simplicity and automation in reconfigurable optical networks · replaces optical demultiplexer,...
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Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications
Simplicity and Automation inReconfigurable Optical Networks
Dr. Tom McDermottDirector, CTO Office, Fujitsu
Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications
Why Reconfigurable Optical Networks for Research and Education?
Distance and capacity
10G circuits across regional distances100Gb/s to Tb/s of capacity
Protocol transparency
Ethernet, SONET, Fiber Channel ProtocolsLowest latency possible
Automation
Rapid circuit establishment and re-arrangement
University University
ResearchLaboratory
ResearchLaboratory
Antenna Site
Radio AstronomyHigh Speed Grid Computing
Uncompressed HD Video
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Optical Networking Evolution
WDM WDM
ROADM
ROADM ROADM
ROADM
ROADM
ROADM ROADM
ROADM
WDM
ROADM
ROADM
ROADM
0-300km2.5G - 160G
0-600km10G-400G
0-1000km10G - 1.6T
Simplicity
Flexibility/DistanceCapacity
•Single Ring Topologies•Reconfigurable wavelength assignment
•Automatic power balancing•Operational ease equivalent to SONET ADMs
•Arbitrary topologies•Dynamic wavelength assignment
•Automatic power balancing•Universal amplifiers
•Tunable components•xWDM access integration
•Sub-wavelength integration•Simpler than SONET Operations
•Point to Point topologies•Static wavelength assignment
•Manual power adjustments•Heavy operational burden
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Optical Hubbing: Dynamic Networking Across any Topology
Two-degree nodes
Multiple, small ringsAdditional Fiber pairs requiredCostly OEO between ringsManual Fibering Between RingsNon-integrated spurs
Single growable structureOnly 1 fiber pair between any two sitesNo OEO between ringsAutomated connectivity between ringsIntegrated spurs
ROADM
ROADM
ROADM
ROADM
ROADM
ROADM
ROADM
Mixed two degree and multi-degree nodes
1 pair2 pairs
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Optical Hubbing – Dynamic Assignment vs. Manual Patching
Eliminates transpondersEliminates NE’sSingle TID10x reduction in fiberingAutomatic reconfigurationFibering is independent of
Wavelength routingWavelength assignmentWavelength quantity
Allows multiple network deployment scenarios
050
100150200250300350
Number of Fibers to
Interconnect Rings
2 3 4Number of Rings per Hub Site
Optical Hubbing Reduces Fibering
Optical Hub
Back to Back
DWDMDWDM
DWDM
DWDM
Back to Back
Optical Hubbing
ROADM
•Fibering depends directly on wavelength assignment
•100’s of jumpers for a large system
•Fibering done day one.•Wavelengths assigned
dynamically•10’s of jumpers for a large
system
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Technology Breakthrough – Wavelength Selective Switch (WSS)
Single, integrated deviceReplaces optical demultiplexer, multiplexer and optical switchesRemoves unnecessary loss on thru path -> more nodes, more reach, more savingsAny wavelength or any group of wavelengths to any/multiple portsEnables optical hubbing and arbitrary network topologies
DEMUX MUXSwitch
Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications
Optical Fabric Technology Evolution
iPLC Wavelength Selective SwitchWaveblocker
N port DWDM deviceSwitches individual Wavelengths between DWDM portsColorless operationLow through loss – large networks, many nodesCan be mixed with 2-degree fabrics on a network basis
2 port DWDM deviceBlocks individual wavelengths on through pathOther components perform wavelength add/dropUsed in Broadcast and Select Architectures
1xN WSS1xN WSSWaveBlockerWaveBlocker
2 port DWDM + N wavelength port deviceSwitches individual wavelengths to single client portsLow through loss – large networks, many nodesComplex cascading required for multi-degree solutions
Integrated PLCIntegrated PLC
λΝ
West East
2-degree solution 2-degree solution
West East West East
Client ports North SouthClient
Multi-degree solution
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Remote Touchless Service Activation –Revolutionizes Service Velocity
First-generation DWDMMultiple site visitsManual patching for through circuitsManual power balancingLimited service velocity
Touchless provisioningSite visits at service edge onlyAutomated SONET & wavelength provisioningOperational simplicityQuantum leap in service velocity
1
2
3 4
5
6
7
8
910
11
1
Site visits only for service card installation.
Fujitsu-pioneered technology
2ROADM ROADM ROADM
ROADM ROADM
“In one small region, we would have to do 30,000 individual fiber jobs without using ROADMs,” “…
transition to Ethernet becomes easier with a ROADM infrastructure because we can react
quickly.” G. Keith Cambron, SVP of AT&T labs at OFC 2006.
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Automatic Power Balancing
Maintains equal channel output power in face of wavelength assignment/rearrangement/network failureEnables software provisionable wavelength add/drop/thru and reconfigureNo manual adjustments anywhere
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
-2 0 2 4 6 8time(ms)
rela
tive
pow
er (r
.u.)
40ch 1ch
Conventional AGC technology
New technology
Fujitsu Technology
Fujitsupatentedtechnology
All wavelength power levels equal
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Automating Control and Management
GMPLS enabled topology discoveryPopulates EMS database for assured inventory trackingVerifies fiber connectivityCraft user sees whole network easily
Circuit provisioning optionsPoint and click from EMSActivated from EMS with explicit route – signaled using GMPLSActivated from EMS, computed route using GMPLS
Circuit tracking with GMPLSNetwork element layer understands end to end circuit viewSimplifies troubleshooting and alarm correlation
ROADMROADMROADM
ROADM
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Summary
Optical Networking provides substantial value for R&E applications
Transparency, distance, capacity, automationOptical networking surpasses the simplicity of SONET networking
Elimination of manual adjustmentsZero-lambda turnupIn-service wavelength additions to spans, ringsIn-service addition of nodes to ringsIn-service addition of rings and spurs to networks
Network automation uniquely enabled byOptical HubbingAuto-adjusting amplifiersTunable componentsGMPLS control plane and EMS
Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications
Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications
FLASHWAVE® 7500 ROADM One Platform - Three Powerful Configurations
FLASHWAVE 7500 core 40 channels WSS ROADM, 8-degree HubbingBest-in-Class transmission performance
• <= 24 nodes, <= 1000 km ring size, without OEOActive, non-bandedDynamic, self-tuning optical networkCommon Transponders and SoftwarePerfect for metro & regional applications
FLASHWAVE 7500 small system 32 Channel FOADM and ROADM19” shelf; 19” & 23” rack mounted option
• <= 16 nodes, 800km ring size without OEOActive, non-banded, self-tuningCommon Transponders and SoftwareCompact, low cost Metro/Edge applications
FLASHWAVE 7500 extension system Lower-cost, smaller capacity FLASHWAVE 7500 Extension
• Perfect for Pt - Pt spurs or extensions• Combine with Passive Coupler and Amp where needed• Common Optical Line Cards (ie Transponders) and OLC shelf
Fully featured
Cost optimized
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FLASHWAVE® 7500 - Easy Operations Throughout Ownership Lifecycle
Design and engineeringEngineer the network once!Grow subtended rings/arcs as needed with no up-front investment or back-end penaltyNo manual adjustmentsNo hardware changeoutsNo wavelength restrictions
Installation and turn-upCabling wizardAuto in-service plug-in unitsNo manual attenuators to adjustPatented zero-lambda turn-upAuto provisioning of network-side through paths and optical supervisory channel (OSC)
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FLASHWAVE® 7500 - Easy Operations Throughout Ownership Lifecycle
Provisioning and reconfigurationNo readjustment of Patented, Self-Tuning amplifiers.Add circuits like you do with SONET Self-tuning amplifiersAdd/remove lambdas with no power balancing or truck rollsAdd/remove nodes in-serviceAdd rings/arcs to hub nodes in serviceTelcordia™ flow-throughNETSMART 1500 EMS point and click A-Z provisioningGMPLS Control Plane Signaled provisioningFull-band tunable transponders allow wavelength selection after card installation