Two-dimensional graphene-plasmonic crystals for all-optical switch applications

Monfared, Sakineh Almasi; Seifouri, Mahmood; Hamidi, Seyedeh Mehri; Mohseni, Seyed Majid

doi:10.1007/s11082-020-02618-9

Cited by 7 publications

(1 citation statement)

References 41 publications

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“…When light with TM polarization is applied to the metal structure, SPPs are excited (Kik and Brongersma 2007;Maier 2007). Add-drop lters, logic gates, multiplexers, and speci cally switches are various types of plasmonic devices that attracted lots of scientist's attentions (Bashiri andFasihi 2019: Fasihi 2014;Ghadrdan and Mansouri-Birjandi 2013;Mansouri-Birjandi et al 2016;Monfared et al 2020;Negahdari et al 2019). Plasmonic switches are in the range of nanometres with fast response, low input power, and high transmission e ciency.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic switch based on asymmetric cavities with embedding square of gold inside the cavities

2023

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.We proposed an all-optical plasmonic switch based on metal-insulator-metal structures. We used the intrinsic nonlinear properties of gold to implement the switch. The proposed switch consists of a bus waveguide side coupled with a pair of asymmetric vertical cavities. We obtained the transmission spectrum of the structure for low input intensities. The results showed that a sharp dip occurs at the wavelength of 860 nm. Due to the nonlinear properties of gold and the nonlinear Kerr effects, the proposed switch has a high transmission ratio of about 0.8 mW / μm2 and a low threshold power of 0.07 mW / μm2. The threshold power of the structure with and without using the gold nanostructure shows a reduction of 50%. The result showed that the proposed switch has the potential to be applied in the plasmonic integration circuits.

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Section: Introductionmentioning

confidence: 99%

Plasmonic switch based on asymmetric cavities with embedding square of gold inside the cavities

2023

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A low-loss subwavelength plasmonic waveguide for surface plasmon polariton transmission in optical circuits

Maleki,

Soroosh

2023

Opt Quant Electron

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Four-channel photonic crystal demultiplexer with graphene with high quality factor for DWDM applications

da Costa Tavares,

de Sousa,

de Oliveira

et al. 2024

Opt Quant Electron

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This work presents a 4-channel demultiplexer totally based on a two-dimensional photonic crystal (2 DPHC) with silicon rods and defects with the advent of a graphene sheet, in multiplexing systems that use DWDM (Dense Wavelength Division Multiplexing) [1]. In these projects, methods that incorporate plane wave expansion (PWE) and finite difference time domain (FDTD) are used, as they have significant efficiency to generate the photonic hollow modes of the demultiplexer and analyze the global distribution and transmission, respectively. Parameters of transmission overall performance, Q factor, spectral width and channel spacing of the demultiplexer are very important statistics to confirm the general overall performance of the device, whose values are about 100%, 1722.22, 0.9 nm and 10 nm, respectively [2], whose consequences are problem to the validation of the requirements of the DWDM device (ITU.G.694.1) [3]. The proposed demultiplexer includes a bus or linear waveguide with graphene to guide the slight wave and 4 resonant cavities wherein graphene is placed withinside the center to select out the wavelength in a hexagonal lattice form (RCH) of dielectric rods in air. The bus waveguide transmits slight into the resonant hole area and exits thru the respective falling waveguide. The proposed device is nanometer and can be used for the implementation of photonic protected circuits [4].

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Two-dimensional graphene-plasmonic crystals for all-optical switch applications

Cited by 7 publications

References 41 publications

Plasmonic switch based on asymmetric cavities with embedding square of gold inside the cavities

Plasmonic switch based on asymmetric cavities with embedding square of gold inside the cavities

A low-loss subwavelength plasmonic waveguide for surface plasmon polariton transmission in optical circuits

Four-channel photonic crystal demultiplexer with graphene with high quality factor for DWDM applications

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