Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

MOSFET: Enhancement Mode

MOSFET: Enhancement Mode

Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

DSPFusion: Image Fusion via Degradation and Semantic Dual-Prior Guidance.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026

Same author

Rapid slide-level assessment of glomerular yield using virtual staining of unstained renal biopsy sections.

Diagnostic pathology·2026

Same author

An AI framework for automated quality control of paraffin block and slide consistency: a clinical evaluation and human-machine comparison study.

Virchows Archiv : an international journal of pathology·2026

Same author

Taohong Siwu Decoction switches the detrimental/reparative phenotypes of astrocytes via RhoA/ROCK2/Profilin-1 axis to bolster oligodendrogenesis and remyelination after ischemic stroke.

Journal of ethnopharmacology·2026

Same author

Diff-MEF: Cross-Modal Diffusion Framework With Text Prompts and Semantic Perception for Multi-Exposure Image Fusion.

IEEE transactions on image processing : a publication of the IEEE Signal Processing Society·2026

Same author

Human-machine collaboration in reshaping visual perception and cognition.

Innovation (Cambridge (Mass.))·2026

Search research articles

Related Experiment Video

Updated: Apr 20, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Electro-absorption optical modulator using dual-graphene-on-graphene configuration.

Shengwei Ye, Zishuai Wang, Linfeng Tang

|November 18, 2014

Summary

This study presents a novel electro-absorption optical modulator using a dual-graphene-on-graphene design. The device achieves a high extinction ratio and modulation bandwidth with low energy consumption.

More Related Videos

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Related Experiment Videos

Last Updated: Apr 20, 2026

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

Area of Science:

Photonics
Materials Science
Electrical Engineering

Background:

Optical modulators are crucial for high-speed data transmission.
Graphene's unique properties offer potential for advanced optoelectronic devices.
Silicon-on-insulator (SOI) waveguides provide a robust platform for integrated photonics.

Purpose of the Study:

To design and investigate a novel electro-absorption optical modulator utilizing a dual-graphene-on-graphene (GOG) configuration.
To enhance device performance by optimizing graphene layer integration within an SOI waveguide.
To reduce energy consumption and improve modulation efficiency in optical modulators.

Main Methods:

Fabrication of a dual-graphene-on-graphene structure embedded in an SOI waveguide.
Optimization of GOG layer positioning to maximize light-graphene interaction.
Electrical and optical characterization to assess performance metrics.
Co-electrode design to minimize metal-graphene contact resistance.

Main Results:

Achieved a 34 dB extinction ratio (ER).
Demonstrated a 100 GHz modulation bandwidth.
Utilized a compact 5 µm-long active region.
Reported a low energy consumption of 17.6 fJ/bit.
Reduced metal-graphene contact resistance by 50% through co-electrode design.

Conclusions:

The dual-graphene-on-graphene electro-absorption optical modulator shows significant promise for high-performance, energy-efficient optical communication.
Optimized GOG integration leads to strong light-graphene interaction and improved effective mode index modulation.
The proposed device architecture offers a viable path towards next-generation optical interconnects.