Researchers from Nokia Bell Labs, Deutsche Telekom T-Labs and the Technical University of Munich have managed to achieve incredible broadband speeds of 1 terbit per second (Tb) over fibre. That’s close to its theoretical maximum limit.
The scientists achieved the feat by using a new modulationtechnique called Probabilistic Constellation Shaping (PCS). It's acomplex process, but the result is that it allows data to pass downa cable with less interference.
Nokia CTO and Bell Labs president Marcus Weldon said: "PCSoffers great benefits to service providers and enterprises byenabling optical networks to operate closer to the Shannon Limit tosupport massive data centre interconnectivity and provide theflexibility and performance required for modern networking in thedigital era."
The Shannon Limit refers to the maximum limit that acommunications channel can carry data without errors. Theexperiment was conducted as part of the Safe and Secure EuropeanRouting (SASER) project, and tested on a real world fibre opticnetwork belonging to Deutsch Telecom, and the researchers reckonthey're close to hitting the limits of that network.
While providers like BT have achieved speeds of 2Tb and moreover their own closed systems, this is the fastest speeds achievedwith a commercially available network, and something that couldhave huge benefits for businesses in particular, where fast datatransmission is essential.
Source: ISPReview
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