To keep pace with the tremendous bandwidth growth in cloud networking, web-scale providers, such as Microsoft, have been quick to adopt elastic features of modern optical networks. In particular, colorless flexible-grid reconfigurable optical add–drop multiplexers, bandwidth-variable transceivers, and the ability to choose a variety of optical source types are integral for cloud network operators to improve network efficiency while supporting a variety of service types. We take an in-depth look at Microsoft’s deployed network infrastructure and discuss the impact of elasticity on network capacity and flexibility. As a proof-of-concept, a new elastic open line system (OLS), in which the line system components and the signal sources are disaggregated, was assembled in a laboratory environment, and 4000 km of propagation over primarily nonzero dispersion-shifted fiber using multiple source types is demonstrated. Finally, the long-term goal of unifying the control plane of the OLS, DWDM signal sources, routers, and Ethernet switches under a single software-defined network controller is briefly addressed.
© 2016 Optical Society of AmericaFull Article | PDF Article
25 May 2016: A correction was made to the title.
OSA Recommended Articles
Annachiara Pagano, Emilio Riccardi, Marco Bertolini, Vitaliano Farelli, and Tony Van De Velde
J. Opt. Commun. Netw. 7(1) A52-A58 (2015)
J. M. Fabrega, M. Svaluto Moreolo, L. Martín, A. Chiadò Piat, E. Riccardi, D. Roccato, N. Sambo, F. Cugini, L. Potì, S. Yan, E. Hugues-Salas, D. Simeonidou, M. Gunkel, R. Palmer, S. Fedderwitz, D. Rafique, T. Rahman, Huug de Waardt, and A. Napoli
J. Opt. Commun. Netw. 8(7) A23-A33 (2016)
M. Song, E. Pincemin, A. Josten, B. Baeuerle, D. Hillerkuss, J. Leuthold, R. Rudnick, D. M. Marom, S. Ben Ezra, J. F. Ferran, G. Thouenon, P. S. Khodashenas, J. M. Rivas-Moscoso, C. Betoule, D. Klonidis, and I. Tomkos
J. Opt. Commun. Netw. 8(7) A126-A140 (2016)