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

Muscle Contraction

Muscle Contraction

Muscle Contraction

Muscle Contraction

In skeletal muscles, acetylcholine is released by nerve terminals at the motor endplate—the point of synaptic communication between motor neurons and muscle fibers. The binding of acetylcholine to its receptors on the sarcolemma allows entry of sodium ions into the cell and triggers an action potential in the muscle cell. Thus, electrical signals from the brain are transmitted to the muscle. Subsequently, the enzyme acetylcholinesterase breaks down acetylcholine to prevent excessive...

Problem-Solving: Tuning of a Guitar String

Problem-Solving: Tuning of a Guitar String

In the case of stringed instruments like the guitar, the elastic property that determines the speed of the sound produced is its linear mass density or the mass per unit length. This is simply called the linear density. If the string's linear density is constant along the string, then the linear density is simply the total mass divided by the total length.
The string's wave speed can be regulated by varying the linear density. Tension is the other property that determines the speed of...

Smooth Muscle Contraction

Smooth Muscle Contraction

Smooth muscle contraction is a complex process vital for various bodily functions, from maintaining blood vessel tension to facilitating the movement of food through the digestive tract. Unlike striated muscles, smooth muscle contraction begins more slowly and lasts longer.
The onset of contraction is triggered by an increase in calcium ions within the sarcoplasm, similar to the process in striated muscle. However, smooth muscles have a relatively smaller reservoir of the sarcoplasmic...

Phase Diagrams

Phase Diagrams

A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...

Phase Transitions

Phase Transitions

Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...

You might also read

Related Articles

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

Sort by

Same author

Multicolor interband solitons in microcombs.

Light, science & applications·2026

Same author

Exploring the feedback limits of quantum dot lasers for isolator-free photonic integrated circuits.

Light, science & applications·2026

Same author

Heterogeneously-integrated lasers on thin film lithium niobate.

Nanophotonics (Berlin, Germany)·2025

Same author

Integrated laser technologies for artificial intelligence applications [Invited].

Optics express·2025

Same author

Broadband acousto-optic modulators on Silicon Nitride.

Nature communications·2025

Same author

PGDD 2.0: Plant Genome Duplication Database with updated content and tools.

Nucleic acids research·2025

Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026

Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026

Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026

Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026

Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026

Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Feb 14, 2026

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection

Published on: December 15, 2015

Phase tuning by length contraction.

Warren Jin, Ronald G Polcawich, Paul A Morton

|February 7, 2018

Summary

This summary is machine-generated.

This study introduces geometric deformation for optical phase tuning, improving efficiency by shrinking device size. This novel approach achieves ultra-low power tuning with record performance for applications in lasers, LIDAR, and telecommunications.

More Related Videos

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

Live Imaging and Analysis of Muscle Contractions in Drosophila Embryo

Live Imaging and Analysis of Muscle Contractions in Drosophila Embryo

Published on: July 9, 2019

Related Experiment Videos

Last Updated: Feb 14, 2026

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection

Published on: December 15, 2015

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

Live Imaging and Analysis of Muscle Contractions in Drosophila Embryo

Live Imaging and Analysis of Muscle Contractions in Drosophila Embryo

Published on: July 9, 2019

Area of Science:

Integrated photonics
Optical device engineering

Background:

Traditional optical phase tuners rely on effective index modulation.
Existing methods often have limitations in tuning efficiency and power consumption.

Purpose of the Study:

To explore optical tuning via geometric deformation.
To demonstrate improved tuning efficiency and ultra-low power consumption in integrated photonic devices.

Main Methods:

Investigating tuning by geometric deformation in ring resonators.
Optimizing device size and confinement for performance.
Utilizing silicon nitride and silicon platforms for fabrication.

Main Results:

Tuning efficiency (Vπ L) improves with decreasing device size to an optimal bend radius.
Demonstrated ultra-low power tuning (<10 nA current) across a full Free Spectral Range (FSR).
Achieved record performance: V_FSR = 16 V, Vπ L = 3.6 V dB, Vπ Lα = 1.1 V dB, and 1 MHz tuning response.

Conclusions:

Geometric deformation offers a superior alternative to index-shift tuning for integrated photonics.
Optimized designs show potential for state-of-the-art performance on silicon nitride and silicon platforms.
Applications span tunable lasers, optical phased arrays for LIDAR, and WDM telecommunication filters.