Applications of Tunable Nanoscale Midinfrared Graphene Based Slot Cavity in Nanophotonic Integrated Circuits

Asgari, Somayyeh; Granpayeh, Nosrat

doi:10.1109/tnano.2018.2822277

Cited by 26 publications

(6 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previously published works [4,5,24,26,[39][40][41][42][43][44][45][46][47][48] have reported transmission ratios up to 99% and FWHM values between 2-650 nm. In the design of demultiplexers, it is important to minimize the cross talk, thus the aim of this study was to find a design for demultiplexer which presents a better cross talk comparing to [4,5,26,39,[44][45][46].…”

Section: Introductionmentioning

confidence: 94%

“…Transmission spectra and FWHM are not reported in [44]. FWHMs in [24,26,39,[45][46][47] are not reported and we calculated them approximately. Transmission spectra of [40] contains some ripples and estimation of FWHM is not possible.…”

Section: Two-channel Demultiplexer and Analysismentioning

confidence: 99%

“…In practice, graphene has strong confinement of lightwaves, long propagation length, and low loss making it superior to metals [21][22][23]. Because of the significant advantages of graphene, many graphene based structures-such as filters [24,25], demultiplexers [26,27], modulators [28,29], couplers [30,31], absorbers [32,33], and solar cells [34]-are designed and analyzed. Fabrication of graphene-based devices in MIR region was recently reported in [35,36].…”

Section: Introductionmentioning

confidence: 99%

“…In the design of demultiplexers, it is important to minimize the cross talk, thus the aim of this study was to find a design for demultiplexer which presents a better cross talk comparing to [4,5,26,39,[44][45][46]. Moreover, a demultiplexer design should be conducted so that it maintains a desired single mode resonance in a wider wavelength range than previously reported structures [4,5,24,26,39,40,[42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Tunable Mid-Infrared Graphene Plasmonic Cross-Shaped Resonator for Demultiplexing Application

Asgari

Fabritius

2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

In this study, a tunable graphene plasmonic filter and a two-channel demultiplexer are proposed, simulated, and analyzed in the mid-infrared (MIR) region. We discuss the optical transmission spectra of the proposed cross-shaped resonator and the two-channel demultiplexer. The transmission spectra of the proposed MIR resonator are tunable by change of its dimensional parameters and the Fermi energy of the graphene. Our proposed structures have a single mode in the wavelength range of 5-12 µm. The minimum full width at half maximum (FWHM) and the maximum transmission ratio of the proposed resonator respectively reached 220 nm and 55%. Simulations are performed by use of three-dimensional finite-difference time-domain (3D-FDTD) method. Coupled mode theory (CMT) is used to investigate the structure theoretically. The numerical and the theoretical results are in good agreement. The performance of the proposed two-channel demultiplexer is investigated based on its crosstalk. The minimum value of crosstalk reaches −48.30 dB. Our proposed structures are capable of providing sub-wavelength confinement of light waves, useful in applications in MIR region.

show abstract

Section: Introductionmentioning

confidence: 94%

Section: Two-channel Demultiplexer and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tunable Mid-Infrared Graphene Plasmonic Cross-Shaped Resonator for Demultiplexing Application

Asgari

Fabritius

2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

show abstract

“…Two-dimensional materials, especially graphene, have a great potential for their use in photonics due to high interaction with electromagnetic radiation in THz and infrared bands. Many components for telecommunication systems based on graphene have been suggested recently, such as filters, dividers, sensors, switches, modulators, among others [7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Graphene-based multifunctional three-port THz and long-wave infrared components

2020

View full text Add to dashboard Cite

Two graphene-based T-shaped multifunctional components for THz and Far-Infrared regions are proposed and analyzed. The first component can serve as a divider, a switch and a dynamically controllable filter. This T-junction presents a circular graphene resonator and three graphene waveguides with surface plasmon-polariton waves connected frontally to the resonator. The resonator can be adjusted to work with dipole, quadrupole or hexapole modes. The graphene elements are deposited on a SiO 2 (silica) and Si (silicon) two-layer substrate. The dynamical control and switching of the component is provided by the electrostatic field which defines the graphene Fermi energy. Numerical simulations show that the first component in the division regime (which is also the regime ON) has the transmission coefficient -4.3 dB at the central frequency for every of the two output ports and the FWHM is 9.5%. In the OFF regime, the isolation of the two output ports from the input one is about -30 dB. The second component is a T-junction without resonator which fulfils the function of the divider-switch in more than octave frequency band.

show abstract

Ultra-wideband terahertz graphene absorber using circuit model

Biabanifard

Abrishamian

2018

Appl. Phys. A

View full text Add to dashboard Cite

Applications of Tunable Nanoscale Midinfrared Graphene Based Slot Cavity in Nanophotonic Integrated Circuits

Cited by 26 publications

References 78 publications

Tunable Mid-Infrared Graphene Plasmonic Cross-Shaped Resonator for Demultiplexing Application

Tunable Mid-Infrared Graphene Plasmonic Cross-Shaped Resonator for Demultiplexing Application

Graphene-based multifunctional three-port THz and long-wave infrared components

Ultra-wideband terahertz graphene absorber using circuit model

Contact Info

Product

Resources

About