Niall Robinson's presentation at NGON 2018 in Nice explored the technologies paving the way for 400Gbit/s in the data center interconnect.

1. The 400G transition
NGON, Nice
June 2018

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400G is coming…
Two ingredients needed for 400Gbit/s roll-out:
• Switch silicon

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400G is coming…
Two ingredients needed for 400Gbit/s roll-out:
• Switch silicon (in a switch)

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Two ingredients needed for 400Gbit/s roll-out:
• Switch silicon (in a switch)
400G is coming…
Edge-Core: AS9716-32X

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400G is coming … but which 400G?
Two ingredients needed for 400Gbit/s roll-out:
• Switch silicon (in a switch)
• Plugs
QSFP-DD OSFP
http://www.qsfp-dd.com/ http://www.osfpmsa.org/

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COMPARISON OF QSFP-DD AND OSFP FORM FACTORS
Attribute QSFP-DD OSFP Comments
Physical size for
component
placement
(one side)
Approx. 723mm2 Approx. 1642mm2
Smaller QSFP-DD is good for higher
density switch/transport boxes
Larger OSFP is good for module
manufacturers
Power dissipation
Typically 12W
>14W is allowed
Up to 15W
QSFP-DD has been shown to work
with 15W power dissipation in
certain applications
Heat sinking
Implementation open
to module supplier
Specified by MSA
QSFP-DD offers more flexible heat
sinking options
Electrical interface 8x 50Gbit/s, PAM4 8x 50Gbit/s, PAM4
Backward
compatibility
Directly compatible
with QSFP & QSFP28
plugs
Offers adaptor for
compatibility to
QSFP28 plug
Recent
demonstrations
AOC, SR8, DR4, FR4,
FR8, LR8
AOC, SR4, 2xFR4, LR8 At OFC 2018

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What about DWDM 400G?
QSFP-DD OSFP OBO-8 LANE
Note: Drawings are not comparatively scaled
PLUGGABLE NOT PLUGGABLE

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Standardization inside these form factors
IC-TROSA (integrated circuit – transmit receive optical sub-assembly)
Contribution #OIF2016.301.05
Project start proposal by ADVA

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Standardization inside these form factors
IC-TROSA (integrated circuit – transmit receive optical sub-assembly)
Standardized:
• Functional architecture
• Max dimensions
• 15 x 22.5 x 3.6mm
• Electrical contacts
• Fiber locations
• Performance (20, 30, 40GHz classes)
• Integrated digital controls
• Management interface
• Digital communication interface
Supports single carrier:
• 100Gbit/s QPSK
• 200Gbit/s 8/16QAM
• 400Gbit/s 16/32/64QAM
• 600Gbit/s 64QAM
Type 1

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Distance matters

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Distance matters
QSFP-DD or OSFP plugs: 400ZR up to 120km
CFP2-DCO: Up to 700km
Trans/muxponders: Up to 1500km, enormous adaptability to line conditions
TeraFlex™

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And when?
2018: Technology testing
2019: Initial deployments
2020: Ramping up

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Summary
400Gbit/s is coming
Switch silicon and switches are here
Client side plug form factor leaning towards QSFP-DD but OSFP options available
DWDM breaks out into multiple form factors:
• QSFP-DD or OSFP for very short links (campus/metro)
• CFP2-DCO for intermediate distances (metro/regional)
• Traditional trans/muxponders for long haul (plus significant performance optimizations)
Technology trials this year, initial deployments next year, ramping in 2020

14. Thank you
IMPORTANT NOTICE
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reproduction, publication or reprint, in whole or in part, is strictly prohibited.
The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA
Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special
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Copyright © for the entire content of this presentation: ADVA Optical Networking.
nrobinson@advaoptical.com
Niall Robinson
Vice President
Global Business Development
Phone: +1 972 759 1262
Fax: +1 972 759 1201
Mobile: +1 978 933 1081
nrobinson@advaoptical.com
ADVA Optical Networking NA. Inc.
2301 N. Greenville Avenue
Suite 300
Richardson, TX 75082
USA
www.advaoptical.com