An ultra-compact plasmonic Modulator/Switch using VO2 and elasto-optic effect

Chauhan, Diksha; Mola, Genene Tessema; Dwivedi, Ram Prakash

doi:10.1016/j.ijleo.2019.163531

Cited by 21 publications

(5 citation statements)

References 38 publications

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“…The terms of 'surface plasmon' and 'polariton' are respectively involved charge motion in highly conductive matter, and electromagnetic waves in the dielectric or vacuum. The materials which are frequently used in plasmonic structures are typically metals such as silver and gold, which are exploited in various applications such as filters [1][2][3], demultiplexers [4][5][6], sensors [7][8][9], and switches [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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

Asgari

Fabritius

2020

Applied Sciences

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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.

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Section: Introductionmentioning

confidence: 99%

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

Asgari

Fabritius

2020

Applied Sciences

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“…In the near infrared range (especially for telecommunication wavelength of 1550 nm), many electrically activated VO 2 based plasmonic switches have been designed by using waveguides. Chauhan et al [184] presented a plasmonic switch based on metal-dielectric-metal (MDM) waveguide in a directional coupler structure as shown in figure 11(a). The directional coupler structure consisted of two parallel side arms (WG2 and WG3 with VO 2 as dielectric) and one main waveguide (WG1 with active elastooptic material).…”

Section: Electrically Activated Switchesmentioning

confidence: 99%

Plasmonic switches based on VO₂ as the phase change material

Dalal,

Sharma

2024

Nanotechnology

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In this paper, a comprehensive review of the recent advancements in the design and development of plasmonic switches based on vanadium dioxide (VO2) is presented. Plasmonic switches are employed in applications such as integrated photonics, plasmonic logic circuits and computing networks for light routing and switching, and are based on the switching of the plasmonic properties under the effect of an external stimulus. In the last few decades, plasmonic switches have seen a significant growth because of their ultra-fast switching speed, wide spectral tunability, ultra-compact size, and low losses. In this review, first, the mechanism of the semiconductor to metal phase transition in VO2 is discussed and the reasons for employing VO2 over other phase change materials for plasmonic switching are described. Subsequently, an exhaustive review and comparison of the current state-of-the-art plasmonic switches based on VO2 proposed in the last decade is carried out. As the phase transition in VO2 can be activated by application of temperature, voltage or optical light pulses, this review paper has been categorized into thermally-activated, electrically-activated, and optically-activated plasmonic switches based on VO2 operating in the visible, near-infrared, infrared and terahertz frequency regions.

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“…Based on these characteristics, plasmonic nanocircuits and waveguides are considered as potential substitutes for dielectric photonic devices, in particular for matching nanoscale electronic devices for optoelectronic modulation 10 . Related plasmonic optoelectronic components, such as modulators 11 – 14 , filters 15 – 17 , switches 18 – 21 , circuits 8 , 22 – 25 , sensors 26 , have been demonstrated and reported.…”

Section: Introductionmentioning

confidence: 99%

Enhancing on/off ratio of a dielectric-loaded plasmonic logic gate with an amplitude modulator

Chang

Lin

Lee

et al. 2023

Sci Rep

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Plasmonic waveguides allow focusing, guiding, and manipulating light at the nanoscale and promise the miniaturization of functional optical nanocircuits. Dielectric-loaded plasmonic (DLP) waveguides and logic gates have drawn attention because of their relatively low loss, easy fabrication, and good compatibility with gain and active tunable materials. However, the rather low on/off ratio of DLP logic gates remains the main challenge. Here, we introduce an amplitude modulator and theoretically demonstrate an enhanced on/off ratio of a DLP logic gate for XNOR operation. Multimode interference (MMI) in DLP waveguide is precisely calculated for the design of the logic gate. Multiplexing and power splitting at arbitrary multimode numbers have been theoretically analyzed with respect to the size of the amplitude modulator. An enhanced on/off ratio of 11.26 dB has been achieved. The proposed amplitude modulator can also be used to optimize the performance of other logic gates or MMI-based plasmonic functional devices.

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An ultra-compact plasmonic Modulator/Switch using VO2 and elasto-optic effect

Cited by 21 publications

References 38 publications

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

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

Plasmonic switches based on VO₂ as the phase change material

Enhancing on/off ratio of a dielectric-loaded plasmonic logic gate with an amplitude modulator

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An ultra-compact plasmonic Modulator/Switch using VO2 and elasto-optic effect

Cited by 21 publications

References 38 publications

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

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

Plasmonic switches based on VO2 as the phase change material

Enhancing on/off ratio of a dielectric-loaded plasmonic logic gate with an amplitude modulator

Contact Info

Product

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Plasmonic switches based on VO₂ as the phase change material