Terabit networks

The shape of things to come

Technological advances to aid the increasing demand for bandwidth, on the path towards the terabit network, should lead to optical signals that are flexible and adaptive, like water, argues Dr Maxim Kuschnerov and Dr Yin Wang

The battle of the modulation schemes

Oclaro's Adam Carter and Dan Tauber examine which modulation schemes – DMT, PAM4 or coherent – are likely to prevail in the race to higher-speed transmission for more cost-sensitive links

Breaking the glass ceiling

Scaling the capacity delivered by optical systems is becoming increasingly difficult, even as data traffic continues to grow exponentially. Pauline Rigby investigates new techniques that could postpone the inevitable ‘capacity crunch’

Soft optics, hard photons

Geoff Bennett examines the evolution of coherent super-channels and how the use of software programmable modulation formats gives operators new options for network optimisation

Capacity conundrum

With providers facing the challenges of keeping up with internet traffic growth, terabit-scale systems are on the rise, Robert Roe writes

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