optimization of wdm system architecture using 100g technology

Optimization of WDM system architecture using 100G technology

Guillaume Crenn, Product Line Manager

Presentation Agenda

100G Market & Technology overview

100G benefit in WDM networks

Potential issue and Workaround

Next step to increase system capacity

100G Market status

Explosive Growth in Ethernet/IP Services/Traffic

CAGR: 2009-2016: 13.2%

Source: Ovum

Ethernet Services Revenue


Source: Cisco

IP Traffic Growing at a much faster rate than Ethernet Services Revenue

CAGR: 2010-2015: 32%


2008 2009 2010 2011 2012 2013 2014 2015 20160

100000

200000

300000

400000

500000

600000

700000

800000

900000

Services Greater than 1G

Services Greater than 1G

Services at rates greater than 1G growing at an alarming rate

Market is driving demand for higher rate services at a lower cost

CAGR: 2008-2016: 35.8% - 10G services Grew > 60% CAGR

Source: Ovum

How are Service Providers Reacting? (1/2)

Ethernet Services and IP Traffic Growth Result in Huge Growth in Global Bandwidth Demand

How are Service Providers Reacting? (2/2)

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 20160

50,000

100,000

150,000

200,000

250,000

40G & 100G Volumes

40G & 100G Volumes

Service Providers are putting in bigger Pipes Today to better utilize expensive fiber infrastructure

Source: Ovum

100G technology overview

100G transmission technology

10G transmission mainly uses NRZ modulation and Direct detection OOK-NRZ (On Off Keying – None Return to Zero) modulation format

40G transmission: different type of modulation used by different vendors No real 40G standardization Direct or coherent detection technology available

100G: Standardization of the line interface This standardization has caused the technology to mature faster than 40G and

therefore will result in a higher adoption rate

Same technology used by all players on the terrestrial 100G market today DP or PM-QPSK modulation Format and Coherent receiver Optical design similar for all competitors Performance differentiation at DSP level

Routers are rapidly moving toward 100G interconnect to accommodate the increase in IP traffic

Native 100G client interfaces standardized and available

Numerous component vendors have introduced 100G technology to the market in the last 3-6 months causing the economics to improve quickly

Physical Layer 100 Gigabit Ethernet7m over Copper Cable 100GBase-CR10100m over OM3 MMF 100GBASE-SR10125m over OM4 MMF 100GBASE-SR1010km over SMF 100GBASE-LR410km over SMF 100GBASE-LR1040km over SMF 100GBASE-ER4

100G transmission technology

100G Competition Status

Field trial over Long haul routes achieved on operators live networks since 2 to 3 years Few 100G channels added on live 10G and 40G networks

First network deployment announced beginning of last year (2011 H1) Few Metro Networks already running at 100G

1rst commercial route for 100G traffic: Paris-Frankfurt

Massive 100G network deployment since 2011 H2 and 2012 H1

Transponders (native 100G client ports) and Muxponder (aggregation of 10G client ports in a 100G line available in all 100G players portfolio

100G benefits in WDM networks

100G Network design rules Utilizes the same hardware as 10G and 40G (filters, amps,

etc.) Compatible with all MUX/DMUXs, ROADMs, OADMs, already installed in your

network Works with both 50GHz and 100GHz channel plans Utilizes standard ITU Grid

Required OSNR around 14 dB Compatible with the large majority of 10G and 40G installed systems Transmission over 3000 to 4000 kilometers

±50 000 ps/nm of Chromatic dispersion tolerance Much more tolerant than the 10G or 40G optical interfaces 10G tolerance around 2000 ps/nm max

PMD tolerance > 30ps (100ps of DGD) Much more tolerant than the 10G or 40G interfaces 10G tolerance around 10 to 12 ps

100G deployment: green field

Green field deployment: new WDM network based on 100G only High capacity backbone network

Capacity per fiber pair increases by a factor 10 compared to 10G design

Granularity to lower bit rate client ports using Muxponder Client ports can be 100G, using transponders Client can also be 40G, 10G or lower by using Muxponder

Infrastructure Cost reduction on network infrastructure due to dispersion compensation removal

Real Life Customer Scenario

3200 Km Network – 38 spans ranging from 66km to 150km100G does not require dispersion compensation like 10G.

Eliminating Dispersion Compensation Saves 37%(On commons: chassis, amps, dispersion, management cards)

This can be used to pay for sellable customer services

Deploying with 100G instead of 10G paid for the first 100G Channel!

ODC ODC

ODC ODC ODC

100Gb/sAdditional wavelength

Ekinops PM C1002/C2002

100G TRP or MXP

100Gb/sAdditional wavelength

10G/20Gb/sAdditional wavelength

100G TRP or MXP

Upgrading Existing Systems with Additional 100G capacity100G FEC allows good performance over existing line

systemsSame OSNR and power per channel range for existing

10G/40G channels and new additional 100G channels

100G deployment: Upgrade and optimization of existing systems

100G Option for Expanding Capacity

100G performance: = to or better than most 10G systems

100G Alien waves can use existing 10G design rules with potential bypassing of regens

12.7 km3.2 dB

109.4 km23.1 dB

105.1 km21.4 dB

102km21.1 dB

48km10.1 dB

105.5km21.5 dB

100.2km20.4 dB

109.6km23.9 dB

POP-1

POP-4ReGen, Add/Drop

POP-2 POP-3

Hut-1 Hut-2 Hut-3 Hut-5 Hut-6 Hut-7

58.6 km12.3 dB

Hut-14(10G ReGen)

Hut-8 Hut-9

POP-5 POP-6

Hut-11Hut-10 Hut-12 Hut-13 Hut-18Hut-17Hut-16Hut-15

120.6km20.6 dB

107.1km21.5 dB

107.5km21.3 dB

105.3km20.6dB

104.5km20.3dB

105.4km20.5dB

100.4km19.8dB

100.2km19.5dB

94.5km18.9dB

64.6km12.8dB

102.8km20.3dB

98.4km19.3dB

90.2km17.7dB

85.3km17.1dB

100G

100G

100G

POP-7

100G Express

Typical 10G Ekinops 100GPMD 10-12 ps 30 psDispersion ~ 300-700 ps/nm 50,000 ps/nmDistance ~ 2,500 km > 3,000 kmOSNR 16-17 dB 14 dB w/DynaFEC

32 Channel System, 30 Channels Lit

Field Trial

9-Spans, 751 km

Extending to Full Route

14-Spans, 1,387 km

100G Option for Expanding Capacity (Continued)

Eliminate the need for equipment upgrades to existing 10G systems Avoid: Cost of new filters, amps, DCM, etc. Cost of field tech’s deployment, planning, etc. Downtime, customer satisfaction / SLA issues

And with a smaller form factor… Eliminate space & power issues 1 RU: Rack chassis even in very tight spaces 230W (4.8A): Run power cables to existing fuse panels

No new power cables to BDP

12.7 km3.2 dB

109.4 km23.1 dB

105.1 km21.4 dB

102km21.1 dB

48km10.1 dB

105.5km21.5 dB

100.2km20.4 dB

109.6km23.9 dB

POP-1

POP-4ReGen, Add/Drop

POP-2 POP-3

Hut-1 Hut-2 Hut-3 Hut-5 Hut-6 Hut-7

58.6 km12.3 dB

Hut-14(10G ReGen)

Hut-8 Hut-9

POP-5 POP-6

Hut-11Hut-10 Hut-12 Hut-13 Hut-18Hut-17Hut-16Hut-15

120.6km20.6 dB

107.1km21.5 dB

107.5km21.3 dB

105.3km20.6dB

104.5km20.3dB

105.4km20.5dB

100.4km19.8dB

100.2km19.5dB

94.5km18.9dB

64.6km12.8dB

102.8km20.3dB

98.4km19.3dB

90.2km17.7dB

85.3km17.1dB

100G

100G

100G

POP-7

100G Express

32 Channel System, 30 Channels Lit

9-Spans, 751 km 14-Spans, 1,387 km

• No need to deploy a new WDM system if you are missing capacity• Even If 10G is your primary service rate, you can get 10x 10G into

the same spectrum as 1X 10G previously

10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G10G

10G10G10G10G10G10G10G10G10G10G10G10G10G10G

10G

10G

10G

10G

10G

10G

10G

10G

10G

10G

9 free ports available for additional deployment

10 X 10G channels

10 X 10G channels

1 X 100G channel

100G deployment: Upgrade and optimization of existing systems

100G Muxponder

100G Issues and workaround

100G potential issue

Issue with Most 100G solutions

Only available in large form factors not suitable for applications with limited space

Footprint can also be an issue in co-location environmentsBut: Some low footprint solution are available for limited

space

Cost: 100G Muxponder designed for Long haul today remain more expensive the 10 X 10G TRP

But: a)The cost savings on Infrastructure deployment can

reduce the Price Gap for green field deploymentb) 100G standardization with all component suppliers

working on the same technology, will lead to efficient price reduction on 100G market

Ekinops Proprietary information

Next steps for WDM systems

Optical EvolutionFlex Coherent Flex Coherent (100G)

Modulation format evolution for distance versus capacity optimization

DP BPSK, DP QPSK, DP 8QAM, DP 16QAM

Trade-off of Spectral efficiency versus OSNRModulation

Distance (km)

Total capacity

Application

DP BPSK 6000 4 Tb/s Very Long Haul & Submarine

DP QPSK 3000 8 Tb/s Long Haul

DP 8QAM 1500 12 Tb/s High capacity route

DP 16QAM 750 16 Tb/s High capacity route

100G Optical EvolutionWave Bounding /SuperChannel

400Gb/s -1Tb/s100G use 50Gb/s DSP and 25GHz Optical receiver

(available today)1000G (1T) will require 500Gb/s DSP and 250GHz optical

receiver Such type of DSP will not be available before the next decade

Wavebonding: the information is distributed over several subcarriers spaced as closely to form a SuperChannel (example 10 x 100Gb/s @50GHz :500GHz)

10 x 100G = 1Tb/s @ 500GHz

100G Optical Evolution Flex Grid Spectrum efficiency optimization

No need to keep 50GHz between sub carriers 37,5GHz is enough for DP-DPSK

10 x 100G = 1Tb/s @ 500GHz

10 x 100G = 1Tb/s @ 375GHz

100G Optical Evolution Flex Grid Each Sub-Carrier transporting a lower Bit Rate,

compatible with current 100G components

Flex-Spectrum DWDM filtering is adopted enabling Multi-carrier add and drop.Current ROADMs are already compatible with flexgridCapacity to Add & drop full or sub-part of each super

channel

10 x 100G = 1Tb/s @ 375GHz

SuperChannel #1

10 x 100G = 1Tb/s @ 375GHz

SuperChannel #2

10 x 100G = 1Tb/s @ 375GHz

SuperChannel #3

Optimized Hybrid Amplifier (Erbium/Raman)For 100G /400G/1T transport.Optimization of the Bandwidth,Optimization of the noise flatnessOptimization of the noise figure at nominal point

100G Optical Evolution Optical amplifier schemes

Thank You

optimization of wdm system architecture using 100g technology

Documents

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g services

g benefit

g standardizationdirect

g market todaydp

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