Towards an optical ether [optically routed broadband network]

The authors propose a novel technique to exploit the unused bandwidth in optical fibres to develop an optically routed broadband network that is potentially deployable on a scale matching that of the UK national network. Furthermore, the techniques proposed allow such a network to evolve gradually from a few dense wavelength division multiplexed (DWDM) transmission links through sections of optically routed core network to reach finally a fully optically connected `house to core network to house´ ATM connection. The design provides for 25 million customers with in excess of 3 Mbit/s capacity per customer. The technology proposed relies on DWDM transmission and optical space switching without time or wavelength shifting