Terabit networks

FEATURE

The battle of the modulation schemes

Many industry experts are calling data the ‘new oil’ and just as oil once created amazing economic opportunities, it also produced many challenges in drilling for and distributing the oil. The same is true today with data, except the challenge is making the entire pipeline faster, while also ensuring that networks become easier and more cost-effective to deploy.

FEATURE

Breaking the glass ceiling

The optical fibres that crisscross our globe are often described as having ‘infinite capacity’, but that’s not strictly correct. While optical fibres do represent an extremely efficient communications channel – a single optical fibre can carry more information than all of the wireless spectrum combined – their capacity is not truly unlimited.

FEATURE

Soft optics, hard photons

Since products based on coherent super-channels hit the market in mid-2012, this technology has transformed the way that service providers deploy long-haul capacity. A super-channel is an evolution in DWDM technology in which multiple optical carriers, implemented on a single line card, are seen as a single unit of capacity, and are brought into service in one operational cycle. Super-channels take the spectral efficiency that is delivered by a coherent transponder and make it operationally scalable beyond 100Gb/s.

FEATURE

Capacity conundrum

As internet traffic grows year on year, service providers have to deliver more capacity at cheaper rates. Simply putting more fibre into the ground is a very expensive solution to the problem in most cases, so network providers are under pressure to come up with innovative solutions that will increase the capacity of fibre that has already been deployed within the network infrastructure.

Feature

Will quantum-resistant encryption be enabled by quantum technology or mathematics? Helmut Griesser examines technologies for the post-quantum world

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The increasing value of optical fibre assets in metropolitan areas is shaping the business models of companies that provide access to them, finds Andy Extance

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As 2017 draws to a close, Scott Wilkinson looks ahead to what’s in store for the optical communications industry in 2018

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An English city with a world-class 5G test-bed is about to make telecommunications history, reports Rebecca Pool

Feature

Since its inception in 2004, the FTTH conference and exhibition has been held annually, with each event taking place in a different European city. This year the event will be held in Valencia, Spain from 13 to 15 February 2018.