simplicity and automation in reconfigurable … and automation in reconfigurable optical networks...

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications

Simplicity and Automation inReconfigurable Optical Networks

Dr. Tom McDermottDirector, CTO Office, Fujitsu

[email protected]


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


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


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


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


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


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


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.


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


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


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


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


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)


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

simplicity and automation in reconfigurable … and automation in reconfigurable optical networks...

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