Broadband Silver Ribbon-Embedded Graphene and h-BN Optical Modulator With High Modulation Depth and Extinction Ratio and Low Switching Voltage

Broadband Silver Ribbon-Embedded Graphene and h-BN Optical Modulator With High Modulation Depth and Extinction Ratio and Low Switching Voltage

Herein, we theoretically demonstrate a broadband hybrid plasmonic electro-absorption optical modulator with integrated silver nanoribbons. We have examined two structures. The first one includes two layers of graphene and two layers of hexagonal boron nitride (h-BN). Silver nanoribbons are placed on...

Full description

Saved in:
Bibliographic Details
Main Authors: Hossein Karimkhani, Hamid Vahed
Format: Article
Language:English
Published: IEEE 2024-01-01
Series:IEEE Photonics Journal
Subjects:
Optical modulators
graphene
Molybdenum Disulfide
2D materials
electro absorption
Online Access:https://ieeexplore.ieee.org/document/10373044/
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Herein, we theoretically demonstrate a broadband hybrid plasmonic electro-absorption optical modulator with integrated silver nanoribbons. We have examined two structures. The first one includes two layers of graphene and two layers of hexagonal boron nitride (h-BN). Silver nanoribbons are placed on the Molybdenum Disulfide (<inline-formula><tex-math notation="LaTeX">$Mo{S}_2$</tex-math></inline-formula>) layer. In the second structure, we covered the nanoribbon arrays with extra graphene, <inline-formula><tex-math notation="LaTeX">$Mo{S}_2$</tex-math></inline-formula>, and h-BN layers. The effect of the gap between the silver nanoribbons is analyzed for the effective refractive index, modulation depth (MD), Extinction Ratio (ER), Figure of Merit (FoM), and loss. The best results illustrate that the highest amount of the effective refractive index is 5.65, and the highest amount of the loss is 2.2 dB&#x002F;&#x03BC;m in the chemical potential of 0.65 eV at the wavelength of 1.3 &#x03BC;m. The maximum MD and FoM are 28.37 dB&#x002F;&#x03BC;m and 62.93 at 1.3 &#x03BC;m, respectively. The calculations show that this electro-absorption modulator has a modulation bandwidth of 411.25 GHz and 27.18 fJ&#x002F;bit energy consumption. This modulator achieves a high MD, ER, and FoM with a small footprint and low switching voltage. The study demonstrates that the modulator can achieve a high level of modulation depth with low energy consumption and loss.
ISSN:1943-0655

Similar Items