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Free Space Optics

Free Space Optics. The Bright Future of Wireless Communications. Lasers in Free Space?. What is FSO?. Line of sight free space (wireless) transmission technology Utilizes light (laser) to transfer data Delivers high speed secure connection

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Free Space Optics

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  1. Free Space Optics The Bright Future of Wireless Communications

  2. Lasers in Free Space?

  3. What is FSO? • Line of sight free space (wireless) transmission technology • Utilizes light (laser) to transfer data • Delivers high speed secure connection • Offers economical solution (low power consumption, no wide radiation)

  4. Optical fibre TX optics Laser transmitter Receiver Diode RX Optics Optical fibre Optical Transmission Fibre Optic TX Fibre Optic Transceiver RX

  5. TX optics Laser transmitter Receiver Diode RX Optics Optical Transmission Free Space TX Transmitter Free Space Optics Receiver RX

  6. Why Free Space Optics? • License-free operation • High bandwidth • High data security • No interference issues • Rapid deployment/re-deployment • Excellent price/performance (low cost per bit)

  7. Link Dynamic Range Power Margin (Dynamic Range) Budget Receiver sensitivity Distance

  8. Multibeam Systems • To increase power • To Compensate building swaying • To introduce redundancy

  9. Eye Safety 7 mm Human eye Optical apertures/surfaces TX optics: 1962 mm2 Footprint: 196250 mm2 Human eye: 38 mm2 NOHD Values 1.8 m – 85 m

  10. Birds, UFO’s,… Chance to block the beam < 10-12 Chance for UFO…?

  11. Competitive Analysis • Fibre • Leased Line • Radio • Microwave

  12. Alternative To Fibre • Cost of installation • Speed of installation • Flexibility

  13. Alternative To Leased Line • Bandwidth • Cost of ownership vs. leasing cost

  14. Alternative To ISM Band Radio • Bandwidth • Reliability • Security

  15. Alternative To Microwave • Licensing • Speed • Price • Difficulty of installation

  16. Application Summary Laser Link -High Speed -No frequency license -Secure -Rapid deployment • Microwave • Frequency license • Speed • Microwave • Frequency license • Speed Security? Headquarters Branch Office • Fiber Optic Cable • Expensive • Long installation time

  17. Typical Users • GSM/UMTS • Corporate telephone • Telco networks • Corporate LAN • Internet • Temporary Applications • Backup links

  18. Corporate Networks - LAN 100 Mbps LAN A LAN B

  19. Corporate Networks - Telephone 2 Mbps (E1) Local subscribers Local subscribers Telephone Exchange Telephone Exchange

  20. Carriers – Last Mile Access • Fat pipe to corporate users • Support residential areas • Set up alternative routes • Expand bandwidth

  21. Carriers – Last Mile Access Existing Network Corporate Users Residential Area Industrial Areas

  22. Mobile Operators – BTS Access 2 Mbps – 34 Mbps (E1-E3) Base Station Controller (BSC) Base Transmitter Station (BTS)

  23. ISP’s – Metro Area Networks Point of Presence (POP) Residential Residential Corporate Users Residential

  24. Temporary Installations • Disaster recovery • Satisfy prompt or temporary needs • Office leasing (corporate) • Rapid network expansion (Telco)

  25. Backup Links • To provide 24 hours a day availability • High speed secure connection • Alternative data path

  26. Market Analysis • Customer Base • Market Expectations • Reasons

  27. Customer Base • Carriers and Telco’s • Landline and wireless services • Last mile access • Internet Service Providers • Companies and corporations of all size • Campuses • Hospitals • Factories • Offices

  28. Market Expectations Merrill Lynch: FreeSpace Optics 15 May 2001

  29. Need for Bandwidth • Convergence in communication • Increasing number of subscribers • Demanding wireless apps (3G, UMTS) • Internet boom

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