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 Spring 2004 Internet2 Member Meeting, Arlington, Virginia

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

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

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 with G.652 SSMF OptiSystem Artis Optimization of input powers (EDFA, Raman) and dispersion compensation ratio

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 =

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

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

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)

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

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

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

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)

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

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, [2] Šíma, S. - Altmanová, L. - Radil, J., „Fibres and advanced optical devices for a new network strategy. “, In: TF - NGN meeting, Cambridge, [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, [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.

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!