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Figure 3: Verizon 100Gb/s transmission trial over 500 km link.
In a trial in Germany (Figure 4) dense-wavelength-
division-multiplexed(DWDM) 100Gb/s channels were
sent efficiently over long-haul fiber infrastructure
exhibiting typical field transmission characteristics.
Figure 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 downloading, data center content
delivery, etc.—are feeding continued traffic growth in
metro/core networks. Figure 5 shows actual (2008)
composition of network traffic. It illustrates that
broadband/video services (e.g. video distribution,
online video recording, YouTube, iPlayer...) already
dominate network traffic. Important future traffic
drivers will emerge from advanced applications like
telepresence and sensor networks. In other words,
we are only at the beginning of the expected
explosion in both underlying traffic and the need for
more bandwidth for sophisticated applications.
Figure 5: Actual composition of network traffic (2008)
Regardless of what the future may bring in terms of
new applications, the novel 100GbE-based transport
technology represents an important step towards
insuring the capacity and flexibility will be there to
accommodate overall traffic growth requirements.
The proof can already be seen in the pioneering
results on advanced 100Gb/s serial transmission
achieved by Bell Labs. This include records in high
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.Veith@alcatel-lucent.com
Sebastien.Bigo@alcatel-lucent.com
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%
2%
11%
4%
2008
31%
Private Line
s
Voice
Video Distribution
BB Internet /SME Access
BB/Video
Live HDTV Video
Transmission over a
100Gb/s optical channel
on Verizon 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