Blow by blow

One of the chief advantages of optical fibre cables – over those made from copper – is that they are significantly smaller and lighter, so are easier to handle and install. Standard twisted-pair copper cables used for the old telephony trunk networks were enormously heavy, with typical cables measuring between 20 and 40mm in diameter and weighing almost half a tonne per kilometre. And that’s only a 100-pair cable; a 1,000-pair cable would frequently weigh more than three tonnes per kilometre.


Six months after it became mandatory for copper and fibre cables supplied to EU/EEA member states to comply with the Construction Product Regulation and carry CE marking, Keely Portway asks what, if any, effect this has had on cable suppliers


To continue growing data traffic, optical scientists are tackling tough questions about nonlinear effects in optical fibre, discovers Andy Extance 


January of this year saw Jerry Rawls step down as chief executive of Finisar, a company he had grown from obscurity to worldwide success. He talks to Rebecca Pool about building his empire, the firm’s new CEO and a future that could include Oclaro*