A group of researchers from Japan, the Netherlands and Italy have achieved a record speed of 22.9 petabits per second with a single fiber optic cable.
This means they can transmit 22 million gigabits of data or 2.9 billion HD movies in one second.
Earlier they set a record of 10 petabits and now they have broken the previous record by getting twice the speed.
Researchers have used SDM and WDM technologies for this.
(SDM is the use of multiple optical channels in a single fiber to increase the transmission capacity. / WDM is the use of wavelength to carry different data channels in the same optical path.)
By combining these technologies, they have been able to use 114 channels and 18.8THz bandwidth.
Currently, the fastest fiber cable in the world is the 319 terabits cable.
A four core optical fiber cable has been used for that.
However, a single fiber cable with 114 spatial channels has been used for this 22.9 petabits report.
Likewise, this is a short-distance transmission report done at test level.
