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

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...

You might also read

Related Articles

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

Sort by

Same author

Large-scale integrated optoelectronic chaos for machine learning acceleration.

Nature communications·2026

Same author

Autophagy activation by urolithin-a derivative UA-36 mitigates Friedreich's ataxia pathologies induced by frataxin deficiency.

Molecular biomedicine·2026

Same author

A Comparative Review of Biological, Electrochemical, and Membrane-Based Methods for Direct Ocean Carbon Capture.

Materials (Basel, Switzerland)·2026

Same author

Neuronal deletion of PDE7A averts morphine-induced behavioral plasticity and impairs downstream AKT signaling.

Molecular biology reports·2026

Same author

Leveraging direct learning and reinforcement learning architectures for pre-equalization in high-speed VLC systems.

Optics express·2026

Same author

Photonic computing enabled end-to-end image compression and reconstruction with adjustable ratio and high-fidelity.

Nature communications·2026

Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026

Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026

Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026

Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026

Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026

Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 3, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

High-accuracy multi-channel optical transfer delay measurement using time-gated phase-based ranging.

Ting Qing, Shupeng Li, Zongxin Xu

|June 1, 2026

Summary

This summary is machine-generated.

This study introduces a novel parallel technique for measuring optical transfer delay (OTD) across multiple channels, achieving high accuracy and efficiency for optical systems. The method enables simultaneous measurement of 8 channels with ±0.25 µps precision.

More Related Videos

A Protocol for Real-time 3D Single Particle Tracking

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

Related Experiment Videos

Last Updated: Jun 3, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

A Protocol for Real-time 3D Single Particle Tracking

A Protocol for Real-time 3D Single Particle Tracking

Published on: January 3, 2018

Area of Science:

Photonics and Optical Engineering
Telecommunications Systems

Background:

Accurate optical transfer delay (OTD) measurement is vital for optical phased array antennas, fiber-optic sensors, and multichannel optical communications.
Conventional methods for OTD measurement are often single-channel, requiring sequential switching for multi-channel analysis, leading to inefficiency.

Purpose of the Study:

To develop and demonstrate a high-accuracy, parallel multi-channel OTD measurement technique.
To overcome the limitations of sequential single-channel measurements in complex optical systems.

Main Methods:

Utilized time-gated phase-based ranging for OTD measurement.
Employed Wavelength Division Multiplexing (WDM) to assign unique wavelengths to probe signals for each channel, enabling parallel excitation and single-receiver detection.
Separated overlapping channel responses in the time domain and retrieved phase response via time-domain gating and frequency-domain processing.

Main Results:

Successfully demonstrated simultaneous parallel measurement of 8 channels.
Achieved a measurement precision of ±0.25 µps.
Validated the technique's ability to extract delay through the linear slope of the unwrapped phase.

Conclusions:

The proposed technique offers a simple architecture, high precision, and multi-channel scalability for OTD measurement.
Provides an efficient solution for characterizing complex optical networks and multi-core fiber systems.
Enables parallel, high-accuracy OTD measurements, improving efficiency over sequential methods.