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8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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1 | Infinera Confidential & Proprietary
Advances in Optical Networking:Coherent, Super-Channels and the
Value of Integrated Switching
Steve Pegg, Infinera
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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2 | Infinera Confidential & Proprietary
Agenda:
The Key To Network Flexibility
Fibre Capacity
Operational Scale
Network Efficiency
Fibre Capacity
Operational Scale
Network Efficiency
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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What is Coherent and what does it deliver?
Coherent Technologies
Advanced Modulation
Polarization Multiplexing
Coherent Detection
Advanced
Digital Signal Processing The same or better reach!
Before
Coherent
C-Band
80 Channels@10Gb/s
800Gb/s
100G
Coherent
C-Band80 Channels@100Gb/s
8Tb/s
Super-Channel
Coherent
C-Band
Gridless9.5Tb/s
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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4 | Infinera Confidential & Proprietary
Modulation Normalized Reach C-Band Capacity Application
PM-BPSK 5000 km 5Tb/s Subsea
PM-QPSK 3000 km 10Tb/s Long-Haul
PM-16QAM 500 km 20Tb/s Metro
There is no single, correct coherent modulation:
FlexCoherent: Optimizing Spectral Efficiency vs. Reach
Reach Capacity
Etc.Etc.
PM-QPSKPM-QPSK PM-16QAMPM-16QAM
PM-BPSKPM-BPSK
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Is Photonic Integration Important at 100G?Component cost breakdown for 100G co-PM-QPSK Transponder
DSP + FEC
11%
Optical Components55%
Other Components
34%
Photonic integration offers significant benefits at 100G and beyond!
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6 | Infinera Confidential & Proprietary
Agenda:
The Key To Network Flexibility
Fibre Capacity
Operational Scale
Network Efficiency
Fibre Capacity
Operational Scale
Network Efficiency
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
7/197 | Infinera Confidential & Proprietary
100G Line Card
100G Line Card
100G Line Card
100G Line Card
100G Line Card
100G Line Card
100G Line Card
100G Line Card
100G Line Card
100G Line Card
One way to bring 1Tb/s into service
Bulky
Power-hungry
Does not scale operationally
http://localhost/var/www/apps/conversion/tmp/scratch_3//upload.wikimedia.org/wikipedia/commons/3/37/Clock.gif8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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Super-Channels Solve the Problem of Operational Scale
Line
Card
A super-channel
implements multiplecarriers - ideally in a
single line card
It has excellentoptical performance
All carriers are
provisioned in a single
operational cycle
And is seen as a
single unit of capacity
by the services that use it
Itspractical
to build
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10 Lasers
40 modulators32GBaud electronics
Photonic ICs
Time to Market: ~2 years
375 GHz375 GHz
2 Lasers
8 modulators160Gbaud electronics
~16nm Silicon
Time to Market: ~7 years
1 Tb/s PM-QPSK
375 GHz
1 Laser
4 modulators320Gbaud electronics
~ 11 nm Silicon
Time to Market: ~10 years
Why do we need multi-carriersuper-channels?
C Band
Must be spectrally efficient, andpossible to manufacture
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
10/1910 | Infinera Confidential & Proprietary
1 Tb/s in a single line card
AOFX-1000-T8-1-C8
FC1-4/1-6/1-8
Large Scale PICs: Optimal for Super-Channels
The most Practical Approachfor Coherent Super-Channels
1T RX PIC
1T TX PIC
10 channels of Tx
10 channels of Rx
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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Rahn, J.; Sun, H.; Wu, K.T.; Basch, B.E. IEEE Journal of Lightwave Technology, 2012, Issue 99:
Real-Time PMD Tolerance Measurements of a PIC Based 500Gb/s Coherent Optical Modem
500G Tx Module 500G Rx Module
Industry leading performance
Peak PMD tolerance to 500ps
Tolerant to high speed PMD transients
Constellation diagrams
World Record PMD Compensation Performance
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
12/1912 | Infinera Confidential & Proprietary
Agenda:
The Key To Network Flexibility
Fibre Capacity
Operational Scale
Network Efficiency
Fibre Capacity
Operational Scale
Network Efficiency
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
13/1913 | Infinera Confidential & Proprietary
IEEE HSSG
What will the next data rate be?
Transport
Platform
Ethernet Data Rates
1GbE
10GbE
40GbE
100GbE
???
Other Services
FiberChannel
SONET/SDH
Video Services
Custom R&E traffic
Client Side Line SideSuper-Channel Data Rates
1Tb/s (10C-PM-QPSK)
500Gb/s (10C-PM-QPSK)
400Gb/s (DC-PM-16QAM)
250Gb/s (10C-PM-BPSK)
200Gb/s (DC-PM-QPSK)
100Gb/s (DC-PM-BPSK)
OTN Container Sizes (approx)
ODU0 1.25Gb/s
ODU1 2.5Gb/s
ODU2 10Gb/s
ODU3 40Gb/s
ODU4 100Gb/s
ODU???
Super-channel modulation has to beflexible(eg. FlexCoherent),
so OTN container size must beflexibletoo (OTUadapt)
OTUadaptITU-T SG15
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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Majority of client services
remain at 10G or less
100G services are emerging,
but represent mostly core
network needs
What the services mix tells usMore switching required for lower speed services
Sub 10G
10G
40G
100G
Majority of the
Client/Service Demands
remain 10G
(Source: Ovum, 2012)
Client Port Mix (2017)
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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Problem Statement
What is the most efficient way to
build the next gen network
Key findings:
Muxponders & Separate switching
are too complex & costly
Integrated OTN switching is a musthave
The architectural choices are clear
WDM only(Muxponders)
WDM + Stand-alone Switch
Integrated WDM + Switch
Photonic IC
based
Non PIC-based
Architectural Options
Switching refers to OTN Switching
8/10/2019 Advances in Optical Networking in Coherent, Super-Channels and the Value of Integrated Switching
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Integrated Switching is Clearly Advantageous
Example is for single100G wave: Imagine 80x this!
50%
100G wave with
5 x 10G services
40 %
100G wave with
4 x 10G services90%
Efficiently filled
100G wave
Manual patches result
in operational
inflexibility
Fibre
direction #1
Fibre
direction #2
Fibre
direction #3
CapEx penalty of stand-
alone switch
OpEx penalty of extra
space/power
CapEx penalty of
multiple 10G inter-
connect between
Switch and WDM
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Integrated Switch + PIC-based WDMis even better
100G wave with
5 x 10G services
W
Fibre
direction #3
Efficiently filled
100G wave
Fibre
direction #1
50%
Fibre
direction #240 %
100G wave with
4 x 10G services90%
Eliminate
Interconnects
Reduce
Space/Power
Eliminate Separate
Switch
Automate
Connections
Compare PIC-based platform to discrete optical implementations
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18 | Infinera Confidential & Proprietary
Agenda:
The Key To Network Flexibility
Fibre Capacity
Operational Scale
Network Efficiency
Fibre Capacity
Operational Scale
Network Efficiency
Large Scale PICsare the critical enabling technology
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Thank You!Steve Pegg