CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Scalability analysis methodology for passive optical interconnects in data center networks using PAM

R. Lin ; Krzysztof Szczerba (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Erik Agrell (Institutionen för elektroteknik, Kommunikationssystem) ; Lena Wosinska ; M. Tang ; D. Liu ; J. Chen
Optics Communications (0030-4018). Vol. 403 (2017), p. 283-289.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Data center networks; Multi-level pulse amplitude modulation (M-PAM); Passive optical interconnect (POI); Scalability; Top-of-rack (ToR)



Denna post skapades 2017-10-04. Senast ändrad 2017-10-05.
CPL Pubid: 252263

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)