PPT《Beyond 10 Gbps》

Beyond

10 Gbps J.

LivasChief TechnologistCore Transport Business Group What is a High Bandwidth Application? Residential Triple Play Voice Standard Definition Video Distribution High Definition Video Distribution Games Business Data VPN Storage Multi-core Processors Supercomputer GRID Interconnectivity Remote Visualization Specialized Applications Mainstream Applications LOW MEDIUM HIGH 3-40 Mbps

64 Kbps 20-1500 Mbps few Mbps few C many Mbps many Mbps Gbps Gbps Gbps Research Data Collection Tbps Common Arguments for

100 Gbps Must include propagation costs Relative Rate Propagation Total System (Gbps)Cost Cost 2.5

0 1.0

10 1 3.5

40 10?16?

100 20?36? Economics:Relative Rate Electronics (Gbps) cost 2.5 1.0

10 2.5

40 6.2

100 16

5 If everyone else were jumping off a cliff, would you jump too? Everyone else is doing it

4 Have more tribs C no ops savings unless tribs outside scope Op-simplicity: fewer channels to manage

3 Not a SONET/SDH rate No physics driver (not a "magic" rate)

2 10 Gbps/25 GHz = 0.4 b/s/Hz(SAME) Spectral Efficiency:100 Gbps/400 GHz = 0.4 b/s/Hz

1 Con Pro Total System Costs Family of curves for each application space: Lowest Cost PropagationCosts ElectronicsCosts Goal is Lowest Cost Transport Lowest Cost Data Rate depends on Distance and Capacity System Range: Cost Driver: 10,000 km 20G 10G 5G 2.5G 1.25G

100 m

100 km

500 km

1500 km Data Rate for Lowest Cost for ~

1 TBPS Capacity 40G "Log" Distance Parallel Optics Electronics Propagation Propagation Intra-office Metro Long Haul ULH Now 100G Under development Match the Answer to the Application Increase Bit Rate or Tighter Spacing? 10GB @ 12.5GHz=>Faster cost-effective deployment40GB @

50 GHz=>Deployment in 0-1 years CoreStream:Flexible Transport Platform for the Future One Platform for all applicationsFEC, Raman, and EDFAs allow CoreStream to handle span designs from

1600 - 3200kmCoreStream is approved for NDSF, NZDSF, and DSFTransceivers for 2.5G and 10G GA today, 40G available for lab demos now.50GHz (for ~3000km) & 25GHz (up to ~2000km) channel spacingsCost is reduced by installing special technologies only where needed25GHz systems can used to provide high capacities as 40G technologies become more cost effective

8 Channels10 Gbps25 GHz spacing

28 Channels40 Gbps100 GHz spacing Channel Counts are C-Band only. >3000 km, 80x10Gb/s NRZ @

50 GHz

2000 km, 160x10Gb/s NRZ @

25 GHz Up to

1600 km, 40x40Gb/s CS-RZ @

100 GHz or 160x10Gb/s NRZ @

25 GHz Numbers assume NDSF and

8 dB FEC OADM Nodes Data rates/channel spacing mixed at the sub-band level Mixed rate deployment likely Optimize Capacity x Distance for each sub-band separately Demonstrated System Capabilitywith Raman 1600km 1600km 1600km 1000km 1600km Distance 1.44Tb/s 32ch x 40G + 16ch x 10G TW 1.60Tb/s 40ch x 40G TW-RS 1.44Tb/s 32ch x 40G + 16ch x 10G E-LEAF 1.00Tb/s 19ch x 40G + 24ch x 10G DSF 1.60Tb/s 40ch x 40G NDSF Total Capacity Best mixed 40/10G Capacity Fiber Type Capacity is for C-band propagation only Pure 10G capacity is 1.92 Tbps Distances are ~

1200 km without Raman 40G + 10G Dispersion CompensationOne example of a technical challenge 10G TX 10G TX Optional Trim Router DCF Optional TrimRouter DCF RX Router DCF OptionalRX Router DCF TX AmpPre-comp. Line Amp Slope Compensation RX AmpPost-comp. ShelfAmplifier ShelfAmplifier Per channelTunable DC 40G TX 40G TX Common to both 10G and 40G channels 40G and 10G must share dispersion maps In-line dispersion is common to both rates Pre/post compensation may be different Practical experience suggests main difference is tolerance 40G requires smaller residual easily handled at transmitter and/or receiver TX Terminal RX Terminal 10G RX 10G RX 40G RX 40G RX GA CoreStream Line System Transparent Service MultiplexingAccess vs Transport Rate Access Rate need not match Transport RateSeparately optimize for cost, convenienceGrooming is critical: integrated L0 + L1 + L? What the Carrier sees:"Economical transportof a variety of serviceswith a single platform" 100G Channel DWDM DWDM LogicalLink PhysicalLink 100GbEServices 10G Channel 100GbEServices SONET/SDH 10G