Researchers from Sun Yatsen University in China have proposed new technology to increase the capacity of fibre optic channels, and during the experiments scientists have been able to reach 1 Pbit/s with spatial multiplexing in orbital moment mode.
The proposed system combines spatial, polarization and dense multiplexing with a split in wave length. Using three compression methods, it was possible to transmit only 180 μm of data at 1.02 Pb/s to a 34 km 7-gile fibre with a ring centre diameter.
In order to transmit the data, researchers used orbital angular moment mode, with three groups of unborn angular moment mode per kernel and four modes per group, each mode being loaded with 312 wave lengths resulting from dense multiplexing.
A traditional approach aimed at increasing the number of data that can be transmitted on fibre-optics is based on an increase in the number of channels or modes in one channel; this technology has already significantly increased the capacity, but its capacity is limited, explained by scientists.
The use of the MIMO spatial coding is becoming increasingly difficult as the number of fashions increases. The new technology allows these limitations to be overcome.