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

Atomic Force Microscopy

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

You might also read

Related Articles

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

Sort by

Same author

[Influence of sampling satisfaction using endometrial sampling device and related factors for pathology diagnostic accordance rate].

Zhonghua fu chan ke za zhi·2014

Same author

Effect of the number of positive lymph nodes and lymph node ratio on prognosis of patients after resection of pancreatic adenocarcinoma.

Hepatobiliary & pancreatic diseases international : HBPD INT·2014

Same author

Mechanisms of human erythrocytic bioactivation of nitrite.

The Journal of biological chemistry·2014

Same author

Simulation research on the natural degradation process of PBDEs in soil polluted by e-waste under increased concentrations of atmospheric O(3).

Chemosphere·2014

Same author

Two-dimensional colloidal crystal assisted formation of conductive porous gold films with flexible structural controllability.

Journal of colloid and interface science·2014

Same author

REDD1 attenuates cardiac hypertrophy via enhancing autophagy.

Biochemical and biophysical research communications·2014

Search research articles

Related Experiment Video

Updated: May 3, 2026

Operation of the Collaborative Composite Manufacturing CCM System

Operation of the Collaborative Composite Manufacturing CCM System

Published on: October 1, 2019

Common-path FSOC terminal enabled by a terraced MCF and gradient-descent laser nutation algorithm.

Qirun Fan, Zhen Wang, Yi Liu

|May 1, 2026

Summary

This study introduces a novel common-path free-space optical communication (FSOC) terminal using terraced multi-core fiber and a gradient-descent laser nutation algorithm for precise beam alignment, achieving rapid link restoration and high-speed data transmission.

More Related Videos

Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

Published on: October 6, 2019

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

Related Experiment Videos

Last Updated: May 3, 2026

Operation of the Collaborative Composite Manufacturing CCM System

Operation of the Collaborative Composite Manufacturing CCM System

Published on: October 1, 2019

Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

Published on: October 6, 2019

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

Area of Science:

Optical Engineering
Telecommunications
Photonics

Background:

Free-space optical communication (FSOC) systems demand precise beam alignment for reliable data transmission.
Traditional alignment methods often involve complex optical paths, increasing system loss and bulk.
Developing efficient and robust alignment solutions is critical for advancing FSOC technology.

Purpose of the Study:

To propose and validate a novel common-path FSOC terminal design.
To enhance beam alignment accuracy and speed using a terraced multi-core fiber and a gradient-descent laser nutation algorithm.
To demonstrate the system's performance under realistic outdoor conditions and high data rates.

Main Methods:

Implementation of a common-path FSOC terminal integrating a terraced multi-core fiber (MCF).
Development and application of a gradient-descent laser nutation (GDLN) algorithm for fine beam alignment.
Experimental validation on a collimated-light tunnel and an 860m outdoor link with induced disturbances.

Main Results:

Achieved a fine-alignment field of view (FOV) of up to ±3.33 mrad.
Demonstrated automatic link restoration within 4 seconds after external disturbances of 3°.
Successfully transmitted data at 10 Gbps with a bit error rate (BER) of 1.242×10^-11.

Conclusions:

The proposed common-path FSOC terminal effectively addresses the limitations of conventional alignment schemes.
The GDLN algorithm combined with MCF provides robust and rapid beam alignment capabilities.
The system shows significant potential for reliable, high-speed outdoor FSOC links.