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
Mark Filer, Jamie Gaudette, Yawei Yin, Denizcan Billor, Zahra Bakhtiari, and Jeffrey L. Cox
J. Opt. Commun. Netw. 11(10) C94-C108 (2019)
Roberto Proietti, Chuan Qin, Binbin Guan, Nicolas K. Fontaine, Shaoqi Feng, Alberto Castro, Ryan P. Scott, and S. J. B. Yoo
J. Opt. Commun. Netw. 8(7) A171-A179 (2016)
John D. Downie, Ming-Jun Li, and Sergejs Makovejs
J. Opt. Commun. Netw. 8(7) A1-A11 (2016)