Live HDTV Video
Transmission over a
100Gb/s optical channel on Verizon national video
service network
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.
Darmstadt | Ladenburg | Karlsruhe | Stuttga |
8x107G TX | L = 95.0 km | L = 79,7 km | L = 75,4 km | |
| | | | |
Nx100G over 500 km DTAG field fiber link
107G RX
Opt.
PMDC
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.
BB/Video | 2% | | Private Lines |
| | |
11% | 25% | | Voice |
| | Video Distribution |
| | |
31% 2008 | 4% | |
| 27% | BB Internet/Residential Access |
| | | BB Internet /SME Access |
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'applicationsophistiquées et riches en contenus. Les systèmes 100 GbE constitueront l'infrastructure dominante de prochaine générationqui sera déployée pour faire face à cet accroissement. Les hercheurs 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 dela technologie 100 GbE. Grâce à ces compétences, ils p ermettent aux opérateurs de se préparer efficacement afin de rester réactif, quelle que soit l'évolution future du haut débit.
