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Silicon Photonics by Roy Rubenstein, Daryl Inniss

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Chapter 7

Data Center Architectures and Opportunities for Silicon Photonics

Abstract

Networking an ever-growing number of servers presents a key challenge in large-scale data centers. The capacity of switch silicon continues to grow, but it is not keeping pace with demand as the number of switches and amount of associated interconnect are rising exponentially. Silicon photonics offers solutions at several levels: It can benefit interconnect, it can be used to tackle input–output issues of large chips like switch silicon and processors, and it can enable new and higher-performance system designs. Interestingly, the use of optics to enable new system designs has already been demonstrated, and while the early examples have not been commercially successful, ...

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