Knots are generally understood to form due to twists and turns of long, flexible materials that keep shoes on your feet or ...

Light can tie knots—literally. Engineers at Duke University have managed to manipulate laser beams to form intricate 3D patterns called optical knots, using custom-designed optics. These twisted beams ...

able to restore chaotic signals in free-space optical communication links distorted by atmospheric turbulence. Using a system of optical antennas integrated into a programmable photonic chip, the ...

Engineers at Duke University have successfully manipulated laser beams to create intricate 3D patterns known as 'optical ...

Japanese electronics giant NEC claims to have achieved Japan’s longest terrestrial wireless optical communication, or free-space optical (FSO) communication, over a distance of more than 10 km in a ...

NEC achieves Japan's longest terrestrial wireless optical communication over 10 km TOKYO, Apr 25, 2025 - (JCN Newswir ...

The black, rectangular box where turbulence was created for laser light to pass through. The setup allowed researchers to demonstrate the stability of optical knots as they pass through turbulence.

Researchers have developed a new tool for measuring velocities in a Bose-Einstein condensate superfluid and applied it to ...

In a large variety of fields, the development of ever more demanding optical systems now requires a thorough understanding of the impact of atmospheric turbulence together with the development of ...

In addition to the variable transmission of the atmosphere due to different weather conditions, the influences of optical turbulence on beam travelling and beam deformation are also considered.

The work shows that optical knots could be used as a reliable method to transmit encoded information or to measure turbulence in pockets of air. Knots are generally understood to form due to ...

NEC has successfully achieved Japan's longest terrestrial wireless optical communication, or free-space optical (FSO) ...