Quo Vadis DWDM?

Beyond 100G

Content

• Era of 100G beyond

• 400G solution

• 400G SC Field trial

Tomorrow becomes today

3

Accelerating growth of technology

4

Hypergrowth: Concurrent LTE + HD

Video + Cloud adoption

8

Optical networks in last decade Optical networks in the next decade – redefined by

hypergrowth

2017 2018 2019 2020 2021 2022 2007 2009 2010 2011 2012 2013 2014 2015 2016

2007 iPhone kicks off mobile

broadband explosion

MOBILE DATA Mobile data volumes up

8000% over four years

2008 – 2011 (AT&T)

GLOBAL IP TRAFFIC 78% CAGR 2011 – 2016 (Cisco)

CONNECTIVITY 10 Billion mobile connected

devices by 2020

(Morgan Stanley)

CLOUD Global cloud traffic to grow

to 4.3 zetabytes by 2016

(Cisco)

INTERNET VIDEO Annual traffic growth

rate of 60% 2013-2014

(Bell Labs)

OTT U.S. Internet video consumption

to grow 12x by 2020 (Bell Labs)

USERS Global Internet users to rise

from 2.2B in 2012 to 3.5B in 2020

(Analysis Mason)

2008

12

6

Exab

yte

per

mo

nth

Source: CORIANT

Advances in optical transport networks

9

400

Source: FUJITSU

Content

• Era of 100G beyond

• 400G solution

• 400G SC Field trial

Polarization division multiplexing

13

• Polarization Division Multiplexing for 100G+ signals

• Each polarization need to carry half of capaciy

Spectral Efficiency

16

10G BPSK

0,2 bit/s/Hz

50GHz

200GHz

400G DP-QPSK

2 bit/s/Hz

40G DP-QPSK

0,8 bit/s/Hz

50GHz

100G DP-QPSK

2 bit/s/Hz

50GHz

400G DP-16QAM

4 bit/s/Hz

100GHz

400G DP-256QAM

8 bit/s/Hz

50GHz

400G DP-64QAM

5,3 bit/s/Hz

75 GHz

Capacity versus OSNR Advancement Modulation

18

Source: FUJITSU

2 4 8 16 32 64

# constellation points

Tra

nsm

issio

n d

ista

nc

e

100G

CP-QPSK

300G

CP-64QAM 400G

CP-256QAM

200G

CP-16QAM

150G

CP-8QAM

Spectral efficiency

Trade-off: Spectral efficiency versus reach

Spectral efficiency

Reach

128 256

Modulation

format

long haul

regio

metro

… ITU G.694.1 12.5 GHz DWDM flex grid

Ewolution to flexible DWDM grid

21

10 G

10 G

40 G

100 G

100 G

40 G

10 G

10 G

…

ITU G.694 50 GHz DWDM fix grid

40 G

100 G

400 G

100 G

1 T

100 G

10 G

Requirements of 400G/1T/2T

commercialization Higher SE:

- higher SE than

100G

long reach:

- comparable to

100G Footprint

- similar line card size to

100G

- mature PIC & PID

Standardization -

400GE/1TE/2TE

- OTU5/FlexOTU

- client interface

- ITU-T, IEEE 802.3, OIF

Network

management

- super-channel routing

- flex reach vs capacity

Power dissipation

- more advanced CMOS

technology

- similar power consumption

as 100G

400G/1T/2T

commercialization

Content

• Era of 100G beyond

• 400G solution

• 400G SC Field trial

36

Exatel & Huawei Single Carrier

400G Field Trial

Exatel & Huawei Single Carrier

Channel 400G SC Field Trial

Page 38

Transmitter (Tx)

Receiver (Rx)

Link 1,2 or 3

400G SC Solution

1*400Gb/s

100GHz or 75GHz X Pol. Y Pol.

+

4bit/symbol

Polarization multiplexing used

Modulation format: 16QAM (4bit/symbol)

Faster Than Nyquist (FTN) Digital Signal Processing(DSP).

Soft-Decision Forward Error Coding (SD-FEC)

Quasi-Commercial components

60Gbaud 480Gb/s PDM-16QAM

C band capacity: 40*400Gb/s = 16Tb/s

Spectrum efficiency 4bit/s/Hz

Quasi commercial key components

DP-QPSK modulator(commercial) ITLA ECL laser(commercial)

Integrated coherent Rx (commercial) High speed ~90GS/s Digital-Analog Convertor (DAC) and ADC (coming soon)

We are using commercial or quasi commercial components in the field trial. Research focus on real product.

Tests Results - Spectrum

44

Signal output spectrum after transmission over Link 2.

Tests Results - BER vs booster output

Path of commercialization

2.Chip development

signal generation

Digitizing DSP

1. Research on the concept

3.Product Development

SC400G transponder!

E x a tel nework ready for

E x a bit Era

nx400G HIGHWAY

Thank you

48