With the increasing communication between the world and the urgent need to acquire more information, huge technologies are striving to make our devices faster and support them with unprecedented data transmission infrastructure.
The best evidence for this development in data transmission is the recent speed of Internet connections, which has approached 10 gigabits per second.
In this regard, researchers at the National Institute of Information and Communication Technology (NICT) in Japan have demonstrated the ability to transmit data of more than one petabit per second.
using 0.125 mm diameter multicore fiber (MCF), TechXplore reported.
Advances in the manufacture of optical fibers
The world of telecommunications made a giant leap when copper cables were replaced by optical fibers, and the speed of data transmission increased more widely
It is the same infrastructure that allows you to make high-quality video calls and watch 4K movies.
Despite this, researchers are working on advanced fiber optic cables that look like the ones that run into your home
But it can support multiple propagation paths indoors. One of these methods involves using different methods to navigate within a single core.
In December 2020, researchers at NICT demonstrated the ability to transfer a petabyte (twice the basic unit of memory called a bit) of data using 15 modes in a single core.
However, to make this transmission work efficiently, signal processing is also needed to work in a MIMO (Multiple Input-Output) manners. What this means is that the signals are encoded as they travel through the kernel and to prevent them from being encoded we need specialized equipment to work on that when they are received. Google Ranking Factors: The 200+ Google Ranking Factors
This requires the use of dedicated integrated circuits and the practical application of this technology is difficult until we develop circuits on a large scale.
The other option is to transmit signals in one mode but using more cores in the optical fiber.
The result is multiple data transmission paths that are sent over optical fibers that look no different on the outside but on the inside carry millions of bits of data.
Since the manufacture of these cables is not very different from the manufacture of single-core cables, it is easier to bring them into commercial reality. Scientists create living human skin for humanoid robots
Advances in Signal Processing
The researchers at NICT used wavelength division multiplexing (WDM), in which signals of different wavelengths are sent through the same medium.
This allows more data to be transmitted simultaneously over the same cable.
This technology has been commercially exploited and fiber optic cable operators use the C and L bands to transmit their data.
Besides using these two bands, the researchers at NICT also included the recently explored S band during test transmission.
Using amplifiers dedicated to these bands, the researchers were able to transmit 801 wavelengths and achieved a record 20 THz optical bandwidth in multicore fiber, according to the press release.
The entire system transmitted data at a rate of 1.02 petabits per second over a distance of 31.68 miles (51 km). Engineers create a brain-like optical chip that processes two billion images per second!
As the world embraces 5G technology, it is expected that there will be a crowding-out in the amounts of data that will need to be transmitted
Techniques like this can ensure that the transition occurs effortlessly.