Maximizing the efficiency of dwdm networks 100 gbs and beyond
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1 | © 2011 Infinera Corporation Maximizing the Efficiency of DWDM Networks 100Gb/s and Beyond Anuj Malik Solutions Marketing
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TIA 2012 Presentation 100G is here. We are at the cusp of a step upgrade in network fiber bandwidth from hundreds of gigabits to several terabits, an order of magnitude increase in capacity. So far, the 100G discussion has primarily been focused on optics and coherent detection i.e. the fundamental building blocks of 100G. This is akin to figuring out the “how to” of internal combustion – what must be determined now is the “engine block” that wraps around the technology to enable rapid and successful adoption. We explore the mechanisms that can deliver 100G to your networks efficiently. Why? Because to successfully bring down the total cost of ownership any solution must address not just maximizing fiber investment but also lowering CAPEX and OPEX. We look at various mechanisms with a perspective towards 100G that affect efficiency of space, power and network utilization.
Transcript of Maximizing the efficiency of dwdm networks 100 gbs and beyond
1 | © 2011 Infinera Corporation
Maximizing the Efficiency of DWDM Networks 100Gb/s and Beyond Anuj Malik
Solutions Marketing
2 | © 2011 Infinera Corporation
Evolving Network Requirements
Capex + Opex / Revenue = Flat
Bandwidth is soaring
Revenue is flat
90% services ≤ 10G
Scale
Low TCO
Efficient
Even in 2017 Services Remain ≤10G*
Sub 10G
10G
40G
100G
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Foundations of 100G
Coherent Detection • DSP ASIC
• High Gain FEC DP-QPSK Modulation
Fiber Capacity
Advanced Modulation
Coherent Detection
Advanced FEC
Foundation Features
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Quick Refresher On 10G Optical Engineering
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TRANSMISSION RECEPTION
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With 100G … Modulation and reception techniques got complex
TRANSMISSION RECEPTION
AMPLITUDE MODULATION
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PHASE MODULATION
DIRECT DETECTION
Optical Mixer
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COHERENT DETECTION
LO TIA ADC PD
SIGNAL PROCESSING
DSP
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PM-QPSK Transmitter
This is a single carrier PM-QPSK transmitter implemented with discrete optics
Im{Ex}
Re{Ex}
Im{Ey}
Re{Ey}
Modulators
Power Splitter
Polarization Beam
Combiner
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Coherent PM-QPSK Receiver
CMOS
This is a single carrier PM-QPSK receiver implemented with discrete optics
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Challenge of 100G Networks
PICs enables Simplicity & Scalability
Simplified With Photonic Integration
MUXPONDER EQUIVALENT MUXPONDER EQUIVALENT
100G Requires Many Components
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Look How IC’s Revolutionized Electronics
More Functions Capabilities Reliability
Less Space Power Unit Cost
Photonic Integrated Circuits Revolutionizes Optics
Source: Wikipedia
10 | © 2011 Infinera Corporation
Photonic Integration Creates Network Value …
Less Power
Less Space
More Scale
Simpler
Lower TCO
69% less
# Modules/Cards 9,770
3,024
67% less
# Chassis 568
189
33% less
Rack Space
150%
100%
50% less
Power
200%
100%
4D Junction; 1T/degree; 25% Add/Drop
Capacity
100%
~250% ~2-3X more
56% lower
Total Costs 225%
100%
*Data shown as per study on N. American Long Haul Collector Network
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Integrated Switching - Key For Network Efficiency
Inefficient mapping of sub-l services into
WDM l’s
Inefficient l fill
10% fill
40% fill
30% fill
1 x 10G Svc
100G l
4 x 10G Svc
100G l
100G l 3 x 10G Svc
All Optical Architecture
10% fill
40% fill
30% fill
80% fill
1 x 10G Svc
100G l
4 x 10G Svc
100G l
100G l 3 x 10G Svc
Integrated WDM + Switch Architecture
Integrated Switching enables network
efficiency & lowers cost
12 | © 2011 Infinera Corporation
What is beyond 100G? The emergence of super channels
LINE MODULE
Delivers excellent optical performance
Must be provisioned in a single operational
cycle
Operational Scale
Fiber Capacity
Next Gen Services
Super-channel: several DWDM carriers combined on one line card to create a channel >100G
Split Spectrum
500 GHz*
(G.694.1 50GHz Grid)
Contiguous Spectrum (aka “FlexGrid”, “gridless”)
375 GHz
Types of Super Channels
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Large Scale PIC Implementation More Compact, More Efficient, More Reliable
TX PIC
Super-channel in a single line card
Photonic Integration is the solution • Enables greater density • 10 x capacity in a DENSE FORM
FACTOR
RX PIC
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Integrated Switching: Abstraction of Client Side and Line Side
Bandwidth Virtualization
Super-Channel Line Card
Super-Channel Line Card
Super-Channel Line Card
500Gb/s PM-BPSK
1Tb/s PM-QPSK
1Tb/s 16QAM
Super-Channels may be different capacities • Requires flexible OTN container (OTUadapt)
Client services may vary from GbE to >100GbE • Bandwidth Virtualization is essential
GbE
10GbE
100GbE
Next Gen
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100G Network: PIC + Integrated Switching vs All-Optical
Typical regional/national network
CA
PEX
O
PEX
40%
TCO Benefit
60%
30%
31%
32%
33%
34%
35%
36%
37%
38%
39%
40%
Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10
TCO Benefit: PIC + Integrated Switching vs All -Optical
~40% TCO Benefit
16 | © 2011 Infinera Corporation
100G Waves is Necessary, But Not Sufficient
Advanced Modulation
Coherent Detection
Advanced FEC Scale
Photonic Integration
Integrated Switching
Low TCO
Efficient
17 | © 2011 Infinera Corporation
Thank You
