A research team in China has found a way to produce 3D optical chips in seconds, a process that previously took hours. The breakthrough could reshape how data travels inside computers, replacing slow electrical signals with light.
From hours to seconds: a new laser trick
The team, led by researchers at the University of Science and Technology of China in Hefei, used a femtosecond laser to write tiny optical circuits inside a glass chip. Normally, this method requires careful step by step writing, which is slow. The new approach uses a laser beam shaped like a needle to carve entire layers at once. That change cut the production time from hours to just seconds.
Why local researchers and industry took notice
Optical chips use light to move data, which is faster and uses less energy than traditional electronic chips. But making them has been too slow for mass production. The Chinese team's method solves that bottleneck. The chips they made are three dimensional, meaning they can pack more pathways into a smaller space. This matters for data centers, supercomputers, and any system that needs to move huge amounts of information quickly.
What the team actually built
The researchers fabricated a 3D optical chip with a structure called a waveguide array. They tested it by sending light through the chip and measuring how well it stayed on course. The results showed the chip worked as intended, with low signal loss. The team published their findings in a peer reviewed journal, detailing how the new laser technique can be scaled up.
The significance of this work is not just about speed. It suggests that optical chips, long seen as a future technology, might now be practical to manufacture. In China, where the government has poured money into semiconductor research, this advance fits into a larger push to lead in next generation computing. The method still needs to be tested at commercial scales, but the principle is now proven.
