China: Data transmited at a rate of 1.25 gigabits per second across a distance of 143 kilometres

Engineers in China have used a chaos-based system to pipe data securely through a fibre-optic at a rate of 1.25. gigabits per second across a distance of 143 kilometres. The team points out that their greatest success in this physical form of encryption was in the use of off-the-shelf components. They add that this keeps costs down significantly. Moreover, there is no need to use dispersion compensating fibre (DCF) or forward-error correction (FEC).

The record-breaking physically encrypted transmission of 1.25 gigabits per second over 143 kilometres is a major advance. The team, however, points out that they can achieve double that data rate over a shorter range, 25 kilometres. It is only a matter of time and development before the longer distance can sustain the higher data rate.

https://phys.org/news/2019-05-record-breaking-chaotic-transmission.html