Scalability analysis methodology for passive optical interconnects in data center networks using PAM
Artikel i vetenskaplig tidskrift, 2017
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.
Passive optical interconnect (POI)
Top-of-rack (ToR)
Multi-level pulse amplitude modulation (M-PAM)
Data center networks
Scalability
Författare
R. Lin
Huazhong University of Science and Technology
Kungliga Tekniska Högskolan (KTH)
Krzysztof Szczerba
Chalmers, Mikroteknologi och nanovetenskap, Fotonik
Erik Agrell
Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk
Lena Wosinska
Kungliga Tekniska Högskolan (KTH)
M. Tang
Huazhong University of Science and Technology
D. M. Liu
Huazhong University of Science and Technology
J. Chen
Kungliga Tekniska Högskolan (KTH)
Optics Communications
0030-4018 (ISSN)
Vol. 403 283-289Ämneskategorier
Elektroteknik och elektronik
DOI
10.1016/j.optcom.2017.07.052