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Scalability analysis methodology for passive optical interconnects in data center networks using PAM
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Optical Network Laboratory (ON Lab). Huazhong University of Sci&Tech (HUST), China.
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Optical Network Laboratory (ON Lab).
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2017 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 403, 283-289 p.Article in journal (Refereed) Published
Abstract [en]

A framework is developed for modeling the fundamental impairments in optical datacenter interconnects, i.e., the power loss and the receiver noises. This framework makes it possible, to analyze the trade-offs between data rates, modulation order, and number of ports that can be supported in optical interconnect architectures, while guaranteeing that the required signal-to-noise ratios are satisfied. To the best of our knowledge, this important assessment methodology is not yet available. As a case study, the trade-offs are investigated for three coupler-based top-of-rack interconnect architectures, which suffer from serious insertion loss. The results show that using single-port transceivers with 10 GHz bandwidth, avalanche photodiode detectors, and quadratical pulse amplitude modulation, more than 500 ports can be supported.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 403, 283-289 p.
Keyword [en]
Data center networks, Multi-level pulse amplitude modulation (M-PAM), Passive optical interconnect (POI), Scalability, Top-of-rack (ToR)
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-212201DOI: 10.1016/j.optcom.2017.07.052ISI: 000410638900047Scopus ID: 2-s2.0-85026638238OAI: oai:DiVA.org:kth-212201DiVA: diva2:1134562
Funder
Swedish Research Council, 501100004359Swedish Foundation for Strategic Research , 501100001729
Note

QC 20170821

Available from: 2017-08-21 Created: 2017-08-21 Last updated: 2017-10-10Bibliographically approved

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CiteExportLink to record
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