1. 100GbE Transport Requirements
Klaus Grobe, Jörg-Peter Elbers, Michael Eiselt
Internet2 Meeting, October 10th, 2007

2. Outline 100GbE Carrier Transport
IEEE HSSG and ITU-T SG15 Interface Focus and Status
100G Requirements and Challenges
Possible (and likely) Solutions

3. Optical Transport Network
100GbE Carrier Transport
Provider
Edge (PE)
Customer
Edge (CE)
Optical Transport Network
100GbE
N x 100GbE
“Client I/F”
“Line I/F”
Mapping,
Framing,
FEC & OAM,
Multiplexing
Transparent transport of 100GbE services
Reach and capacity extension (Mm, Tb/s)
Inline optical amplification and compensation/equalization, DWDM, advanced modulation/coding

4. IEEE and ITU Interface Focus
Basis
Focus
Application
Physical Media
Operation
Price Expectation
IEEE HSSG
“Client interface”
802.3 Standard
Data equipment
LAN/Short Reach
Copper, SMF, MMF
1 x 100G (grey)
2 x 10GbE
ITU-T SG15
“Line interface”
G.709 Standard
Transport equipment
WAN/Long Reach
SMF
N x 100G (amplified DWDM)
6.25 x OTU-2*
*) 2.5x price for 4x capacity

5. 100GbE Transport Requirements
Support of metro and (regional/LH) core DWDM applications
Compatibility to today’s fiber infrastructure
Compatibility to 50GHz channel grid (core)
Compatibility to 100GHz channel grid (metro)
≥ 2x increase in spectral efficiency compared to 40Gb/s (core)
> 2x increase in spectral efficiency compared to 10Gb/s (metro)
100GbE must consider / be considered by OTH OTU4

6. 100GbE Transport Challenges
For same reach and modulation format as 10Gb/s
10dB OSNR penalty
100x higher impact of GVD
10x higher impact of PMD
More degradations by fiber nonlinearity
Incompatibility to optical filters and channel grid
Serial transmission (100GbE per l) expected to win on long term
Needs advanced modulation, FEC, electronic signal processing
Likely different interface variants for metro and core
Industry consensus on formats highly desirable
Noise Limit
Non-linear Limit
Launched Channel Power [a.u.]
Number of Spans [a.u.]

7. Likely 100G Interface Summary
Data/client interfaces
10m 10x 10.3Gb/s
Cu Assembly SDM
100m 10x 10.3Gb/s
OM3 MMF 850nm SDM
100m 1x 103Gb/s
SMF 1.3µm TDM
10km 4x 25.8Gb/s
SMF 1.3µm xWDM
40km 4x 25.8Gb/s
Transport/line 1.55µm
Enterprise 4x 25.8Gb/s
< 200km SMF DWDM
Metro 1x 111Gb/s
< 600km SMF Multi-level/carrier
Core 1x 111Gb/s (27.8GBd)
< 2000km SMF QPSK+PolMux
100G transport will start in metro and enterprise (corporate backbone) networks
System upgrades 10G  40G  100G are required!

8. Summary Single-wavelength transport necessary for spectral efficiency
ITU-T G.709-compliant framing mandatory
Support upgrades of 10G/40G installations
Different solutions for different distance domains
Focus on highly tolerant, cost effective realizations

9. KGrobe@ADVAoptical.com JElbers@ADVAoptical.com MEiselt@ADVAoptical.com
Thank You