Alcatel-Lucent 100 GbE Manuel utilisateur

Alcatel-Lucent Innovation Days – December 2008

Context

Modern telecommunication networks need to be built

with enormous traffic rowth in mind. For example,

today some internet exchan e nodes have annual

rowth rates of more than 200% due to dramatic

increases in users coupled with the needs of enriched

data and broadband video services.

Accommodation of the lobal explosion in traffic

(Fi ure 1) can only be assured by implementation of

the most advanced hi h capacity optical metro/core

transport network technolo ies. Soon networks based

on next eneration 40/100 Gi abit Ethernet (GbE)

transport technolo ies will predominate. They will be

based on standards currently under preparation by

several standards or anisations (e. . IEEE, ITU-T).

Fi ure 1: Technolo y roadmap of optical transport networks.

40/100GbE will be dominant technolo y within the next decade.

Alcatel-Lucent’s concepts and real-time trials

demonstrate 100Gbe’s raceful introduction and

evolution to meet operators’ future needs.

Challenges

To et from here to there, several challen es

associated with development and operation of ultra-

hi h speed components and systems for serial 100

Gbit/s optical transmission must be overcome:

•Stron er transmission si nal impairments

associated with the up rade of data rates,

due to chromatic dispersion (CD) and

polarization mode dispersion (PMD), must be

compensated or miti ated efficiently.

•Spectral efficiency must increase, enablin

100Gb/s transmissions over exsitin 10/40G

DWDM systems (50/100GHz channel spacin ).

•Complex inte rated circuits for di ital si nal

processin (DSP) and new very hi h-speed

components have to be developed usin

state-of-the-art electronics and photonics.

Innovation

Alcatel-Lucent has developed 100 Gbe concepts,

shown prototypes and done field trials demonstratin

its expertise in addressin future requirements.

Dispersion tolerant serial Nx100Gb/s DWDM

transmission with high spectral efficiency

Fi ure 2 is a schematic of how hi h capacity

Nx100Gb/s optical transmission is feasible over lon -

haul fiber links without dispersion compensation units

(DCU) usin conventional 10Gb/s DWDM platforms

with narrow channel spacin (50GHz) correspondin

to a spectral efficiency of 2bit/s/Hz.

Fi ure 2: Nx100Gb/s Coherent PDM-QPSK DWDM transmission over

1200km laboratory fibre link.

erizon 100G field trial with live traffic

Alcatel-Lucent, in a real-time field trial with Verizon

(Fi ure 3), proved a 100Gb/s channel carryin a HDTV

video si nal can transmit parallel to existin live

traffic 10Gb/s DWDM channels.

10Mb/s

10Gb/s

1Gb/s

100Mb/s

100Gb/s

THE

ETHERNET

EVOLUTION

ROADMAP

(LAN/WAN)

100GbE

10GbE

1GbE

100MbE

10MbE

40GbE

DAT

RAT

2000 2010

1990 YEAR

40/100GbE will be

dominant transport

technology in next

generation optical

metro/core networks

A.O.

SSMF

Tunable

filter

A.O.

100km

SSMF

100G

Coherent

WSS

Optium

2x28Gbit/s

M wavelen ths

QPSK

2x28Gbit/s Nx112Gbit/s

Switch

Fiber (dispersion, PMD)

A.O.

SSMF

Tunable

filter

A.O.

100km

SSMF

100G

Coherent

WSS

Optium

2x28Gbit/s

M wavelen ths

QPSK

2x28Gbit/s Nx112Gbit/s

Switch

Fiber (dispersion, PMD)

Polarization Division Multiplexed

Quadrature Phase Shift Keyin

Transmitter

100 Gigabit Ethernet (100 GbE)

Advanced Serial 100Gb/s Transmission Technology for Next Generation

Optical Transport Networks

Fi ure 3: Verizon 100Gb/s transmission trial over 500 km link.

In a trial in Germany (Fi ure 4) dense-wavelen th-

division-multiplexed(DWDM) 100Gb/s channels were

sent efficiently over lon -haul fiber infrastructure

exhibitin typical field transmission characteristics.

Fi ure 4: 8x100Gb/s NRZ-VSB DWDM transmission over 500km

installed field fiber with typical field transmission characteristics.

Scenario

A number of new broadband applications—HDTV

distribution, video downloadin , data center content

delivery, etc.—are feedin continued traffic rowth in

metro/core networks. Fi ure 5 shows actual (2008)

composition of network traffic. It illustrates that

broadband/video services (e. . video distribution,

online video recordin , YouTube, iPlayer...) already

dominate network traffic. Important future traffic

drivers will emer e from advanced applications like

telepresence and sensor networks. In other words,

we are only at the be innin of the expected

explosion in both underlyin traffic and the need for

more bandwidth for sophisticated applications.

Fi ure 5: Actual composition of network traffic (2008)

Re ardless of what the future may brin in terms of

new applications, the novel 100GbE-based transport

technolo y represents an important step towards

insurin the capacity and flexibility will be there to

accommodate overall traffic rowth requirements.

The proof can already be seen in the pioneerin

results on advanced 100Gb/s serial transmission

achieved by Bell Labs. This include records in hi h

capacity and spectral efficiency of Nx100Gb/s DWDM

transmission, and first real-time 100Gb/s field

transmission trials with live traffic.

BENEFIT:

Bell Lab’s expertise in 100Gb/s assures

that operators are ready for the coming explosion in

bandwidth-hungry applications and services.

Contact:

Gustav. [email protected]

Sebastien.B[email protected]

winzer@alcatel-lucent.com

Optical Networks Domain

Alcatel-Lucent Bell Labs

Résumé:

Nous sommes à la veille d'une explosion des besoins en bande

passante, du fait de l'augmentation au niveau mondial du nombre

d'utilisateurs et du développement d'applications sophistiquées et

riches en contenus. Les systèmes 100 GbE constitueront

l'infrastructure dominante de prochaine génération qui sera

déployée pour faire face à cet accroissement. Les chercheurs

d’Alcatel-Lucent Bell Labs ont mis au point des concepts et réalisé

des essais en temps réel sur le terrain qui démontrent qu'ils

disposent de solides compétences dans le domaine de la

technologie 100 GbE. Grâce à ces compétences, ils permettent aux

opérateurs de se préparer efficacement afin de rester réactif, quelle

que soit l'évolution future du haut débit.

BB Internet/Residential Access

25%

27%

11%

2008

31%

Private Line

oice

ideo Distribution

BB Internet /SME Access

BB/ ideo

Live HDT ideo

Transmission over a

100Gb/s optical channel

on erizon national video

service network

Darmstadt Ladenburg

Karlsruhe

8x107G TX

107G RX

Stuttgart

Opt.

PMDC

L = 79,7 km

L = 95.0 km

L = 75,4 km

Nx100G over 500 km DTAG field fiber link

Alcatel-Lucent Innovation Days – December 2008

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