Span Design considerations in TAT-14 US Backhaul across G.652 Fiber
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Presentation given at Optical Networking USA 2014 conference in Dallas
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Span Design considerations in TAT-14 US Backhaul across G.652 Fiber
- 1. Span Design Considerations in TAT-14 US Backhaul Roderick Dottin – Orange Business Services October 8, 2014 100G ULH DWDM across G.652 fiber
- 2. interne Orange 2 Orange SWAP Project – Overall Planning 2014 2017 2016 No swap in France 2016 2015 2014 2015 International Network 2013 Pilot Launched between Bordeaux and Madrid EoY’ 2013
- 3. 3 interne Orange Orange SWAP Project – Overall Planning (Cont'd) TAT-14 US Backhaul Trans-Atlantic New York Philadelphia North route South route
- 4. Orange presentation DWDM not simply Dumb Fat Pipe Integrated ROADM + OTN network elements support flexible channel grid spacing and colourless MxN WSS allowing any Client-Side OTN transponder to connect to any wavelength within any WDM degree Provides scalable optical bypass and dynamic restoration within the core Dark fiber assets (now classified as real estate) must be conditioned for tighter link tolerances
- 5. Orange presentation Optical Impairments – Chromatic Dispersion
- 6. Orange presentation Optical Impairments – Polarization Mode Dispersion
- 7. Orange presentation Mitigating Optical Impairments at Higher Data Rate Spectrally-efficient modulation techniques, coherent receiver design and Forward Error Correction (FEC) provide cost-effective solutions to improve noise tolerance Lowers sensitivity to dispersion impairments towards the same degree as encountered with 10Gb/s Allows for effective equalization strategies
- 8. Orange presentation Link Design Key Performance Characteristics
- 9. Existing US Backhaul Span Design 9577-S9 9577-S8 9577-S7 9577-S6 9577-S5 20396-S008 20396-S007 20396-S005 Orange presentation
- 10. Orange 100G DWDM over G.652 – Span Design Solution Orange presentation TAT-14 US Backhaul Span Design (~20dB Loss/Span) based on 100G over G.652 with Hard-Decision (HD) Forward Error Correction
- 11. Modified US Backhaul Express Route Non-linear fiber impairments resulting from high launch power when using Erbium Doped Fiber Amplifier (EDFA) approaches the span reach limit achievable on standard singlemode fiber SMF-28 (G.652) Tuckerton Hudson Philadelphia Woodbridge Hopewell AC Express New York (XFT6) Manasquan FO G652 – PMD: 0.5ps/sqrt(km) 79.8km – 19.5dB EOL 61km – 15.9dB EOL 105km – 24dB EOL 91.6km – 22.1dB EOL 37km – 11dB EOL 95.6km – 21.5dB EOL 172km – 41.28dB EOL 86km – 20.64dB EOL Ashburn Glass-Through 172km – 41.28dB EOL TAT-14 US Backhaul – North Route TAT-14 US Backhaul – South Route Proposed extension to Ashburn VA POP Orange presentation
- 12. Orange presentation Ultra Long Haul Span Reach Link Budget Allocation 1 Co propagating Raman Counter propagating Raman K 2 EDFA ••• 1 K 2 ••• 100G 100G 100G 100G 100G 100G PLaunch For Single Raman Amplified Span [3, 6] The target transmission benchmark for 100G DWDM channels should be specified at OSNR of 21.5 to 22.0 dB with better than 10-13 to 10-15 BER performance
- 13. Orange presentation Bringing-Into-Service Test Guidelines S.L.A.T. Guidelines Long-Term BER Guidelines
- 14. Orange presentation Mid-Section Long-Term BER Testing Daisy-chaining the DWDM channels under test increases the number of bits generated by the number of spans traversed and the number of paths end-end 4 x 10G (OTU2) into 1 x 40G (OTU3)
- 16. Thanks !