Scientists in Japan have achieved a groundbreaking feat by transmitting data at an astonishing rate of 402 terabits per second through a standard fiber optic cable. This achievement, presented at a conference in San Diego, was made possible by tapping into previously unexplored frequency ranges within the fibers. By utilizing six different signal amplification methods and optical gain equalizers, the team covered the entire low-loss spectrum of the fiber, allowing for an unprecedented 37 THz of bandwidth over 1,505 channels across 31 miles. This record-breaking data rate, 25% higher than the previous record, paves the way for faster internet speeds beyond 5G services. Although implementing such speeds for consumer use would require significant upgrades, this research showcases the immense potential of existing fiber optic technology and offers a glimpse into the future of high-speed data transmission.