Active Technologies, The Sky is the limit

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The needs of fixed access operators are expanding beyond just providing more bandwidth. There are various other drivers for optical access, with different timeframes of need. Some of these can be met with existing fiber technologies, and some will require new technologies. The industry is considering several next generation PON architectures, each addressing the needs and timeframes to varying degrees.

Authors: Ed Harstead & Michael Peeters

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Active Technologies, The Sky is the limit

  1. 1. THE SKY IS THE LIMIT WHAT TO EXPECT NEXT ? Michael Peeters, Wireline CTO FTTH Council München, February 2012v1 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  2. 2. THE SKY IS THE LIMIT BECAUSE WE CANNOT SEE BEYOND THE HORIZON The 3 things we expect will drive technology 1.  Sharing the cost 2.  Saturating bandwidth demand 3.  Flexibility, but not at any costv1 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  3. 3. FLEXIBILITYIN COST ALLOCATION PTP PON•  Favored if Figure of Merit is lowest cost per •  Favored if Figure of Merit is lowest cost per dedicated Mb/s subscriber•  Valid for smaller deployments with short loops •  Favored for higher peak bandwidths •  Valid for all deployments •  Strongly preferred for large COs, longer loops Share&WW&Broadband&Subscriber&Additions& (DellOro) 100% 80% PON 60% Ethernet/Other 40% VDSL ADSL/SHDSL 20% Cable>modem 0% 2010 2011 2012 2013 2014 2015 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  4. 4. BANDWIDTHIS NO LONGER THE CAPTAIN 2010 2015 2020 GPON has enough bandwidth for FTTH beyond 2020 GPON • Lower power dissipation • Symmetrical bandwidth • Resiliency at lower cost 10G PON • ONU evolution • Reduced opex TWDM PON-Drivers for 10G PON ready ONU•  FTTB/DSLAM•  FTTBusiness NGPON2 (40G PON)•  More bandwidth at (Plan) same cost as GPON Drivers for NGPON2 (not yet foreseeable) •  More bandwidth for FTTB/ DSLAM/Business •  CO consolidation• Non-FTTH bandwidth drivers for 10G PON are low volume Market needs are: •  Bandwidth-independent• Non-FTTH bandwidth drivers for NGPON2 are speculative •  More customer-specific COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  5. 5. NGPON2 TRADE-OFFS 40G TDM PON λ-stacked XG-PON One λ per subscriber “XLG-PON” “TWDM PON” WDM PON 40x1G down 40G down ONU 4x10G down ONU ONU ONU ONU ONU OLT OLT OLT ONU ONU ONU 10G up ONU 4x2.5G up ONU ONU No -agility req’d -agile, 4 s 40x1G up -agile, 40 sODN Non-compatible, less flexible. Backwards-compatible, power-splitting Loss ~insensitive to split ratio. Bandwidth More on-demand bandwidth Symmetrical bandwidth Higher risk in 2015 Lower risk in 2015 Higher risk in 2015Implementation Higher speed components •  In the short run, higher speed components cost more, but reduce over time More components and higher complexity •  Over time, cost will be determined by the no. of components and complexity COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  6. 6. NGPON2 COST EVOLUTIONQUALITATIVE PICTURE If we needed NGPON2 today: • XLG-PON would be the most expensive: cost of 40G components and higher optical power • TWDM PON would the lowest cost: leverages existing XG-PON technology Cost cross-over between XLG- PON and TWDM-PON Cost%per%subscriber WDM$PON TWDM)PON XLG)PON At some point in the future: Time •  XLG-PON will be the least expensive: fewest components, lowest complexity Point for BW per Today lambda shift ? 6 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  7. 7. TRANSITION SCENARIOTWO GENERATIONS IN ONE XG-PON 10G down ONU•  Day 1: XG-PON with -agile ONUs: OLT ONU 2.5G up -agile, 4 s•  Future evolution to 40G PON 40G -TWDM-PON -  Replace XG-PON OLT line card TWDM- 4x10G down ONU PON line card with 4- capability ONU -  Existing ONUs tune to correct OLT ONU ONU 4x2.5G up -agile, 4 s 7 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  8. 8. THE FORK IN THE ROAD AND THE PATH FORWARD 40G/10G XLG$PON( TWDM(PON( WDM(PON( Capacity( Drivers: Drivers: Drivers: •  Ultimately the lowest cost, •  Lowest risk for 2015 •  Large scale FTTBusiness: but highest risk for 2015 volume deployment ≥1 Gb/s dedicated volume deployment •  Transition from existing symmetrical bandwidth •  Highest OLT port density XG-PON deployments (high peak bandwidths not •  Legacy ODN compatibility •  Legacy ODN compatibility important) •  SuperPONs (ultra-long reach/ultra-high split) 10G/2.5G XG$PON(2.5G/1.25G GPON( 8 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION

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