Tunable spoof surface plasmon polariton transmission line based on ferroelectric thick film

Lou, Jing; Wang, Jiafu; Ma, Hua; Feng, Ming; Li, Zhiqiang; Wang, Jiafu; Qu, Shaobo

doi:10.1007/s00339-019-3035-5

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…[ 3 ] Metamaterials offer unique prospects for the manipulation of incident EM waves and have demonstrated novel phenomena like negative refraction, super lenses, invisibility cloaks, slow light effects, and subwavelength resolution imaging. [ 4–14 ] To date, silicon has emerged as a popular material choice to design THz metamaterials devices in terms of modulators, absorbers, and polarization converters, [ 15–18 ] due to not only its high refractive index and very low absorption losses in the THz frequencies, but also its mature processing technology.…”

Section: Figurementioning

confidence: 99%

Silicon‐Based Terahertz Meta‐Devices for Electrical Modulation of Fano Resonance and Transmission Amplitude

Lou

Liang

et al. 2020

Advanced Optical Materials

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EM waves and have demonstrated novel phenomena like negative refraction, super lenses, invisibility cloaks, slow light effects, and subwavelength resolution imaging. [4-14] To date, silicon has emerged as a popular material choice to design THz metamaterials devices in terms of modulators, absorbers, and polarization converters, [15-18] due to not only its high refractive index and very low absorption losses in the THz frequencies, but also its mature processing technology. The shape and linewidth of an EM resonance depend on the nature and strength of the scattering phenomenon, which are owed to the absence or presence of interference effects occurring in the system. Depending upon the excitation requirements, there are two main kinds of resonances in the planar metamaterials: Lorentz resonance and Fano resonance. The Lorentz resonances exhibit broad and symmetry shape, [19-21] while the Fano resonances show a sharp and asymmetry line shape due to the coherent coupling between the discrete and continuous states. [22-26] Since it was first observed in metamaterials system by breaking the symmetry of the metallic structures, the Fano resonance in metamaterials and plasmonic nanostructures has attracted great Seeking active and effective control over electromagnetic waves has always been an important focus in optics. Fano resonances occur in planar terahertz (THz) metamaterials by introducing a weak asymmetry in a two-gap split ring resonator. Without extra layers of photoactive materials and microelectromechanical structures, a novel and economical scheme based on siliconintegrated THz asymmetric metallic split ring metamaterial is proposed to control Fano resonance and transmission amplitude via electrical excitation. The results show that Fano resonance and transmission amplitude abate drastically with the increase of current bias, due to the loading of electrically formed silicon carrier layer. As the current bias is increased, both the thickness and conductivity of silicon carrier layer are modulated simultaneously. The depth range of modulated silicon carrier layer could reach 250 µm. Besides, a THz transmission amplitude modulator with a modulation depth of 93% is also demonstrated. This work significantly expands the function of silicon-based metamaterials and opens up opportunities for the realization of switchable sensors, filters, and nonlinear devices.

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Section: Figurementioning

confidence: 99%

Silicon‐Based Terahertz Meta‐Devices for Electrical Modulation of Fano Resonance and Transmission Amplitude

Lou

Liang

et al. 2020

Advanced Optical Materials

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“…In other words, manipulation of the optical properties of the platform leads to the variation of the SPPs characteristics. Therefore, many methods, such as temperature controlling [1], applying an external electric field [2], utilizing a pulsed laser [3], and use of active materials like graphene or ferroelectrics [4,5], could be taken to tune the SPPs features properly. Each mentioned mechanism has advantages and disadvantages depending on the interested application.…”

Section: Introductionmentioning

confidence: 99%

Achieving a comparable transverse magneto-optical Kerr effect by spin-orbit field driven magnetoplasmonic

Asteraki,

Farzad

2024

Preprint

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In this study, we propose and simulate a magnetoplasmonics heterostructure that utilizes spin-orbit fields to generate an internal magnetic field and create a significant magneto-optical effect. Our approach offers a new way to overcome the challenges of using permanent magnets or magnetic coils in conventional magnetoplasmonics, such as high-power consumption and non-scalability. We demonstrate that it is possible to create an appropriate amount of magnetic field using spin-orbit fields induced by the spin-Hall effect, such that the consumption power becomes reasonable and the dimensions could be miniaturized. This approach will be an important development in the field of magneto-optics, as it can lead to enhanced transverse magneto-optical Kerr effect in the present of surface plasmon polaritons. The proposed nanostructure consists of a ferromagnetic film adjacent to a heavy metal layer, both sandwiched between two noble metal films, and deposited on a dielectric prism. The strength of the Kerr signal strongly depends on the thickness of the ferromagnetic layer, with the maximum effect observed at a thickness of 5nm. This concept has potential for various nanophotonic and spintronic applications, particularly for developing high-speed active plasmonic devices for ultrafast light modulation.

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Theoretical limit and framework of dynamic modulation in spoof surface plasmon polariton interconnects

Nayem¹,

Imtiaz²,

Joy³

et al. 2023

Opt. Express

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Spoof-surface-plasmon-polariton (SSPP) interconnects are potential candidates for next-generation interconnects to satisfy the growing demand for high-speed, large-volume data transfer in chip-to-chip and inter-chip communication networks. As in any interconnect, the viability and efficiency of the modulation technique employed will play a crucial role in the effective utilization of SSPP interconnects. In light of the lack of a comprehensive platform for the performance analysis of SSPP signal modulation, this work presents a theoretical framework that contributes to the following: 1) predictions of the maximum attainable modulation speed, limited by geometric dispersion in SSPP waveguide, 2) quantification of the fundamental trade-off relation between modulation speed and energy-efficiency for an arbitrary design of SSPP structure, 3) extension of the analysis over a broad category of SSPP modulation technique. In conjunction, a novel SSPP signal modulation technique is introduced, involving controlled alteration of the resonant condition of the SSPP interconnect using a variable resistor. Analyzing a sample SSPP waveguide with a 7 GHz cut-off frequency, the study identifies a potential ∼28% change in its transmission-band by varying the implanted resistor from 5kΩ to 5Ω, a range of values practically attainable with gate-controlled, state-of-the-art submicron scale field-effect transistors. The assertions of the theoretical model have been independently validated by finite-element method based numerical simulations, which show that the underlying concept can be utilized to realize the digital modulation scheme of the amplitude shift keying. For a millimeter-scale SSPP channel having 2.75 GHz transmission bandwidth, up to 300 Mbps modulation speed with nominal power loss is achieved in a standard, thermal-noise limited communication system. By scaling the interconnect to micrometer dimensions, the speed can be augmented up to 10 Gbps for data transfer over 100 mm distance with ≥80% energy efficiency. Essentially, the presented theory is the first of its kind that provides the foundational design guideline for designing and optimizing diverse range of SSPP modulators.

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Tunable spoof surface plasmon polariton transmission line based on ferroelectric thick film

Cited by 3 publications

References 39 publications

Silicon‐Based Terahertz Meta‐Devices for Electrical Modulation of Fano Resonance and Transmission Amplitude

Silicon‐Based Terahertz Meta‐Devices for Electrical Modulation of Fano Resonance and Transmission Amplitude

Achieving a comparable transverse magneto-optical Kerr effect by spin-orbit field driven magnetoplasmonic

Theoretical limit and framework of dynamic modulation in spoof surface plasmon polariton interconnects

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