2. Photonic Components Rob Johnson Standards Engineering Manager 10th July 2002 Rob Johnson Standards Engineering Manager 10th July 2002

3. Standards Engineering 3 Market Drivers Reducing System Cost –Agile transparent networks –‘Smart’ products Delivering Lower Component Cost –Modularity –Higher levels of integration –Innovation Reducing System Cost –Agile transparent networks –‘Smart’ products Delivering Lower Component Cost –Modularity –Higher levels of integration –Innovation

4. Standards Engineering 4 Today’s Long-Haul Network Opaque and Static Campus Network Campus Network Sonet ADM Sonet ADM Inter-Office Ring Sonet ADM Sonet ADM Amp Electrical Cross-connect Electrical Cross-connect DCM Sonet ADM Sonet ADM To POP To POP Long-Haul Point to Point Long-Haul Point to Point Small City

5. Standards Engineering 5 Tomorrow’s Long-Haul Network Agile and Transparent Campus Network Campus Network Inter-Office Ring To POP To POP Long-Haul Point to Point Long-Haul Point to Point Small City Tunable Filter Tunable Filter 12 Add/Drop 12 Add/Drop DCM OXC Amp 80 Add/Drop 80 Add/Drop Drop to POP Drop to POP Add from POP Add from POP

6. Standards Engineering 6 Products Needed to Enable Agile Transparency Optical transport technology that extends the distance between optical to electronic conversions Optical switching technology that adds little cost or signal degradation to pass through traffic Optical transport technology that extends the distance between optical to electronic conversions Optical switching technology that adds little cost or signal degradation to pass through traffic

7. Standards Engineering 7 Extending the Distance Between Nodes: Raman Amplifiers Distributed Raman Amplifier Raman Pump

8. Standards Engineering 8 Extending the Distance Between Nodes: Dispersion Compensators 100% dispersion slope compensation modules for G.652, G.655 and other singlemode fibres 1st order compensation - pulse reshaping 2nd order compensation - slope compensation Wavelength (nm) Dispersion (ps/nm.km)

9. Standards Engineering 9 Adding Little Cost or Signal Degradation to Pass Through Traffic: OXC OXC

10. Standards Engineering 10 Adding Little Cost or Signal Degradation to Pass Through Traffic: OADM 80 Add/Drop 80 Add/Drop

11. Standards Engineering 11 ‘Smart’ Products - Dynamically Reconfigurable DCE Added wavelengths are coupled with equalized channels to form uniform spectrum Dynamic Channel Equalizer Supports ‘Broadcast and Select’ technology

12. Standards Engineering 12 Modularity - Platform Amplifiers Standard mechanical platforms enable a reduction in design cycle Provides increased speed to market and reduced development costs Platforms still meet all important customer requirements Standard mechanical platforms enable a reduction in design cycle Provides increased speed to market and reduced development costs Platforms still meet all important customer requirements

13. Standards Engineering 13 Higher Levels of Integration - Variable Gain Amplifiers EDFAs for Metro Applications –Variable gain amplifiers optimized for use in dynamic networks –Embedded control electronics to deal with transients –Deployed in both metro core and regional networks –Enable dynamic wavelength provisioning –High output power and low noise EDFAs for Metro Applications –Variable gain amplifiers optimized for use in dynamic networks –Embedded control electronics to deal with transients –Deployed in both metro core and regional networks –Enable dynamic wavelength provisioning –High output power and low noise Access Ring Access Ring Inter-Office Ring Amp

14. Standards Engineering 14 Higher Levels of Integration - Variable Gain Amplifiers Amplifiers for Long-Haul / Ultra Long-Haul Applications –Embedded electronics and software –Sophisticated control capability with rapid transient response –Improved bit error rate in dynamic networks –High power, wide bandwidth, low noise, low ripple –Both EDFA and distributed Raman amplifier designs Amplifiers for Long-Haul / Ultra Long-Haul Applications –Embedded electronics and software –Sophisticated control capability with rapid transient response –Improved bit error rate in dynamic networks –High power, wide bandwidth, low noise, low ripple –Both EDFA and distributed Raman amplifier designs

15. Standards Engineering 15 Lower Costs Through Innovation - SOA’s Semiconductor Optical Amplifier (SOA) –Uses advanced semiconductor processing techniques –Optimized for space - critical, cost sensitive applications –Amplifies single/multiple channels in add-drop or metro applications –Complements EDFAs in the metro ring Semiconductor Optical Amplifier (SOA) –Uses advanced semiconductor processing techniques –Optimized for space - critical, cost sensitive applications –Amplifies single/multiple channels in add-drop or metro applications –Complements EDFAs in the metro ring Campus Network Campus Network Access Ring Access Ring Inter-Office Ring

16. Standards Engineering 16 Lower Costs Through Innovation - Mux/Demux Packaging technology for Mux/Demux –Reduced space and cost for metro, access and long-haul –Combines the functionality of two 3-port devices with the same spectral properties into one package –50% component reduction and reduced footprint Packaging technology for Mux/Demux –Reduced space and cost for metro, access and long-haul –Combines the functionality of two 3-port devices with the same spectral properties into one package –50% component reduction and reduced footprint Multiplexer Demultiplexer Two Multiplexer & Demultiplexer One

17. Standards Engineering 17 Summary Networks are moving to optical transparency to provide cost effective solutions Photonic components will continue to drive optical transparency TransmittersOptical Amplifier Dispersion Compensation Module Optical Switching Module Receivers MultiplexerPump Laser Cabled Optical Fiber Optical Add/Drop Switch Module Demultiplexer Connectors, Cable Assemblies, Optical Hardware