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Flexible Transport Networks. Steven D. Robinson VP, Product Management srobinson@meriton.com. Five Essential Elements of Next Generation Optical Networks. OPM. ADM. ADM. Mux. Mux. ROADM. O P M. Design Networks in Minutes. West. East. Up to 16 degrees. - PowerPoint PPT Presentation
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Flexible Transport Networks
Steven D. RobinsonVP, Product Management
srobinson@meriton.com
Confidential
2
Fully Flexible Reconfigurability Simple, Agile, Self Maintaining Systems
Pay as You Grow Scalability Start with 1 , grow by 1
Seamless upgrade to 100G (efficiently)
Efficient Aggreg. & Switching Integrated “ADM-on-a-blade”, BW efficient
TRs Sub switching, Carrier Ethernet Transport
Multi-Degree Operation Both Optical & Electrical Multi-degree Options
Automated Network Planning One time Node Engineering, GMPLS Control
and Management Systems Plane & True “Point-and-Click” Provisioning
Five Essential Elements of Next Generation Optical Networks
ROADM
OPM
OPM
Mux Mux
ADM ADM
West EastDesign Networks
in Minutes
Up to 16 degrees
Confidential
3
What is a ROADM?What is a ROADM?
DROPsADDs
ROADMModule
OPM
ROADMModule
Key attributes of ROADM Module
Fully Flexible, Remotely Reconfigurable Optical Add Drop
Automatic power equalization on inputs, outputs, adds, drops
Optical Power Monitoring (OPM) of all channels
Reconfigurable Optical Add/Drop Multiplexer (ROADM)
Key benefits of ROADM Module
Elimination of the OEO “Pass-through” tax Wavelength Reuse Scaleable Bandwidth (Start with 1 , grow by 1 )
Single Wavelength Granularity – No stranded bandwidth
Fully Automated Optical Layer
Confidential
4
WDM Optical Transport Technology Options
Fixed Port ROADM
FOADM
Multi-Degree WSS with fixed filters
Fixeddrops
OPM
Per Optica
l Switch
Multi-port Mux/Demux
OPM
FixedAdds
2 Degree ROADMBlocker/IPLC
with fixed filtersOPM
Splitter /Drop filters
Add Filters/Combiner
OPM
WB Module
OEO Regen(Point-to-point DWDM)
Tunable Filter
* Manages all wavelengths * Lower system cost* No OEO Pass-thru tax* Fully Flexible Ports enable: Any to any port Supports Tunable lasers
Dynamic Management Jumper-less provisioning* Multiple wavelengths/drop port Mesh node capability Ring interconnection
* Manages all wavelengths * Lower system cost* No OEO Pass-thru tax* Fully Flexible Ports enable: Any to any port Supports Tunable lasers
Dynamic Management Jumper-less provisioning* Multiple wavelengths/drop port Mesh node capability Ring interconnection
Multi-Degree WSS ROADMwith colorless ports
Fully Flexible Multi-degree ROADM
Per Optical Switch
Multi-port Mux/Demux
OPM
Drops
OPM
Confidential
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Why do customers like “All optical”
13 14 15 16 17 18 19 20 21 1-12
Source321
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0
1
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e C
ost
, $
All Optical All OEO
21 21 20 20 19 19 18 18 17 17 16 16 15 15 14 14 13 13 12 12
All OEO or “Digital Transport”: At least 380 Transponders
ILA
All Optical ROADM : 42 Transponders
21 121 1 1 1 1 1 1 1 1
ILA
In many cases, “All optical” can dramatically reduce the number of
unnecessary Transponders
Confidential
6
OEO or ROADMWhich is the better choice?
Decision depends on: Bit Rate; Number of Wavelengths Topology & Traffic Patterns Switching Need (which determines # of pass-thrus vs # of drops)
Size (# nodes and span length) Amplify? Regen? Total Cost of Ownership (OPEX vs. CAPEX)
ROADMROADM
2 4 6 8 10 12 14 16 182 4 6 8 10 12 14 16 18
40 Gb/s40 Gb/s
Number of Pass-Thru ChannelsNumber of Pass-Thru Channels
Bit
Rat
eB
it R
ate
10 Gb/s10 Gb/s
2.5 Gb/s2.5 Gb/s
OEO
OEO ROADMROADM
ROADMROADM
Confidential
7
2.5G
2.5G Per WL OEO Switch
10G
10G
40G
100G
Multi-Degree OEO Switching
Multi-degree ROADM or OEO?Why be forced to choose?
All Optical ROADM Advantages: Fully Bit Rate Transparent
1G 10G 100G Per wavelength Scaleable
1 2 . . . 40 Lower Power Fully Automated Optical Layer Low Pass-thru costs
OEO Advantages: Sub-Wavelength Switching Potentially Lower Terminal Costs
(at full capacity) Simpler Optical Engineering Simpler Multi-Degree Operation
Multi-DegreeROADM Switch
Digital ROADMNode
Confidential
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Maintain manageable regions of transparency
Digital ROADM Hybrid NodeLowest Overall Cost & Flexibility
DigitalROADM
Node
0
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ost
, $
All Optical DigitalROADMHybrid
All OEO
Topology Agnostic Traffic Pattern Agnostic Bit Rate Agnostic Simpler Optical Engineering Simpler Multi-Degree Operation Lower overall cost solution
Per WL OEO
Switch
Multi-DegreeAll Optical ROADM
Multi-Degree Digital
Switching
2.5G2.5G10G10G
40G100G
All Optical Spur
All OpticalROADM
TRTR
Confidential
9
Key Technologies used to Provide Flexible Transport Networks
Fully Flexible WSS ROADMs
ROADM Systems provide much more than just Wavelength Reconfigurability They provide a total “Agile Optical Network” Solution
Integrated Platforms
RapidAutomated Network
Planning
Cross Optical Switchw/ Integrated. Transport
GMPLSControl Plane
and End-to-End Management
Widely TunableLasersFully Automated
Optical Layer
Hot- Pluggable SFPs & XFPs
Multi-Service ADM-on-a-
blade
Integrated Carrier Ethernet Transport
True Point-and-click Planning & Provisioning
AGC / Transient Controlled Optical Amplifiers (OAs)
Integrated Optical Cabling
Flexible, Transparent Optical Interfaces
Confidential
10
Flexible Networks Summary
Customers have recognized that low OPEX is now just as important as the lowest CAPEX
ROADM Modules are just one part of realizing the Next Generation Agile Optical Network
Other technologies such as automated planning tools, widely tunable lasers, optical backplanes, Pluggables, and GMPLScan dramatically simplify planning, operation & management
Selection of the right kind of ROADM is crucial to realizing these savings (Colorless Port, modular, WSS based ROADMs are the best choice)
These systems must be designed from the ground up to realize their full potential (Bolt-on ROADMs don’t work)
Digital ROADM Hybrid Solution may offer the best flexibility and lowest overall cost
MP-WSS OPM
Flexible Drops Flexible
Adds
WSS
2.5G2.5G10G10G
40G100G
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