Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Simplicity and Automation in Reconfigurable Optical Networks Dr. Tom McDermott Director, 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 distances 100Gb/s to Tb/s of capacity Protocol transparency Ethernet, SONET, Fiber Channel Protocols Lowest latency possible Automation Rapid circuit establishment and re-arrangement University Research Laboratory Research Laboratory Radio Astronomy High Speed Grid Computing Uncompressed HD Video Antenna Site

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Optical Networking Evolution WDM ROADM WDM ROADM 0-300km 2.5G - 160G 0-600km 10G-400G km 10G - 1.6T Simplicity Flexibility/ Distance Capacity 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

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Optical Hubbing: Dynamic Networking Across any Topology Multiple, small rings Additional Fiber pairs required Costly OEO between rings Manual Fibering Between Rings Non-integrated spurs Single growable structure Only 1 fiber pair between any two sites No OEO between rings Automated connectivity between rings Integrated spurs 2 pairs ROADM Two-degree nodes Mixed two degree and multi-degree nodes 1 pair

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Optical Hubbing – Dynamic Assignment vs. Manual Patching Eliminates transponders Eliminates NE’s Single TID 10x reduction in fibering Automatic reconfiguration Fibering is independent of Wavelength routing Wavelength assignment Wavelength quantity Allows multiple network deployment scenarios Number of Fibers to Interconnect Rings 234 Number of Rings per Hub Site Optical Hubbing Reduces Fibering Optical Hub Back to Back 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

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Technology Breakthrough – Wavelength Selective Switch (WSS) Single, integrated device Replaces optical demultiplexer, multiplexer and optical switches Removes unnecessary loss on thru path -> more nodes, more reach, more savings Any wavelength or any group of wavelengths to any/multiple ports Enables optical hubbing and arbitrary network topologies DEMUX MUXSwitch

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Optical Fabric Technology Evolution N port DWDM device Switches individual Wavelengths between DWDM ports Colorless operation Low through loss – large networks, many nodes Can be mixed with 2- degree fabrics on a network basis 2 port DWDM device Blocks individual wavelengths on through path Other components perform wavelength add/drop Used in Broadcast and Select Architectures 1xN WSS WaveBlocker 2 port DWDM + N wavelength port device Switches individual wavelengths to single client ports Low through loss – large networks, many nodes Complex cascading required for multi-degree solutions Integrated PLC  West East 2-degree solution West EastWest East Client ports North South Client Multi-degree solution Waveblocker iPLCWavelength Selective Switch

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Remote Touchless Service Activation – Revolutionizes Service Velocity First-generation DWDM Multiple site visits Manual patching for through circuits Manual power balancing Limited service velocity Touchless provisioning Site visits at service edge only Automated SONET & wavelength provisioning Operational simplicity Quantum leap in service velocity Site visits only for service card installation. Fujitsu-pioneered technology 2 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.

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Automatic Power Balancing Maintains equal channel output power in face of wavelength assignment/rearrangement/network failure Enables software provisionable wavelength add/drop/thru and reconfigure No manual adjustments anywhere All wavelength power levels equal Fujitsu patented technology Fujitsu Technology

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Automating Control and Management GMPLS enabled topology discovery Populates EMS database for assured inventory tracking Verifies fiber connectivity Craft user sees whole network easily Circuit provisioning options Point and click from EMS Activated from EMS with explicit route – signaled using GMPLS Activated from EMS, computed route using GMPLS Circuit tracking with GMPLS Network element layer understands end to end circuit view Simplifies troubleshooting and alarm correlation ROADM

Fujitsu Proprietary and Confidential All Rights Reserved, ©2006 Fujitsu Network Communications Summary Optical Networking provides substantial value for R&E applications Transparency, distance, capacity, automation Optical networking surpasses the simplicity of SONET networking Elimination of manual adjustments Zero-lambda turnup In-service wavelength additions to spans, rings In-service addition of nodes to rings In-service addition of rings and spurs to networks Network automation uniquely enabled by Optical Hubbing Auto-adjusting amplifiers Tunable components GMPLS control plane and EMS

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