Plasmonic reflectors and high-Q nano-cavities based on coupled metal-insulator-metal waveguides

Chen, Jing; Yang, Jian; Chen, Zhuo; Fang, Yijiao; Zhan, Peng; Wang, Zhenlin

doi:10.1063/1.3688767

Cited by 10 publications

(6 citation statements)

References 40 publications

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“…Under specific conditions, < ε 2 > can reveal a gain behavior of the system reaching very high absolute values (500) for the MIMI system with ZnO as insulator. Due to their plasmonic behavior, the fabricated nano-cavities present a macroscopic optical effect characterized by different colors when incident light and viewing angles are tuned [43][44][45][46][47] . Finally, behavior of ∆ and Ψ evidence the presence of a spontaneous Goos-Hänchen shift effect [48][49][50] .…”

Section: Introductionmentioning

confidence: 99%

Color Tuning by Spontaneous Propagation of Gap Surface Plasmons in Epsilon Near Zero Nano-Cavity

Lio,

Ferraro,

Giocondo

et al. 2020

Preprint

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This work presents numerical and experimental results of plasmonic Metal-Insulator optical nanocavities. The systems are composed of Silver as metal, polyvinylpyrrolidone or indium tin oxide or zinc oxide as insulator. The proposed nano-cavities exhibit extraordinary effects as colors changing in function of the incident/view angles, enhancement of the experimental real and imaginary parts of the pseudo dielectric constant, an extraordinary transmission of 50% and zero reflection for both polarizations at the resonant wavelengths. These results lead to the formation and propagation of surface plasmon polaritons and their hybridization in gap surface plasmons. The concurrence of these effects allow studying the Goos-Hänchen shift by exploiting the very narrow ∆ and Ψ ellipsometer parameters. Thank to their optical properties, the proposed nano-cavities could be applied in several fields such tunable color filters, optics, photonics and sensing.

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Section: Introductionmentioning

confidence: 99%

Color Tuning by Spontaneous Propagation of Gap Surface Plasmons in Epsilon Near Zero Nano-Cavity

Lio,

Ferraro,

Giocondo

et al. 2020

Preprint

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“…[1] Among a variety of plasmonic waveguides, the metal-insulatormetal (MIM) waveguide is attractive for highly-integrated on-chip plasmonic circuits because of its extremely strong field confinement. [2][3][4] To date, a variety of plasmonic devices based on the MIM waveguide platform have been proposed or demonstrated, such as detectors, [5] reflectors, [6,7] electro-optic switches, [8] nonlinear devices, [9] filters, resonators, [10,11] and sensors. [12,13] Among these MIM waveguide-based devices, plasmonic Bragg reflectors have attracted increasing attention in the last decade.…”

Section: Introductionmentioning

confidence: 99%

Unidirectional plasmonic Bragg reflector based on longitudinally asymmetric nanostructures*

Chen¹,

Pan

Lu³

et al. 2019

Chinese Phys. B

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Plasmonic Bragg reflectors are essential components in plasmonic circuits. Here we propose a novel type of plasmonic Bragg reflector, which has very high reflectance for the right-side incidence and meanwhile has extremely large absorption for the left-side incidence. This device is composed of longitudinally asymmetric nanostructures in a metal–insulator–metal waveguide. In order to efficiently analyze, design, and optimize the reflection and transmission characteristics of the proposed device, we develop a semi-analytic coupled-mode model. Results show that the reflectance extinction ratio between plasmonic modes incident from the right-side and the left-side reaches 11 dB. We expect this device with such striking unidirectional reflection performance can be used as insulators in nanoplasmonic circuits.

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“…In the past decade, the surface plasmon resonances of noble metal nanostructures have attracted considerable research interest due to their unusual abilities to manipulate light within subwavelength dimensions and to produce extremely strong local electromagnetic fields near the metal surfaces [ 1 , 2 , 3 ]. As we know, the plasmonic structures described by quasi-lorentzian profiles usually exhibit a symmetric and wide lineshape in transmission spectra [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Tunable Nanosensor Based on Fano Resonances Created by Changing the Deviation Angle of the Metal Core in a Plasmonic Cavity

Wang

Ouyang

Sun

et al. 2018

Sensors

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In this paper, a type of tunable plasmonic refractive index nanosensor based on Fano resonance is proposed and investigated. The sensor comprises a metal-insulator-metal (MIM) nanocavity with a center-deviated metal core and two side-coupled waveguides. By carefully adjusting the deviation angle and distance of the metal core in the cavity, Fano resonances can be obtained and modulated. The Fano resonances can be considered as results induced by the symmetry-breaking or geometric effect that affects the field distribution intensity at the coupling region between the right waveguide and the cavity. Such a field-distribution pattern change can be regarded as being caused by the interference between the waveguide modes and the cavity modes. The investigations demonstrate that the spectral positions and modulation depths of Fano resonances are highly sensitive to the deviation parameters. Furthermore, the figure of merit (FOM) value is calculated for different deviation angle. The result shows that this kind of tunable sensor has compact structure, high transmission, sharp Fano lineshape, and high sensitivity to the change in background refractive index. This work provides an effective method for flexibly tuning Fano resonance, which has wide applications in designing on-chip plasmonic nanosensors or other relevant devices, such as information modulators, optical filters, and ultra-fast switches.

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Plasmonic reflectors and high-Q nano-cavities based on coupled metal-insulator-metal waveguides

Cited by 10 publications

References 40 publications

Color Tuning by Spontaneous Propagation of Gap Surface Plasmons in Epsilon Near Zero Nano-Cavity

Color Tuning by Spontaneous Propagation of Gap Surface Plasmons in Epsilon Near Zero Nano-Cavity

Unidirectional plasmonic Bragg reflector based on longitudinally asymmetric nanostructures*

Tunable Nanosensor Based on Fano Resonances Created by Changing the Deviation Angle of the Metal Core in a Plasmonic Cavity

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