JDSU Colouless Directionless Containtionless
Transcript of JDSU Colouless Directionless Containtionless
Colorless and Directionless Technology: Increasing the Agility of Optical NetworksBrandon C. Collings, Ph.D.JDSUChief Technology OfficerCommunications and Commercial Optical [email protected], Market WatchSeptember 21, 2010
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The Agile Optical Network (2006)
Bandwidth increasing…Low predictability…Cost pressure
Operators need to improve network efficiency
Photonic
Transport
TDM/Packet
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The Agile Optical Network (2006)
Bandwidth increasing…Low predictability…Cost pressure
Operators need to improve network efficiency
Photonic
Transport
TDM/Packet
2006
Agile Optical Network
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The Agile Optical Network (2006)
Bandwidth increasing…Low predictability…Cost pressure
Operators need to improve network efficiency
Photonic
Transport
TDM/Packet
2006
Agile Optical Network
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Photonic
The Self Aware Network (2010+)
Bandwidth increasing…Low predictability…Cost pressure
Operators need to further improve overall network efficiency
TransportOTN
TDM/Packet
2010
Self Aware Network
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Next-Generation Agile Photonic Networking
Colorless, Directionless and Contentionless Add/Drop is a key feature
Next-Generation Optical Network Agility For…– Dynamically Maintain Network Topology Efficiency
• Continuously re-balance network load optimize topology
• Photonic layer restoration reducing redundancy requirement on higher layers
– Increase Velocity and Simplicity of New Capacity Deployment • Pre-deploy transponders for remote and high-speed turn-up
• Simplified deployment procedures
– Support linerate scalability beyond 100Gb/s
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TR
Colorless, Directionless, Contentionless (CDC) Add/Drop
Every add/drop port pair has the flexibility to:– Use any wavelength (Colorless)
– Connect to any direction or degree (Directionless)
– Utilize any wavelength channel independent of all other channels in use (Contentionless)
EAST
NORTH
WEST
CDC Mux/DemuxCDC Mux/Demux
Mesh Node
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TR
Colorless, Directionless, Contentionless (CDC) Add/Drop
Every add/drop port pair has the flexibility to:– Use any wavelength (Colorless)
– Connect to any direction or degree (Directionless)
– Utilize any wavelength channel independent of all other channels in use (Contentionless)
EAST
NORTH
WEST
TR
TR
CDC Mux/DemuxCDC Mux/Demux
Mesh Node
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TR
Colorless, Directionless, Contentionless (CDC) Add/Drop
Every add/drop port pair has the flexibility to:– Use any wavelength (Colorless)
– Connect to any direction or degree (Directionless)
– Utilize any wavelength channel independent of all other channels in use (Contentionless)
EAST
NORTH
WEST
TR
CDC Mux/DemuxCDC Mux/Demux
Mesh Node
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TR
Colorless, Directionless, Contentionless (CDC) Add/Drop
Every add/drop port pair has the flexibility to:– Use any wavelength (Colorless)
– Connect to any direction or degree (Directionless)
– Utilize any wavelength channel independent of all other channels in use (Contentionless)
EAST
NORTH
WEST
TR
TR
CDC Mux/DemuxCDC Mux/Demux
Mesh NodeT
R
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TR
TR
TR
Colorless, Directionless, Contentionless (CDC) Add/Drop
Every add/drop port pair has the flexibility to:– Use any wavelength (Colorless)
– Connect to any direction or degree (Directionless)
– Utilize any wavelength channel independent of all other channels in use (Contentionless)
EAST
NORTH
WEST
TR
TR
TR
TR
CDC Mux/DemuxCDC Mux/Demux
Mesh NodeT
R
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Traffic Load Balancing (Network Defragmenting)
Network traffic deployed as demand arises (growth not planned)
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Traffic Load Balancing (Network Defragmenting)
Network traffic deployed as demand arises (growth not planned)
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Traffic Load Balancing (Network Defragmenting)
Network traffic deployed as demand arises (growth not planned)
Rebalance network load to relieve congestion and improve overallefficiency (green traffic rerouted as new red traffic pattern)
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Traffic Load Balancing (Network Defragmenting)
Network traffic deployed as demand arises (growth not planned)
Rebalance network load to relieve congestion and improve overallefficiency (blue traffic rerouted as new pink traffic pattern)
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Traffic Load Balancing (Network Defragmenting)
Network traffic deployed as demand arises (growth not planned)
Rebalance network load to relieve congestion and improve overallefficiency
New network connectivity installed as need identified
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Traffic Load Balancing (Network Defragmenting)
Network traffic deployed as demand arises (growth not planned)
Rebalance network load to relieve congestion and improve overallefficiency
New network connectivity installed as need identified (yellow traffic more efficiently routed)
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Photonic Layer Restoration
Photonic network rapidly reconfigured to restore wavelength connectivity Increase availability of photonic layer and transponders– Equipment always in use– Reduces likelihood of simplex operation– Less manual modification of network– Removes need for urgent fault repair– Less redundancy incorporated at higher levels
TxRxTxRx
TxRx
TxRx
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Photonic Layer Restoration
Photonic network rapidly reconfigured to restore wavelength connectivity Increase availability of photonic layer and transponders– Equipment always in use– Reduces likelihood of simplex operation– Less manual modification of network– Removes need for urgent fault repair– Less redundancy incorporated at higher levels
TxRxTxRx
TxRx
TxRx
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Photonic Layer Restoration
Photonic network rapidly reconfigured to restore wavelength connectivity Increase availability of photonic layer and transponders– Equipment always in use– Reduces likelihood of simplex operation– Less manual modification of network– Removes need for urgent fault repair– Less redundancy incorporated at higher levels
TxRxTxRx
TxRx
TxRx
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TxRx Pre-Deployment and Deployment Velocity
Deploy multiple transponders in one action in growing node – Streamlines deployment operations
TxRxTxRx
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TxRx Pre-Deployment and Deployment Velocity
Deploy multiple transponders in one action in growing node – Streamlines deployment operations
TxRxTxRxTxRxTxRx
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TxRx Pre-Deployment and Deployment Velocity
Deploy multiple transponders in one action in growing node – Streamlines deployment operations
Once need materializes, wavelength and route remotely provisioned – New capacity provisioned rapidly for quick response and revenue capture
– Transponders can be used for local traffic or regeneration functionsTxRx
TxRxTxRxTxRx
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WEST
Example Colorless and Directionless Node Architecture (Not Contentionless)
WSS
Power
SplitterW
SSPo
wer
Sp
litte
r
WSSPower Splitter
NORTH
EAST
WSS Power Splitter
WSS
Rx
Rx
Rx
Rx
Rx
Rx
Rx
Rx
WSS
Tx Tx Tx Tx Tx Tx Tx Tx
WSS Power Splitter
WSS
Rx
Rx
Rx
Rx
Rx
Rx
Rx
Rx
WSSTx Tx Tx Tx Tx Tx Tx Tx Add/Drop
Group 2Add/Drop Group 1
Not Contentionless
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General Next-Generation Network Requirements
Colorless, Directionless and Contentionless (CDC)
Modular and scalable to support:– Cost-effective degree growth
– Cost-effective total add/drop port growth
Support for >8 degrees
Support for >100Gb/s linerate wavelengths– Improved OSNR transport performance for acceptable reach
• Support for higher Spectral Efficiency transmission (>2 bit/Hz/s)
– Flexible channel bandwidth definition
More rapid wavelength switching and provisioning
Cost Efficiency
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WSS
WSS
WSS
WSS
High Port Count WSS for Line Side Requirements
Large number of WSS ports to efficiently support:– More than 8 degrees– Direct and loss efficient connections to colorless, directionless and
contentionless add/drop modules
WSS on both mux and demux reduces node loss for better system OSNR– versus broadcast and select architecture
Support flexible channel allocation (gridless)
To colorless & directionless add/drop To colorless & directionless add/drop
WEST EAST
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WSS
WSS
WSS
WSS
General Building Blocks for CDC Add/Drop (Power Splitting Architecture-Demux Only)
WEST EAST
Rx Rx Rx Rx Rx Rx Rx Rx
1:8 Power Splitting
8:1 Space Switching
Channel Filtering
Amplification
Power Splitter
Power Splitter
Power Splitter
Power Splitter
Power Splitter
Power Splitter
Power Splitter
Power Splitter
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WSS
WSS
WSS
WSS
General Building Blocks for CDC Add/Drop (Wavelength Routing Architecture-Demux Only)
WEST EAST
Rx Rx Rx Rx Rx Rx Rx Rx
1:8 Wavelength
Routing
8:1 Space Switching
WSS WSS WSS WSS WSS WSS WSS WSS
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CDC Add/Drop Port Scalability Modular and Scalable: up to 50 or 100% of node capacity– Node degree and add/drop capacity growth is unpredictable
– Cost optimize for ~25%...the majority of nodes
0
100
200
300
400
0 25 50 75 100Network Usage [%]
Num
ber o
f Add
/Dro
p Po
rts
0
100
200
300
400
0 25 50 75 100Network Usage [%]
Num
ber o
f Add
/Dro
p Po
rts
25%
50%
75%100%
1530
60
120
year 6
year 4year 2year 0
6-degree node
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Summary
Next-Generation Self-Aware Photonic Networks – Increased functionality and flexibility for more efficient network
operations
– Colorless, Directionless, Contentionless is a central feature
– Scalability and pay-as-you-grow is critical
Simultaneous consideration of Line-side and CDC architectures critical– High port count WSS for line application to support degrees and
fanout to CDC modules
– CDC implementation options: • Power Splitting: conventional components, inefficient
• Wavelength Routing: complex components, efficient
Thank You!!