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Extending the reach of 10 GE at 1310 nm

Extending the reach of 10 GE at 1310 nm. Josef VOJTĚCH , Miroslav KARÁSEK , Jan R ADIL Motivation Configuration of tests Test results Conclusions. Extending the reach of 10 GE at 1310 nm Motivation.

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Extending the reach of 10 GE at 1310 nm

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  1. Extending the reach of 10 GE at 1310 nm Josef VOJTĚCH, Miroslav KARÁSEK, Jan RADIL • Motivation • Configuration of tests • Test results • Conclusions ICTON 2005, Barcelona, Spain

  2. Extending the reach of 10 GE at 1310 nmMotivation • Development of high-speed customer empowered fibre networks and availability of 10 GE LAN cards with 1310 nm transceivers stimulates the • Need for interconnection of stand-alone or hardware accelerated PCs at 10 Gbit/s rate • Advantage – zero chromatic dispersion of standard single mode fibres (SSMF) at 1310 nm in, the 1310 nm transceivers are much cheaper than the 1550 nm ones • Disadvantage – loss of SSMF at 1310 nm is almost twice as high as at 1550 nm ICTON 2005, Barcelona, Spain

  3. Extending the reach of 10 GE at 1310 nmfibre amplifiers available at 1310 nm • Praseodymium-doped fluoride fibre amplifiers (limited number of manufacturers, low saturated output power in comparison with EDFA, FiberLabs, FL8610-OB, Psat=16dBm, NF=5.5dB) • Distributed amplification in the transmission fibre utilizing stimulated Raman scattering (Raman fibre amplifier (RFA), no pump LDs at 1250 nm, Raman fibre laser, IPG, Poutmax =2 W at 1250nm) • Semiconductor optical amplifiers (InPhenix, IPSAD1301, Psat=10dBm, NF=7.5dB) ICTON 2005, Barcelona, Spain

  4. Extending the reach of 10 GE at 1310 nm PDFFA characteristics ICTON 2005, Barcelona, Spain

  5. Extending the reach of 10 GE at 1310 nm • Modularity of SSMF spools available was 5, 10, 25, and 50 km • Reliability of 10 GE transmission was verified using PING utility • 107 of 1500 bytes long packets were transmitted and the number of successfully received packets was monitored • The transmission was regarded to be successful when more than 99.95% of launched packets was received ICTON 2005, Barcelona, Spain

  6. PDFA PDFA PDFA/SOA PDFA PDFA PDFA/SOA TX TX TX TX RX RX RX RX Extending the reach of 10 GE at 1310 nmTest setup I Booster amplifier (BA) Preamplifier (PA) BA + PA BA + in-line amplifier (IA) ICTON 2005, Barcelona, Spain

  7. RFA PDFA PDFA RFA PDFA PDFA PDFA RFA PDFA TX TX TX RX RX RX Extending the reach of 10 GE at 1310 nmTest setup II BA + PA+ RFA Two-stage BA + RFA BA+ IA + RFA ICTON 2005, Barcelona, Spain

  8. Extending the reach of 10 GE at 1310 nm10 GE transceiver XENPACK 10GBASE-LR • Transceiver reach – nominal 10 km SSMF - laboratory verified 32 km SSMF • TX PTx out= -1,9 dBm λ = 1304,3 nm • RX back-to-back sensitivity -17 dBm TX output spectrum and eye diagram ICTON 2005, Barcelona, Spain

  9. Extending the reach of 10 GE at 1310 nmPDFFA booster configuration • Maximum span length 85 km of SSMF, loss α = 31,5 dB • PBo out= 14,4 dBm • PRx in = -18,1 , OSNR = 42 dB Launched into the SSMF RX input power ICTON 2005, Barcelona, Spain

  10. Extending the reach of 10 GE at 1310 nmPDFFA as preamplifier • Maximum spanlength 70 km, α=25.2 dB, OSNR=24 dB • PPA in= -27.1 dBm, PPA out= -2.4 dBm • Span length with OBPF 75 km, α=27 dB, OSNR=23 dB • PPA in= -28,9 dBm, FWHMof the OBPF 0.8 nm After PDFFA without OBPF After PDFFA with an OBPF ICTON 2005, Barcelona, Spain

  11. Extending the reach of 10 GE at 1310 nmPDFFA booster plus PDFFA preamplifier • Maximum span length 100 km, α=37.2 dB, OSNR=28 dB • PPA in= -22.8 dBm PPA out= -3.7 dBm • with OBPF, span length 120 km, α= 43.6 dB, OSNR=23 dB • PPA in= -29.2 dBm PPa out= -6 dBm At the RX without OBPF At the RX with an OBPF ICTON 2005, Barcelona, Spain

  12. Extending the reach of 10 GE at 1310 nmPDFFA booster plus PDFFA preamplifier Eye diagram after PA (100 km) Eye diagram after PA (120 km) Eye diagram after PA and OBPF (120 km) ICTON 2005, Barcelona, Spain

  13. Extending the reach of 10 GE at 1310 nmPDFFA booster and PDFF in-line • Span length 100+60 km, loss 37,2+19,2 dB • PIn in= -22,8 dBm, PIn out= 0,7 dBm, PRx= -17,6 dBm • OSNR 29,4 dB Za in-line zelilovačem Před přijímačem ICTON 2005, Barcelona, Spain

  14. Span length 135 km SSMF, loss = 54,1 dB PBo out= 14,5 dBm, PRFA= 1,3 W PRx in = -13,6, OSNR = 28,4 dB Extending the reach of 10 GE at 1310 nm10 GE two-stage booster a RFA Za boostery Za filtrem Za RFA, bez filtru Před přijímačem ICTON 2005, Barcelona, Spain

  15. Extending the reach of 10 GE at 1310 nm10 GEbooster, in-line and RFA • Span length 100+100 km SSMF,loss 37,2+38 dB • PBo out= 12,1 dBm, PRFA= 1,35 W • PRx= -16 dBm, OSNR 24 dB Za RFA, bez filtru ICTON 2005, Barcelona, Spain

  16. Application # 10GE reach[km] No amplification 30 1 Bo 85 (60 SOA) 2 Pa 70/75(+OF) (-/65 SOA) 3 Bo + Pa 100/120(+OF) 3 Bo + In 160 4 2*Bo + RFA 135 5 Bo + In + RFA 200 Extending the reach of 10 GE at 1310 nmComparison ICTON 2005, Barcelona, Spain

  17. Extending the reach of 10 GE at 1310 nmThank you for your attention! ICTON 2005, Barcelona, Spain

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