Silicon Photonics for Inter-Data Centre Interconnects

Jörg-Peter Elbers March, 2017PIC International Conference, Brussels

© 2017 ADVA Optical Networking. All rights reserved. Confidential.2

Optical Data Center Interconnect = ?

DCIs come in different flavors:

intra-board, intra-equipment,

intra-rack, intra-DC, inter-DC

DR4

© 2017 ADVA Optical Networking. All rights reserved. Confidential.3

Inter-Data Center Interconnect Architectures

global extension

global extension

Metro Connectivity:

• Data center distances <100km

• Ethernet, Fiber Channel, some Infiniband

• Point-to-point DWDM (low latency)

Long-Haul Connectivity:

• Globally distributed data centers

• Predominantly Ethernet

• Reconfigurable optical layer

© 2017 ADVA Optical Networking. All rights reserved. Confidential.4

Efficient and Scalable 400G DCI Solutions

Efficient Connectivity

Basis:

• 400G Ethernet ecosystem

• 25G DWDM transmitters

Solution:

• Eight-carrier direct detect

• Higher-order modulation

Sweet spot:

• Point-to-point interconnects

High-Performance Networking

Basis:

• OIF 400G framework

• Photonic integration

Solution:

• Dual-carrier coherent

• DP-QPSK/8QAM/16QAM

Sweet spot:

• Metro and core networking

PAM4

DMT

Leveraging latest electronics and photonics technologies in silicon

QPSK

8QAM

16QAM

© 2017 ADVA Optical Networking. All rights reserved. Confidential.5

Inter-DCI With DWDM and Direct Detection

PAM4 @ 56Gbit/s

DMT @ 56Gbit/s

With DC No DC No DC

[N.

Eis

elt,

A.

Dochhan,

et

al.,

Photo

nis

che

Netz

e ´

16]

© 2017 ADVA Optical Networking. All rights reserved. Confidential.6

Silicon Photonics-Based Realization

[N.

Eis

elt,

et

al.,

accepte

dfo

rO

FC 2

017]

© 2017 ADVA Optical Networking. All rights reserved. Confidential.7

Opportunities

• Large-scale integration

• Low-cost, non-hermetic package

• CMOS-style design flow and

IP block library approach

Challenges

• Laser and optical amplifier integration

• Low-cost SMF fiber interface

• Solder-reflow compatibility

Silicon Photonics-Based Transceivers

Vision: Make optical transceivers as easy to

manufacture and integrate as CMOS ICs

© 2017 ADVA Optical Networking. All rights reserved. Confidential.8

Silicon Photonics Enabling Exascale Data Networks

Platform for

development and

manufacturing of

application-specific

opto-electronic

integrated circuits

(ePICs) on Silicon

© 2017 ADVA Optical Networking. All rights reserved. Confidential.9

www.dimension-h2020.eu

CMOS and SiPh Integration With III-V Processing on CMOS Wafer Level

© 2017 ADVA Optical Networking. All rights reserved. Confidential.10

Developing the Next Generation:OIF 400G ZR Interop Project

Implementation Agreement

for 400G ZR (grey) / short

reach DWDM multi-vendor

interoperability

Assumptions: coherent lite,

single wavelength,

7nm DSP technology,

<15W total power

© 2017 ADVA Optical Networking. All rights reserved. Confidential.11

OIF IC-TROSA Project

Implementation agreement

for an integrated coherent

transmitter-receiver

optical sub-assembly

supporting high bandwidth

and high-order QAM

operation for DCI, metro and

LH applications

© 2017 ADVA Optical Networking. All rights reserved. Confidential.12

On-Board Optical Modules

12.8T 1RU switch application

1x & 2x 400G OBO module

25GBd PAM4 electrical I/F

400GBASE-R optical I/F

2-wire control, 3.3.V DC

On-board pluggable

Just launched coherent WG!

© 2017 ADVA Optical Networking. All rights reserved. Confidential.13

OSFP Launch

© 2017 ADVA Optical Networking. All rights reserved. Confidential.14

Summary

• Inter-data center interconnects require high capacity DWDM

• Silicon photonics-based transceivers are attractive in this space

• Commercial implementations (direct detect and coherent) exist

• Further advances are needed for next-generation solutions

We are just at the start of the silicon photonics journey!

IMPORTANT NOTICE

The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any 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 damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation.

Copyright © for the entire content of this presentation: ADVA Optical Networking.

Thank You

IMPORTANT NOTICE

The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any 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 damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation.

Copyright © for the entire content of this presentation: ADVA Optical Networking.

ABACUSFENDOI

Silicon Photonics EnablingExascale Data Networks

Financial support by the following projects is gratefully acknowleged: