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Mark Filer1, Steven Searcy2, Yang Fu3, Radha Nagarajan3, and Sorin Tibuleac2
1. Microsoft Corporation, Redmond WA, 2. ADVA...
Azure WAN
Backbone
Region
Regional architecture
long haul
≤ 70 km
4/8/16 pair
Unique aspects of Microsoft DCI
Microsoft DCI fiber plant distance and loss distributions
PAM4 QSFP28 DWDM transceiver
PAM4
4 Tb/s
EDFA
L2/3switch
36xQSFPLinecard
Mux/Demux
EDFA
TDCMx4
QSFP28
...
DCF
QSFP28QSFP28QSFP28QSFP28
QSFP28
QSFP28
QSFP28
fiber
s...
CD tolerance
80 km transmission Delivered OSNR
Q-factor
Nonlinear tolerance
Span loss tolerance
practical FEC limit
Demonstration of commercial 100G PAM4 transceiver and
open line system
Supports 4 Tb/s up to 80 km with margin
Line system...
mark.filer@microsoft.com
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OFC 2017 (W4D.4) - Microsoft innovation in regional Data Center Interconnect (DCI)

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Demonstration and Performance Analysis of 4 Tb/s DWDM Metro-DCI System with 100G PAM4 QSFP28 Modules. Presented at OFC 2017.

Published in: Engineering
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OFC 2017 (W4D.4) - Microsoft innovation in regional Data Center Interconnect (DCI)

  1. 1. Mark Filer1, Steven Searcy2, Yang Fu3, Radha Nagarajan3, and Sorin Tibuleac2 1. Microsoft Corporation, Redmond WA, 2. ADVA Optical Networking, Norcross GA, 3. Inphi Corporation, Santa Clara CA
  2. 2. Azure WAN Backbone Region Regional architecture long haul ≤ 70 km 4/8/16 pair
  3. 3. Unique aspects of Microsoft DCI Microsoft DCI fiber plant distance and loss distributions
  4. 4. PAM4 QSFP28 DWDM transceiver PAM4 4 Tb/s
  5. 5. EDFA L2/3switch 36xQSFPLinecard Mux/Demux EDFA TDCMx4 QSFP28 ... DCF QSFP28QSFP28QSFP28QSFP28 QSFP28 QSFP28 QSFP28 fiber span VOA x36 ADVA SmartAmp System diagram
  6. 6. CD tolerance
  7. 7. 80 km transmission Delivered OSNR Q-factor
  8. 8. Nonlinear tolerance
  9. 9. Span loss tolerance practical FEC limit
  10. 10. Demonstration of commercial 100G PAM4 transceiver and open line system Supports 4 Tb/s up to 80 km with margin Line system performance and features make deploying at cloud-scale feasible with sufficient margins Summary
  11. 11. mark.filer@microsoft.com

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