Cyberspace has become symbolic of the computing devices, networks, fibre-optic cables, wireless links and other infrastructure that bring the internet to billions of people around the world.

网络空间已成为计算机设备、网络、光纤电缆、无线连接和其他基础设施的象征，这些基础设施将互联网带给全世界数十亿人。

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Light is already used to transmit data across fibre optic networks at high speed.

光的数据传输已在光纤网络中得以实现，且速率很高。

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Optical-fibre networks can use DWDM (dense wavelength-division multiplexing), in which different data signals are sent in different wavelengths of light in the fibre-optic medium.

光纤网络可以使用高密度波分多任务，不同的信息讯号以不同波长的光在光纤介质中传送。

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The upshot was a huge increase in the number of competitors and of overlapping fibre-optic networks.

ECONOMIST: Booms and busts

The latter have built fibre-optic networks across many countries and can offer not only telephones but broadband connections and television too.

ECONOMIST: Taking the battle online | The

Best of all, WorldCom has local fibre-optic telephone networks in 86 American cities.

ECONOMIST: WorldCom tucks in��again