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

2. © 2007 ADVA Optical Networking. All rights reserved. ADVA confidential. 2 Outline  100GbE Carrier Transport  IEEE HSSG and ITU-T SG15 Interface Focus and Status  100G Requirements and Challenges  Possible (and likely) Solutions

3. © 2007 ADVA Optical Networking. All rights reserved. ADVA confidential. 3 100GbE Carrier Transport  Transparent transport of 100GbE services  Reach and capacity extension (Mm, Tb/s)  Inline optical amplification and compensation/equalization, DWDM, advanced modulation/coding Customer Edge (CE) Provider Edge (PE) Optical Transport Network Mapping, Framing, FEC & OAM, Multiplexing 100GbE “Client I/F” “Line I/F” N x 100GbE

4. © 2007 ADVA Optical Networking. All rights reserved. ADVA confidential. 4 IEEE and ITU Interface Focus IEEE 802.3 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* Basis Focus Application Physical Media Operation Price Expectation *) 2.5x price for 4x capacity

5. © 2007 ADVA Optical Networking. All rights reserved. ADVA confidential. 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. © 2007 ADVA Optical Networking. All rights reserved. ADVA confidential. 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 ) 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. © 2007 ADVA Optical Networking. All rights reserved. ADVA confidential. 7 Likely 100G Interface Summary Data/client interfaces 10m10x 10.3Gb/s Cu AssemblySDM 100m10x 10.3Gb/s OM3 MMF850nm SDM 100m1x 103Gb/s SMF1.3µm TDM 10km4x 25.8Gb/s SMF1.3µm xWDM 40km4x 25.8Gb/s SMF1.3µm xWDM Transport/line interfaces @ 1.55µm Enterprise4x 25.8Gb/s < 200kmSMFDWDM Metro1x 111Gb/s < 600kmSMFMulti-level/carrier Core1x 111Gb/s (27.8GBd) < 2000km SMFQPSK+PolMux  100G transport will start in metro and enterprise (corporate backbone) networks  System upgrades 10G  40G  100G are required!

8. © 2007 ADVA Optical Networking. All rights reserved. ADVA confidential. 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. Thank You KGrobe@ADVAoptical.com JElbers@ADVAoptical.com MEiselt@ADVAoptical.com