Internet 3 Optimizing Optical Networks with Multi-Haul Networks

1. Internet 3Optimizing Optical Networks with Multi-Haul Networks December 7th, 2006 Roy Bowcutt Roy Bowcutt

2. Outline • Traditional WDM systems and real networks • Technology applied in real networks • Optimizing networks with multi-haul designs • Intelligent Integration using an intelligent control plane

3. Traditional Network Segmentation • Networking Solutions Optimized for Each Segment (Access, Metro, Regional, and Long Haul) • Technologies Targeted for One or Two Networking Segments • Network Management Systems, Provisioning Operations, and Organizational Structures built around Segmented Networks

4. WDM Network Categories Long Haul Regional Metropolitan Access Cost Capacity Distance >800 km <800 km +80 l 10G +40 l 40G <400 km 40 l 10G (2.5G) <100 km $$$$$ 20 l 10G + 2.5G $$$ <8 l 2.5G $$ $ Increased Network Cost WDM systems are typically optimized for a given application

5. Long Haul Regional Metro Access WDM Network Segmentation Management Systems and Organizational Structures Developed and Organized for Networking Segments

6. 2 2 4 3 9 Many Networks do not fall in any single category 4 2 5 4 4 3 4 4 5 5 6 7 7 9 7 6 6 7 8 6 5 8 Increased Network Cost 7 6 10 8 11 12 11 7 8 To North Rings Real Networks • New Jersey – Maryland Network • In-service 2003 • 88 Network Elements • Supports 40 l per fiber • 10G & 2.5G The number of channels (10G and 2.5G) on each optical span at initial turn-up is indicated by the number that is circled. To South Rings

7. 2.5G CWDM EAML 2.5G 40G DML 2.5G MZ-EML 10G EAML 10G No Amp Hybrid Raman/EDFA EDFA Raman Dual Stage EDFA 8l 20l 80l Terminal Node 40l OADM ROADM Multi-Degree ROADM Technology Application Segmentation

8. Modular WDM - Amplifiers (r)OADM Pre-amp Post-amp DCM Rx/Tx DCM Amplifier options • No amplifier • Single-pump EDFA • Dual-pump EDFA • Dual-pump EDFA with mid-stage access • Variable Gain EDFA • Distributed Raman • Hybrid Raman+EDFA

9. Modular WDM - Transponders (r)OADM Pre-amp Post-amp Rx/Tx DCM DCM Transponder options • External ITU-T l, any rate • CWDM 2.5G • DML DWDM 2.5G • EAML 2.5G • MZI 2.5G • EAML 2.5G FEC • EAML 10G FEC • MZI 10G FEC & duobinary

10. Modular WDM – (r)OADM (r)OADM Pre-amp Post-amp DCM Rx/Tx DCM OADM options • None (line-amp node) • 4 l and 8 l CWDM mux/demux • single-l DWDM filters • 20 l mux/demux • 40 l mux/demux • broadcast-and-select (2-degree) ROADM • multi-degree ROADM

11. EDFA Power Ripple • 6 spans x 100 km SMF 9 EDFA + 4 OADM • Low power ripple – no need for channel equalizer Input to first post-amp Output of last pre-amp < 5 dB power ripple

12. 1535 nm 16 loops 1541 nm 16 loops ROADM for Power Equalization • Recirculating loop with 2-deg. ROADM • <5 dB power ripple after 16 ROADM • Open eye diagrams for 10G EAML 0 loops 16 loops

13. Long-Haul All-Optical Transmission • Field trial 10 spans x 160 km SMF with no OEO regen • EAML, NRZ 10G XPDR’s with hybrid Raman/EDFA • No per-wavelength power equalization along the link EFEC BER threshold Error Free with EFEC turned ON

14. Service providers Support multiple WDM platforms High Op.Ex. Multi-haul WDM System Use modular WDM system adapting to all networks requirements • Protocols • Data rates • Number of channels • Span distances • Total distances • Fiber types • Add/drop capacity and reconfigurability • Protection options

15. 2.5G DML 10G MZI R R 2.5G EAML >1000 km 10G EAML R 40G CWDM Multi-deg. ROADM Raman 1-stage EDFA 2-deg. ROADM 2-stage EDFA Hybrid Raman/EDFA R R OADM Multi-haul WDM Network

16. Fixed OADM 2-degree ROADM Multi-deg. ROADM Mixed (r)OADM Network Cost Comparison

17. R R R Tying Network Tools Together 2.5G DML 10G MZI 2.5G EAML >1000 km 10G EAML 40G CWDM • Provisioning Simplification • Network utilization • Multiple provisioning systems • Automatic network inventory (discovery) • Embedded service awareness

18. Metro Core Expedited Provisioning Network Evolution Network Efficiency Point and click provisioning Network agility Enhanced revenue capability Integrated management Interoperability New types of services New architectural and operations models Higher asset utilizationAutomated network inventory and reuseEfficient restoration Metro Access Metro Edge Customers Intelligent Control Plane Reduces Operational Expenditures andIncreases Service Delivery

19. Summary – Multi-haul DWDM • Mix different XPDRs, Amplifiers, OADMs, etc on the same optical path • Use the lowest-cost (but still reliable) alternative to meet network requirements • Cost and performance optimization performed with automated control plane technology

20. Thank You! rbowcutt@advaoptical.com info@advaoptical.com

21. About the Author Roy Bowcutt is Senior Director of Product Management at ADVA Optical Networking. of Product Management at Movaz Networks.  Roy is experienced in the engineering and market development of telecommunications, cable video transmission, and data networking industries.  Prior to ADVA, Roy was the Vice President of Product Management at Movaz Networks. Prior to joining Movaz, he worked in various engineering and management positions at Scientific Atlanta and IBM. Roy holds a BS in Electrical and Computer Engineering from Brigham Young University, a Masters in Electrical Engineering from the University of Minnesota, and an MBA from Emory University.