Alcatel-Lucent 100 GbE User Manual
100 Gigabit Ethernet (100 GbE)
Advanced Serial 100Gb/s Transmission Technology for Next Generation Optical Transport Networks
Modern telecommunication networks need to be built with enormous traffic growth in mind. For example, today some internet exchange nodes have annual growth 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 global explosion in traffic (Figure 1) can only be assured by implementation of the most advanced high capacity optical metro/core transport network technologies. Soon networks based on next generation 40/100 Gigabit Ethernet (GbE) transport technologies will predominate. They will be based on standards currently under preparation by several standards organisations (e.g. IEEE,
40/100GbE will be
technology in next
Figure 1: Technology roadmap of optical transport networks. 40/100GbE will be dominant technology within the next decade.
polarization mode dispersion (PMD), must be compensated or mitigated efficiently.
∙Spectral efficiency must increase, enabling 100Gb/s transmissions over exsiting 10/40G DWDM systems (50/100GHz channel spacing).
∙Complex integrated circuits for digital signal processing (DSP) and new very
Dispersion tolerant serial Nx100Gb/s DWDM transmission with high spectral efficiency
Figure 2 is a schematic of how high capacity Nx100Gb/s optical transmission is feasible over longhaul fiber links without dispersion compensation units (DCU) using conventional 10Gb/s DWDM platforms with narrow channel spacing (50GHz) corresponding to a spectral efficiency of 2bit/s/Hz.
Fiber (dispersion, PMD)
Polarization Division Multiplexed
Quadrature Phase Shift Keying
Figure 2: Nx100Gb/s Coherent
To get from here to there, several challenges associated with development and operation of ultrahigh speed components and systems for serial 100 Gbit/s optical transmission must be overcome:
∙Stronger transmission signal impairments associated with the upgrade of data rates, due to chromatic dispersion (CD) and
Verizon 100G field trial with live traffic
Live HDTV Video Transmission over a 100Gb/s optical channel on Verizon national video
Figure 3: Verizon 100Gb/s transmission trial over 500 km link.
In a trial in Germany (Figure 4)
L = 95.0 km
L = 79,7 km
L = 75,4 km
Nx100G over 500 km DTAG field fiber link
Figure 4: 8x100Gb/s
A number of new broadband
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
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
BENEFIT: Bell Lab’s expertise in 100Gb/s assures that operators are ready for the coming explosion in
Optical Networks Domain
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
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.