Sending 1.84 petabits of data per second via a fiber-optic cable over a distance of 7.9 km

https://techxplore.com/news/2022-10-petabits-fiber-optic-cable-distance-km.html

"This, the researchers noted, allowed for the creation of a frequency comb, by which data was transmitted in different colors through the fiber cable. In addition to transferring huge amounts of data quickly, it also prevents the data streams from interfering with each other. The researchers then put their chip into an optical processing device, which they describe as about the size of a matchbox—they describe the result as a "massively parallel space-and-wavelength multiplexed data transmission" system"

See also: Chip can transmit all of the internet's traffic every second
https://www.newscientist.com/article/2342833-chip-can-transmit-all-of-the-internets-traffic-every-second/

Related: The optical fibre that keeps data safe even after being twisted or bent
https://www.bath.ac.uk/announcements/the-optical-fibre-that-keeps-data-safe-even-after-being-twisted-or-bent/