April 19-21, 2004 Internet 2 member meeting,

Arlington, Virginia 1

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

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 2

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

Outline

Motivation for extending the span lengthNumerical simulations Practical results Conclusions

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 3

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

Motivations

Nothing-in-line (NIL) approachDrawback and problems with in-line amplifiers (EFDAs, Raman)Electric power supplies Increase the probability of network breakdown Regular maintenance in remote sites1 GE and 10 GE everywhere

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 4

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 SSMFOptiSystemArtisOptimization of input powers (EDFA, Raman) and dispersion compensation ratio

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 5

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 kmHigh power EDFA boostersLow noise EDFA pramplifiersHigh power Raman pump lasersDispersion compensating fibresSplitters, optical tunable filters (no DWDM equipment)BER = 10-13

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 6

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, Virginia 7

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, Virginia 8

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

Practical results – the map of Czech republic

Air distancesCorrections neededAir to fibre distance ratio – AFDRAFDR = 0,65 (worst case for Praha-Brno fibre: 190 km/290 km)

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 9

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

Practical results – the map of Czech republic

Corrected diametersCzechLight experimental network

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 10

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

Practical results – the map of Netherlands

Air distancesAFDR can be different

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 11

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, Virginia 12

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 usersOptical services to new end users (high-speed, few-to-few)

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 13

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, Virginia 14

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.

April 19-21, 2004 Spring 2004 Internet2 Member

Meeting, Arlington, Virginia 15

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

Thank you for your attention!