafast wireless communication systems and integrated circuits.

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“…Spoof surface plasmon polaritons (SSPPs) have been proposed as a promising solution to the increasingly challenging miniaturization problems in integrated circuits. [1] As an analogue to the surface plasmon polaritons (SPPs) in the optical spectrum, SSPPs inherit the effective medium concept of metamaterials and mimic the dispersion properties of SPPs because the surface of the metal is patterned with arrays of subwavelength holes or grooves. [2,3] This approach reduces the effective surface plasmon frequency of metal structures (from microwave to farinfrared) and strengthens the binding of electromagnetic (EM) waves to the metal surface.…”

Section: Introductionmentioning

confidence: 99%

Spoof Localized Surface Plasmon Enhanced Isolation and Circulation

Zhang

Wang

et al. 2022

Adv Materials Technologies

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crosstalk between parallel transmission channels and increase the signal integrity in circuits with dense wiring. [5] Moreover, the dispersion properties of SSPPs can be engineered by tuning the structures of the surface patterning or the bias voltages/currents of the integrated varactor diodes/positive-intrinsic-negative (PIN) diodes, providing flexibility in the design of devices with multiple functionalities or working frequency bands. [6][7][8][9] The metamaterial approach can also be used to design localized surface plasmons (LSPs) at low frequencies by making corrugations on closed metal surfaces. Spoof LSPs(SLSP) resonators with straight or spiral corrugations have been demonstrated to support multiple resonance modes [10,11] and applied in the design of sensors, [12,13] filters, [14,15] etc. Compared with straight corrugation structures, because the spiral structure accommodates longer corrugations within the same area, the resonance frequency is reduced, giving rise to devices with deep-subwavelength sizes. [16] The isolator and circulator are fundamental EM devices that allow nonreciprocal signal routing in photonic and microwave circuits and are widely used in radar, communication, and detection systems. Because the isolator/circulator permits the transmission of EM waves in only one direction, the transfer function can be modified as desired, and the detrimental feedback between different components in the circuit due to unwanted reflections is suppressed. Various mechanisms have been leveraged to achieve such nonreciprocal propagation, including magneto-optical effects, [17][18][19] nonlinearity, [20,21] time modulation, [22][23][24][25][26] near-zero-index metamaterials, [27] topologically protected edge states in photonic crystals, [28] and mode coupling between photonic crystal and resonant system. [29] Among these, the magneto-optical effect is the most commonly adopted, where the symmetry of the electric permittivity tensor is broken by applying an external magnetic field to a ferromagnetic medium. Recently, this mechanism has also been used for designing SSPP isolators and circulators. [30,31] However, these SSPP isolators and circulators are composed of multiple layers of dielectric substrates, SSPP waveguides, and bulky ferrite slabs. Furthermore, the proposed devices usually have only a single operating band.Herein, we report experimental demonstrations of an isolator and a circulator for SSPPs, which are based on the interaction between magneto-SLSP resonator(s) and SSPP waveguide(s). The deep-subwavelength spiral-shaped SLSP resonator coated with the magneto-optical material under a static magnetic field allows surface waves to circulate in A miniaturized spoof plasmonic isolator comprising a deep-subwavelength spoof localized surface plasmon (SLSP) resonator coupled with an ultrathin spoof surface plasmon polariton waveguide is proposed and experimentally demonstrated. The SLSP resonator coated with a magneto-optical material can enhance the isolation property, allowing for multifrequency...

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Integrated spoof plasmonic circuits

Cited by 43 publications

References 93 publications

Terahertz surface plasmonic waves: a review

Terahertz surface plasmonic waves: a review

Reconfigurable Parametric Amplifications of Spoof Surface Plasmons

Spoof Localized Surface Plasmon Enhanced Isolation and Circulation

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