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

Computational origins of cortical brain circuits for social cognition.

Nature reviews. Neuroscience·2026

Same author

Activity in human dorsal raphe nucleus signals changes in behavioural policy.

Nature communications·2026

Same author

Full picture of the chemical composition of potential fluids leaking from geological CO<sub>2</sub> storage reservoirs to shallow environments; a review.

Journal of environmental management·2026

Same author

Molecular evidence of <i>Enterocytozoon bieneusi</i> in arid urban landscapes of shiraz cockroaches (Blattodea), Southwest Iran: Implications for urban public health surveillance.

Parasite epidemiology and control·2025

Same author

All-optical convolutional neural network based on phase change materials in silicon photonics platform.

Scientific reports·2025

Same author

Dorsal raphe nucleus controls motivation-state transitions in monkeys.

Science advances·2025

Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026

Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026

Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026

Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026

Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026

Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jul 31, 2025

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

GeSbSeTe-based high extinction ratio optical modulator.

Ali Mahmoodi, Mehdi Miri, Mohammad Hossein Sheikhi

|May 3, 2023

Summary

This summary is machine-generated.

This study introduces a novel Mach-Zehnder optical modulator using germanium-antimony-selenium-tellurium (GSST) for high extinction ratio amplitude modulation. Simulations demonstrate excellent performance with low insertion loss across a wide wavelength range.

More Related Videos

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Related Experiment Videos

Last Updated: Jul 31, 2025

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

Area of Science:

Photonics and Optical Engineering
Materials Science
Semiconductor Devices

Background:

Mach-Zehnder interferometers (MZIs) are crucial for optical modulation.
Achieving high extinction ratios and low insertion loss is a key challenge.
Phase change materials offer tunable optical properties.

Purpose of the Study:

To propose a novel Mach-Zehnder optical modulator design.
To utilize the switchable refractive index of germanium-antimony-selenium-tellurium (GSST) for amplitude modulation.
To enhance modulator performance with an asymmetric input splitter.

Main Methods:

Design and simulation of a Mach-Zehnder optical modulator.
Employing three-dimensional finite-difference-time-domain (FDTD) simulations.
Utilizing finite-element method (FEM) for thermal excitation simulation.

Main Results:

Achieved a high extinction ratio (ER) of 45 dB and low insertion loss (IL) of 2 dB at 1550 nm.
Maintained ER above 22 dB and IL below 3.5 dB across the 1500-1600 nm wavelength range.
Estimated modulator speed and energy consumption based on thermal simulations.

Conclusions:

The proposed GSST-based MZI modulator offers superior extinction ratio and low insertion loss.
The novel asymmetric splitter design effectively compensates for amplitude differences.
The modulator shows promise for high-performance optical communication applications.