Datacenter Interconnects – The Road Ahead

Chris Pfistner

NGON Conference 2016

Nice, France

© 2016 Lumentum Operations LLC 2

Table of Contents

The Cloud is Changing the World… and Optical Interconnects

Evolution of Datacenter Architectures

Key Technologies for Next Gen Interconnects

Optical Module Evolution – Smaller, Faster and Less Power

Summary and Conclusions

© 2016 Lumentum Operations LLC 3

Global market for public cloud services is projected to grow by

17% to $204B in 2016 according to Gartner

Cloud Services – Market Share (Gartner 2016)

It’s All in the Cloud! Global Datacenter Infrastructure spending reaches

new record in first quarter of 2016

Source: LightCounting & Lightwave Magazine

Source: LightCounting & Forbes

Forecast

© 2016 Lumentum Operations LLC 4

Ever Larger Switches Require Higher Capacity Interconnects

Gateway

Spine

Leaf

Server

Migration to fewer, larger switches drives higher capacity interconnects!

DCI DCI

© 2016 Lumentum Operations LLC 5

Major Transitions and Innovations in Optical Communications

1980 1990 2000 2010 20201970

1st Fiber

Optic Cable

developed

by Corning

(MMF)

1st Fiber Optic

System using

Amps & WDM

Coherent

transmission

adopted in

Long Haul

transmission

Tunable

lasers start

replacing

fixed DWDM

lasers

1st Fiber

Optic

System for

1.3 & 1.55

µm (SMF)

1st Fiber

Optic

System

using 10G

per λ

Optical Transport System Evolution

Client-Side Transmission10M

1x9, 2x9

100M

1x9, 2x91G SFF/SFP

10G SFP+

25/40/100G

CFP/CFP2/4

QSFP+/28

© 2016 Lumentum Operations LLC 6

Key Technologies for Next Gen Interconnects

Higher Order Modulation

(HOM)

Volume Manufacturing

Low Cost Packaging

PAM4

NRZ

Direct Detection:Coherent Transmission:

Integrated Photonics:

Wafer Level Testing:

Module Assembly:

Wafer Fab:

© 2016 Lumentum Operations LLC 7

Enterprise and Hyperscale Datacenter Interconnect Adoption

10G

40G

100G

400G

1T

1998 2002 2006 2010 2014 2018 2022

Hyperscale taking

lead in new

technology adoption

Enterprise driving

technology and product

development

Hyperscale Datacenters are Becoming Technology Drivers!!

Lumentum internal data

© 2016 Lumentum Operations LLC 8

1

10

1 10 100

Module Architectures – Trending to Fewer Lanes

Lowest cost per bit always favors fewer wavelengths – historically 4 lanes max

Data Rate per Lane/Wavelength

10G2.5G 100G25G 50G 200G 400G

NRZ HOM

x1

x4

x10

# L

an

es

Inspired by Mark Nowell, Cisco, OFC 2016

1M units

per year

2010

2014 2016

© 2016 Lumentum Operations LLC 9

Module Evolution – Faster, Smaller & Lower Power

Total CapacityFace Plate LayoutForm Factor

CFP

CFP2

CFP4

QSFP28

OSFP

QSFP-DD

Modules per 1RU Module Power

4 400G 8-32W

8 800G < 12W

32 3.2T < 6W

32 3.2T < 3.5W

12.8T32 ~ 10W

CFP8 16 6.4T < 12W

© 2016 Lumentum Operations LLC 10

Summary and Conclusions

Hyperscale datacenters are driving next gen interconnects

Constant quest for smaller, faster & lower power modules

Three core technologies are essential:– Higher Order Modulation (HOM)

– Integrated Photonics and Wafer Level Assembly & Testing

– Volume Manufacturing

Introduction of Client-Side 400G modules expected for 2018

Thank You!

Merci!

Danke schön!

Grazie!

Gracias!

Спасибо

谢谢ありがとう