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Experiments with 10 GE long-haul transmissions in academic and research net works

This presentation discusses the innovative experiments conducted with 10 Gbps long-haul transmissions within academic and research networks. Key motivations for extending span lengths, numerical simulations performed, and practical results obtained over various distances are outlined. The findings support the benefits of the Nothing-in-line (NIL) approach, which avoids the issues associated with in-line amplifiers. Results include successful transmissions of combined GE channels over 202 km and 252 km, showcasing the efficacy of high-power EDFA boosters and Raman pumps, paving the way for cost-effective and reliable high-speed networking.

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Experiments with 10 GE long-haul transmissions in academic and research net works

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

  2. Experiments with 10 GE long-haul transmissions in academic and research networksOutline • Motivation for extending the span length • Numerical simulations • Practical results • Conclusions Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  3. Experiments with 10 GE long-haul transmissions in academic and research networksMotivations • 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 Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  4. Experiments with 10 GE long-haul transmissions in academic and research networksNumerical 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 Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  5. Experiments with 10 GE long-haul transmissions in academic and research networksPractical 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 Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  6. Experiments with 10 GE long-haul transmissions in academic and research networksPractical results – 4 WDM channels • 2 x 1 GE plus 2 x 10 GE over 202 km Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  7. Experiments with 10 GE long-haul transmissions in academic and research networksPractical results – 2 WDM channels • 2 x 10 GE over 252 km Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  8. Experiments with 10 GE long-haul transmissions in academic and research networksPractical 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) Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  9. Experiments with 10 GE long-haul transmissions in academic and research networksPractical results – the map of Czech republic • Corrected diameters • CzechLight experimental network Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  10. Experiments with 10 GE long-haul transmissions in academic and research networksPractical results – the map of Netherlands • Air distances • AFDR can be different Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  11. Experiments with 10 GE long-haul transmissions in academic and research networksPractical results – the map of Virginia • Air distances Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  12. Experiments with 10 GE long-haul transmissions in academic and research networksConclusions • 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) Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  13. Experiments with 10 GE long-haul transmissions in academic and research networksAcknowledgements • Many thanks to Lada Altmanová, Stanislav Šíma and Josef Vojtěch from CESNET Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  14. Experiments with 10 GE long-haul transmissions in academic and research networksReferences • [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. Spring 2004 Internet2 Member Meeting, Arlington, Virginia

  15. Experiments with 10 GE long-haul transmissions in academic and research networksThank you for your attention! Spring 2004 Internet2 Member Meeting, Arlington, Virginia

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