1. April 19-21, 2004 Internet 2 member meeting, Arlington, Virginia1 Experiments with 10 GE long-haul transmissions in academic and research networks Jan Radil Miroslav Karásek www.cesnet.cz Spring 2004 Internet2 Member Meeting, Arlington, Virginia

2. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia2 Experiments with 10 GE long-haul transmissions in academic and research networks Outline Motivation for extending the span length Numerical simulations Practical results Conclusions

3. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia3 Experiments with 10 GE long-haul transmissions in academic and research networks Motivations Nothing-in-line (NIL) approach Drawback and problems with in-line amplifiers (EFDAs, Raman) Electric power supplies Increase the probability of network breakdown Regular maintenance in remote sites 1 GE and 10 GE everywhere

4. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia4 Experiments with 10 GE long-haul transmissions in academic and research networks Numerical simulations To estimate the maximum span length @10Gbit/s with G.652 SSMF OptiSystem Artis Optimization of input powers (EDFA, Raman) and dispersion compensation ratio

5. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia5 Experiments with 10 GE long-haul transmissions in academic and research networks Practical results 2 x 1 GE plus 2 x 10 GE over 202 km 2 x 10 GE over 252 km High power EDFA boosters Low noise EDFA pramplifiers High power Raman pump lasers Dispersion compensating fibres Splitters, optical tunable filters (no DWDM equipment) BER = 10 -13

6. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia6 Experiments with 10 GE long-haul transmissions in academic and research networks Practical results – 4 WDM channels 2 x 1 GE plus 2 x 10 GE over 202 km

7. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia7 Experiments with 10 GE long-haul transmissions in academic and research networks Practical results – 2 WDM channels 2 x 10 GE over 252 km

8. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia8 Experiments with 10 GE long-haul transmissions in academic and research networks Practical results – the map of Czech republic Air distances Corrections needed Air to fibre distance ratio – AFDR AFDR = 0,65 (worst case for Praha-Brno fibre: 190 km/290 km)

9. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia9 Experiments with 10 GE long-haul transmissions in academic and research networks Practical results – the map of Czech republic Corrected diameters CzechLight experimental network

10. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia10 Experiments with 10 GE long-haul transmissions in academic and research networks Practical results – the map of Netherlands Air distances AFDR can be different

11. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia11 Experiments with 10 GE long-haul transmissions in academic and research networks Practical results – the map of Virginia Air distances

12. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia12 Experiments with 10 GE long-haul transmissions in academic and research networks Conclusions WDM 10 GE long haul NIL transmissions (easy to deploy with dark fibres, cost-effective) For experimental networks (CzechLight) Bandwidth on demand (real lightpaths) for clusters/grid users Optical services to new end users (high-speed, few-to-few)

13. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia13 Experiments with 10 GE long-haul transmissions in academic and research networks Acknowledgements Many thanks to Lada Altmanová, Stanislav Šíma and Josef Vojtěch from CESNET

14. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia14 Experiments with 10 GE long-haul transmissions in academic and research networks References [1] Karásek, M. - Radil, J. - Boháč, L., „Optimization of NRZ data transmission at 10 Gbit/s over G.652 without in-line EDFA’s “, In: Fiber and Integrated Optics, tbp, 2004. [2] Šíma, S. - Altmanová, L. - Radil, J., „Fibres and advanced optical devices for a new network strategy. “, In: TF - NGN meeting, Cambridge, 2003. [3] Karásek, M. - Peterka, P. - Radil, J., „202 km repeaterless transmission of 2 x 10 GE plus 2 x 1 GE channels over standard single mode fibre “, In: Optics Communications, tbp, 2004. [4] Karásek, M. - Peterka, P. - Radil, J., „Repeaterless Transmission of 2 x 10 GE Channels over 252 km of Standard Single Mode Fibre without in-line EDFA “, In: IEEE J. on Selected Areas in Communications, sfp, 2004.

15. April 19-21, 2004 Spring 2004 Internet2 Member Meeting, Arlington, Virginia15 Experiments with 10 GE long-haul transmissions in academic and research networks Thank you for your attention!