You may need an infrared laser if you want a superfast computer that can handle gaming, streaming, and all your other digital needs. Unfortunately, at the moment, consumer devices cannot run on lasers. However, researchers have worked hard in recent years to realize this vision.
Humanity depends on the transfer of information, which we can now do at ever-increasing speeds. The latest record is so fast that we must compare it to the world’s internet to comprehend it.
New Speed Record
In the latest technological advancement, a new optical chip can bend laser light to transmit a blistering 1.8 petabits (Pbit/s), or more than 1 million gigabits per second. To put it into perspective, that amount of data is equivalent to sending twice the world’s internet traffic each second.
According to the National Institute of Information and Communications Technology, this breaks the previous record set in May 2022 of 1.02 Pbit/s.
Optical Chip
Most computer chips use electricity to send data, but this new gadget uses light instead. According to a paper – published on October 20, 2022, in Nature Photonics by scientists in Sweden, Denmark, and Japan – once a laser delivers information to the chip, it utilizes a comb to separate data into hundreds of frequencies (or colors).
To be more specific, the chip splits the data into 223 chunks, each corresponding to a different part of the visible light spectrum. As a result, information can move swiftly and effectively without getting lost in the process. After processing, the data is recombined into a single beam and sent through a fiber optic cable.
Victor Torres Company, a professor at Chalmers University of Technology and head of the research group that made the chip, said in a statement:
“What is special about this chip is that it produces a frequency comb with ideal characteristics for fiber-optical communications – it has high optical power and covers a broad bandwidth within the spectral region that is interesting for advanced optical communications.”
Massive Potential for Scaling
The group put their system into a device the size of a matchbox and fed it multiple data channels. Then, they connected it to another device using a fiber cable almost 5 miles long to confirm that it could transmit high-quality data.
According to the researchers, it may eventually even reach 100 Pbit/s, which is a speed that is practically unimaginable considering today’s capabilities. The team stated in their paper that their “findings could mark a shift in the design of future communication systems, targeting device-efficient transmitters and receivers.”
Head of the Center of Excellence for Silicon Photonics for Optical Communications (SPOC) at DTU, Professor Leif Katsuo Oxenløwe, said:
“Our calculations show that with the single chip made by Chalmers University of Technology, and a single laser we will be able to transmit up to 100 Pbit/s. The reason for this is that our solution is scalable—both in terms of creating many frequencies and in terms of splitting the frequency comb into many spatial copies and then optically amplifying them, and using them as parallel sources with which we can transmit data. Although the comb copies must be amplified, we do not lose the qualities of the comb, which we utilize for spectrally efficient data transmission.”
In addition, the researchers produced a computational model to theoretically assess the potential for data transmission using a single chip identical to the one utilized in the experiment. The calculations revealed a tremendous potential for scaling up the solution.
Not only is the new technology faster, but it is much more energy efficient. “In other words, our solution provides a potential for replacing hundreds of thousands of the lasers located at Internet hubs and data centers, all of which guzzle power and generate heat. We have an opportunity to contribute to achieving an Internet that leaves a smaller climate footprint,” said Leif Katsuo Oxenløwe.
Despite the many challenges looming ahead, it is exciting to see how laser transmission technology is moving us closer to being able to process data at optical speeds. This technology holds promise for a variety of industrial applications, from faster inter-continental communications and improved data centers to better medical imaging devices and robots. We are living in an era where science is pushing boundaries further than ever before. With further research into this promising technology, we can hope for even greater success in the future.
