Data centres are at the core of modern information networking due to the demands of mobile devices. This second edition offers insights into transport technology for data centres and the principal techniques for modern communication transmission of ultra-wideband channels. The book introduces digital transmission technologies and data centre networking, progressing to discussions on access and DC networking transmission technologies and super-channel transmission by multi-carrier sources, before concluding with a chapter on photonic signal processors. Revised and expanded as a second edition, this book provides a full update as well as the inclusion of all-optical routing, particularly all-optical networks and all-optical transmission. Key Features Covers techniques and technology involving multi-Tera-bits/s transmission for intra- and inter- data centre networking Discusses processing techniques for the handling of massive data capacity in data centres Covers all optical routing for such ultra-fast and ultra-high capacity networking in data centre networking Includes introductory remarks for general audiences, with the main text designed for technical specialists, engineers and scientists