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NTT Communications' Perspective on Next GEN

Optical Transport Network

Hisayoshi Yoshida NTT Communication Corporation

hisayoshi.yoshida@ntt.com

OFC2014 Market Watch

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0

20,000

40,000

60,000

80,000

100,000

120,000

140,000

2012 2013 2014 2015 2016 2017 2018

Traffic Trend The rapid traffic growth still continues.

Especially, Mobile traffic increases more and more according as wireless technology evolution.

Traf

fic [

PB/m

onth

]

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“High Speed, Large Capacity” & “Quickness, Flexibility”

Packet Multiplexing

Large Capacity （100G+）

Quickness

End-to-End resource control

Time to Market

Flexible design for service infrastructure

Next Gen PTN/Optical SDN/NFV

Suitable domain for Hardware processing

Suitable domain for Software processing

Demands for Network

OAM Simple Architecture

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DWDM Deployment History Tr

ansm

issi

on C

apac

ity

Ove

r a

Sin

gle

Fibe

r [b

ps]

2000 2005 2010 2015 2020

10G

100G

1T

10T

100T

10Gx80ch

100Gx80ch 40Gx40ch RZ-DQPSK

2.4Gx48ch 40Gx40ch

OXC DP-QPSK

400G? 1T?

2.4Gbps/ch 10Gbps/ch

40Gbps/ch 100Gbps/ch

Year

Today

Liner(P to P)

Mesh

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WDM/OXC

Edge Edge

Service Edge Edge

Unified Backbone

(1) Network Integration -Service network and Transport network -Wavelength layer and Transmission layer (2) Packet transferring optimization -Better efficiency by packet multiplex (3) Broad bandwidth -100Gbps (4) Better reliability and operability -Network (Node) integration -3 routes -CDC function (5) Global Seamless -Same architecture in domestic and global

PTN and Optical Networks

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NTT Com’s Domestic Core Network

Tr OXC Tr Tr

LSP Protection (Hitless protection)

Optical Path Restoration

Packet Transport

CDC Function

SDH Multiplexing Packet Multiplexing Fiber: DSF (ITU-T G. 653) Margin : Maintenance margin: 2.5dB Instantaneous loss variation : 1.0dB etc… Laser Security : less than 500mW

Change route of wavelength by Remote operation. Reduction of On-site operation Quick Recovery from Disaster

Tokyo-Osaka：about 700km

OXC (Multi-degree ROADM)

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Elemental technologies for 400G

Channel Spacing

Fiber Cable

40G 100G 400G

Flexible Grid Fix (50GHz) Flex (12.5GHz x N)

DSF/SMF Low Loss fiber (SMF/DSF?)

Mod. Format

Digital Coherent

DP-QPSK

Single channel

RZ-DQPSK DP-QPSK or 16QAM

SuperChannel / Pulse Shaping

Direct Detection

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DSF vs SMF

DSF (G.653)

SMF (G.652)

Zero Dispersion wavelength: 1.5um Signal Wavelength: L-band Low Chromatic Dispersion Nonlinear Effect (4WM,SPM) Affective

Zero Dispersion wavelength 1.3um Signal Wavelength: C-band High Chromatic Dispersion Nonlinear Effect less-affective

Launch Power is limited. (e.g. -1dBm/ch) High Raman gain

High Launch Power Low Raman gain

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Upgrade to 400G/1Tbps

MUX/DMUX

AMP

100G TRPN Add 400G TRPN

Add 1T TRPN

MUX/DMUX

AMP

100G TRPN Add 400G TRPN Add 1T TRPN

100G

400G

(1) PKG Add (Preferable) 1T

100G SLTE

400G / 1T SLTE

100G

400G 1T

(2) SLTE Replace AVOID channel fragmentation

Replace

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Power Efficiency of Transmission System

Pow

er C

onsu

mpt

ion

/ 1

0G

bp

s

Pow

er C

onsu

mpt

ion

/ R

ack

Normalized

Normalized

0

10

20

30

40

50

60

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

2.4G x 46 10G x 80 40G x 40 100G x 80 400G x N? 1T x M?

Expectation of drastic innovation on cooling technology

2.4Gx48 10Gx80 40Gx40 100Gx80 400G? 1T?

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Next Gen PTN/Optical

SDN Common Platform

SDN Controller

Protocol conversion

Orchestrate end-end resources over multi-layers

API OpenFlow SW

PTN/ OXC

PTN/ OXC

PTN/ OXC

PTN/ OXC

PTN/ OXC

Service NW

DC GW

Cloud/Virtualized DC

DC GW

DC GW

SDN Controller to look after entire NW

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NTT Com’s SDN Controller Architecture

SDN Common Framework

OFC CLI API

OpenFlow Switch

Appliance etc.

Optical etc.

EMS etc.

NW APP (intra-

DC)

NW APP (inter-

DC)

API

Abstraction

Common Framework

NW Application

Driver (plug-in)

NW APP (Third Party)

API

Forwarding

NW APP (Open Source)

Applications to add functionality

Common framework North/South bound APIs

Standard Interface

Applicable device deployment

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Next Gen PTN and SDN - Key for Success

Shorten time-to-market No special hardware / Easy to deploy

Independent of Vendor’s development schedule

Service differentiation Programmability / More flexibility Easy to create new service CAPEX / OPEX reduction Simple structure / Commoditized device Centralized & automated operation

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