Presentation Transcript
Long haul 10G Ethernet : Long haul 10G Ethernet Dark fiber tests in Denmark
Presented by Mikkel Olesen, CERN
Slide2 : Part of the IST ESTA project (Ethernet Switching at 10G and Above)
Project members
COM institute at Technical University of Denmark
CERN in Geneva
BATM in Israel
Agenda : Agenda Goals
DAREnet dark fibers in Denmark
Equipment
Lab experiments at COM/DTU
Field tests, used setup’s and results
Conclusion
Future work and use
Questions?
Goals : Goals Examine the possibility to use standard 10G Ethernet LAN equipment for long-haul WAN transmission
Using DAREnet’s 250km SMF link between Odense and Lyngby
If possible find a setup that has a BER below 1E-12 which is the 802.3ae objective
Use standard NIC’s and aggregating switch's to verify link with real Ethernet traffic
Measure the setup’s power penalty
DAREnet fiber in Denmark : DAREnet fiber in Denmark The 252 km of standard SMF dark fiber between Odense and Lyngby
Includes three points for possible amplification, filtering etc. in Nyborg, Næstved and Taastrup
Equipment : Equipment BATM T6 switch
Including 10G Uplink module developed at CERN as part of ESTA
Optillion TOP 5010-SC Xenpak transceiver
1550 nm optics with maximum reach of 40 km
Includes IEEE802.3-2000 PMD BIST capability for BER measurements
Optical amp’s and filters
COM lab setup : COM lab setup
Field tests - 1 : Field tests - 1 Setup using pre-amp at receiver
4 amp’s in total per link
3 x 80 km DCF (Dispersion Compensating Fiber)
Achieved BER andlt;1E-15 !
Limited by time shortage
BER curves : BER curves
Field tests - 2 : Field tests - 2 Setup without using pre-amp at receiver
3 amp’s in total per link
3 x 80 km DCF
Achieved BER andlt;1E-12
Shortage of time limited the experiments on this setup, BER could likely be improved
Picture - Lyngby : Picture - Lyngby Xenpak Amp’s DCF PC Filter and
attenuator
Picture – Næstved and Odense : Picture – Næstved and Odense
Conclusion : Conclusion Successfully used standard 10G Ethernet LAN equipment to transmit over 250km of SMF dark fiber (including optical amplification and DCF)
Setup meets 802.3ae objective with a BER of 1E-12, best result is below 1E-15
Transmitted full-duplex 8 Gb/s real Ethernet traffic using 16 x 1 Gb/s NIC’s and aggregating switch's
Measured setup power penalty at 1E-12 to be 2.5 dB
Conclusion – cond. : Conclusion – cond.
The successful results prove the possibility to use low-priced Ethernet LAN equipment for long-haul connections
Future work and use : Future work and use Initial tests show the possibility to extend the reach even further
Experiments could for example make use of the dark fibers continuing to Århus and Aalborg
A 10 Gb/s link between SDU in Odense and DTU in Lyngby could for example be valuable as a GRID-to-GRID connection
Questions? : Questions?
Back-to-back sensitivity measurement : Back-to-back sensitivity measurement Used to determine the power penalty for the demonstrated setup
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