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Aqua  Fi, the technology that could take WiFi underwater



Aqua  Fi, the technology that could take WiFi underwater


A team of scientists is trying to take the Wi Fi connection underwater, where radio waves are difficult to transmit.

Air is the ideal medium for radiofrequency waves to travel, but the same does not happen in water. In an underwater environment, this type of waves find it very difficult to move and to transmit information to a point. Hence, to achieve a wireless connection, a new technology is needed. Where Wi Fi doesn’t work, a team of scientists has created a new technology, the AquaFi.

This achievement comes from the King Abdullah University of Science and Technology (KAUST), in Saudi Arabia. Aqua Fi is a form of data transmission that allows information to be sent through the water. Scientists have already send high definition video in an aquatic environment in 2018. Now they have perfected their system.

The system works by transmission of data by light. If a diver is diving with his smartphone, conveniently protected by an insulating case, and takes photos or videos, he can upload them to the Internet. This whole process implies that these images pass wirelessly, in the form of radio waves.to a device mounted on the diver’s equipment. It’s less than a meter away, so the transmission is successful.

From there the images break down into ultrafast pulses of light, each of which represents a 0 or a 1. These pulses are emitted to the surface, to a ship, by means of LED or laser light, depending on the depth. Up to 10 meters the use of LED technology is feasible, beyond which the laser is used.

On the ship, the receiver of the light pulses recomposes the information in the form of images. And thanks to a satellite connection, it transmits these images to the Internet.

The challenges of the deep

The use of light to send information is not new. In fact, LiFi already exists in the form of commercial products. But its use to do it within a body of water is more unexplored. Hence the researchers need to work more on your system to polish certain eventualities.

And it is that sending information by means of light waves through water has complications. On the one hand, we must attend to dispersion phenomenon, which can deflect the waves. But you also have to keep in mind that in the open sea, even in a swamp, the water moves. This movement of the medium through which the information is transmitted also makes it difficult for the data to arrive.