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Interconnect Solutions for the Optical Backplane Era Richard C. A. Pitwon

Interconnect Solutions for the Optical Backplane Era Richard C. A. Pitwon Senior Photonics Engineer. ECOC 2005, Glasgow September ’05. Photonics Research & Development Showcase. Overview. High Speed Parallel Optical Transceiver. Optical Backplane Connector.

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Interconnect Solutions for the Optical Backplane Era Richard C. A. Pitwon

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  1. Interconnect Solutions for the Optical Backplane Era Richard C. A. Pitwon Senior Photonics Engineer ECOC 2005, Glasgow September ’05

  2. Photonics Research & Development Showcase Overview High Speed Parallel Optical Transceiver Optical Backplane Connector Optical Waveguide Interface Coupling Method Novel Mechano-Photonic Interface Design High Precision Waveguide Alignment Method Proof-of-Concept Demonstrator Rig 2ECOC 2005| Richard Pitwon

  3. Parallel Optical Transceiver Overview Quad Parallel Optical Transceiver Optical Transceiver Circuit 10 Gb/s per duplex channel Daughtercard Pluggable Output Signal Characterisation @ 10.3 Gb/s Jitter ~30 ps Flexible Laminate PCB Mechano-Photonic Coupling Interface Patent Filed 3ECOC 2005| Richard Pitwon

  4. Photonic Interface Overview Optical Transceiver Circuit Raw Die Bond Wire Attachment Mechano-Photonic Interface Custom GRIN Lens Holder 1x4 VCSEL Array High Precision Visual Alignment of GRIN Lens Array to Active Areas Source: ULM Photonics GmbH 1x4 PIN Array Source: Microsemi Corporation Mechanical Alignment Structures 1x12 GRIN Microlens Array Multi-Terminal (MT) Compliant Source: GRINTech GmbH 4ECOC 2005| Richard Pitwon

  5. Connector Mechanism Overview Metallic Housing Optical Transceiver Circuit Daughtercard Pluggable Mechano-Photonic Interface Optical PCB Connector Cam Lever Mechanism Coarse Alignment Mechanism Primary Function: Elevation and Retraction of Photonic Interface 5ECOC 2005| Richard Pitwon

  6. www.exxelis.com Waveguide Alignment Method Overview Low Cost Precision Assembly Method Optical Transceiver Circuit Lithographically Patterned Mechanical Alignment Features Mechano-Photonic Interface Optical PCB Connector Multi-Terminal (MT) Compliant Receptacle Waveguide Alignment Method Accuracy measured to within +/- 3 µm Successful Coupling of Mechano-Photonic Interface to Optical PCB 6ECOC 2005| Richard Pitwon

  7. Optical Backplane Engagement 7ECOC 2005| Richard Pitwon

  8. Prototype Demonstrator Overview 2 Pluggable Daughtercards and Connectors Polymer Waveguide Optical PCB Length: 10 cm Passive Electrical Backplane Optical Transceiver Circuit Mechano-Photonic Interface Optical PCB Connector Waveguide Alignment Method Proof-of-Concept Demonstrator 8ECOC 2005| Richard Pitwon

  9. Test and Characterisation Characterisation of Optical Connector Coupling to Waveguide with 10.3 Gb/s 850 nm Optical Signal Overview Optical Transceiver Circuit Mechano-Photonic Interface Reference Signal – No Waveguide Jitter 0.34 UI Relative Loss 0 dB Optical PCB Connector Waveguide Alignment Method 10 cm Waveguide with Isapropanol Jitter 0.36 UI Relative Loss 4.5 dB Proof-of-Concept Demonstrator Test & Characterisation 10 cm Waveguide – Diced and Polished Jitter 0.56 UI Relative Loss 6.9 dB Driven with 10 GbE LAN (10.3 Gb/s) traffic 10 cm Waveguide – Diced Only Jitter 0.89 UI Relative Loss 7.9 dB Passed 4 hour soak test with no errors 9ECOC 2005| Richard Pitwon

  10. Exposition • Demonstrator Exhibition Sites: • ECOC 2005, Glasgow • Photonex 2005, Stoneleigh, Coventry Overview Optical Transceiver Circuit Mechano-Photonic Interface Optical PCB Connector Waveguide Alignment Method Proof-of-Concept Demonstrator Test & Characterisation Exposition 10ECOC 2005| Richard Pitwon

  11. Acknowledgments Overview Optical Waveguide Fabrication: Navin Suyal Exxelis Ltd Kelvin Campus, West of Scotland Science ParkGlasgow, G20 0TH Optical Transceiver Circuit Mechano-Photonic Interface Optical PCB Connector www.exxelis.com Waveguide Alignment Method Polymer Waveguide Characterisation: Ioannis Papakonstantinou David R. Selviah Optical Systems and Devices Group UCL London Proof-of-Concept Demonstrator Test & Characterisation Exposition Special Thanks to Frank Tooley (Photonix, Glasgow), EPSRC and DTI Acknowledgments 11ECOC 2005| Richard Pitwon

  12. Thank You for Your Attention! Xyratex Team Steve ThompsonCTO Dave MilwardProject Manager Ken HopkinsHardware Architect Richard C. A. Pitwon Senior Photonics Engineer rpitwon@xyratex.com Xyratex Hampshire P09 1SA United Kingdom www.xyratex.com 12ECOC 2005| Richard Pitwon

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