Outline History of lightwave undersea cable systems

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Outline History of lightwave undersea cable systems

  1. 1. Outline <ul><li>History of lightwave undersea cable systems </li></ul><ul><li>Optical amplifier technologies </li></ul><ul><li>Examples of lightwave undersea cable networks </li></ul><ul><ul><li>TPC-5CN </li></ul></ul><ul><ul><li>APCN </li></ul></ul><ul><ul><li>FLAG </li></ul></ul><ul><ul><li>JIH </li></ul></ul><ul><li>Future technologies </li></ul><ul><ul><li>WDM </li></ul></ul><ul><ul><li>Optical Soliton </li></ul></ul>
  2. 2. Transmission capacity of the undersea cable systems in the Pacific ocean
  3. 3. Lightwave undersea cable systems in the Pacific ocean
  4. 4. Major system parameters of TPC-3 and TPC-4 system
  5. 5. Transmission loss characteristics of the SiO 2 based optical fiber
  6. 6. Basic system configuration of the lightwave undersea cable system
  7. 7. Block diagrams of the repeater circuits
  8. 8. Reliability issues of the optical repeater
  9. 9. Outline <ul><li>History of lightwave undersea cable systems </li></ul><ul><li>Optical amplifier technologies </li></ul><ul><li>Examples of lightwave undersea cable networks </li></ul><ul><ul><li>TPC-5CN </li></ul></ul><ul><ul><li>APCN </li></ul></ul><ul><ul><li>FLAG </li></ul></ul><ul><ul><li>JIH </li></ul></ul><ul><li>Future technologies </li></ul><ul><ul><li>WDM </li></ul></ul><ul><ul><li>Optical Soliton </li></ul></ul>
  10. 10. Principle of the Erbium-doped fiber optical amplifier (EDFA)
  11. 11. Basic configuration of the EDFA
  12. 12. Example of electro-optic repeater and EDFA <ul><li>Electro-optic repeater </li></ul>EDFA
  13. 13. Technical difficulties of the lightwave undersea systems using EDFA repeater <ul><li>Optical noise (ASE) accumulation </li></ul><ul><li>Chromatic dispersion of the transmission fiber </li></ul><ul><li>Nonlinearity of the transmission fiber </li></ul><ul><li>Polarization dependent factors </li></ul><ul><ul><li>Polarization dependent loss (PDL) </li></ul></ul><ul><ul><li>Polarization hole burning (PHB) </li></ul></ul><ul><ul><li>Polarization mode dispersion (PMD) </li></ul></ul>
  14. 14. Test bed of the lightwave undersea systems using EDFA repeater
  15. 15. Outline <ul><li>History of lightwave undersea cable systems </li></ul><ul><li>Optical amplifier technologies </li></ul><ul><li>Examples of lightwave undersea cable networks </li></ul><ul><ul><li>TPC-5CN </li></ul></ul><ul><ul><li>APCN </li></ul></ul><ul><ul><li>FLAG </li></ul></ul><ul><ul><li>JIH </li></ul></ul><ul><li>Future technologies </li></ul><ul><ul><li>WDM </li></ul></ul><ul><ul><li>Optical Soliton </li></ul></ul>
  16. 16. TPC-5CN Cable Route (Trans-Pacific Cable 5 Network)
  17. 17. APCN Cable Route (Asia-Pacific Cable Network)
  18. 18. FLAG Cable Route (Fiberoptic Link Around the Globe)
  19. 19. Major system parameters of OS-A system
  20. 20. JIH Cable Route (Japan Information Highway)
  21. 21. Major system parameters of JIH cable (tentative) <ul><li>Key technology </li></ul><ul><ul><li>Wavelength division multiplexing (WDM) </li></ul></ul><ul><ul><li>100Gbit/s = N wavelength  10 or 5 or 2.5Gbit/s </li></ul></ul>
  22. 22. Outline <ul><li>History of lightwave undersea cable systems </li></ul><ul><li>Optical amplifier technologies </li></ul><ul><li>Examples of lightwave undersea cable networks </li></ul><ul><ul><li>TPC-5CN </li></ul></ul><ul><ul><li>APCN </li></ul></ul><ul><ul><li>FLAG </li></ul></ul><ul><ul><li>JIH </li></ul></ul><ul><li>Future technologies </li></ul><ul><ul><li>WDM </li></ul></ul><ul><ul><li>Optical Soliton </li></ul></ul>
  23. 23. Explanation of Wavelength Division Multiplexing (WDM) technology
  24. 24. Explanation of optical soliton technology
  25. 25. Principle of recirculating loop experiment
  26. 26. Experimental setup of 5Gbit/s, 22WDM, 9500km recirculating loop experiment
  27. 27. Snap shot of the WDM experiments
  28. 28. Transmission performance of 5Gbit/s, 22WDM, 9500km recirculating loop experiment
  29. 29. Experimental setup of 20Gbit/s, 8100km straight line optical soliton transmission
  30. 30. Transmission performance of 20Gbit/s, 8100km straight line optical soliton transmission
  31. 31. Conclusion <ul><li>Technologies of the global lightwave undersea cable networks are reviewed. </li></ul><ul><li>WDM and soliton are two key technologies of future undersea cable networks. </li></ul><ul><li>100Gbit/s class lightwave communication system is already available under the laboratory condition, and will be available for the commercial use in early 21st century. </li></ul>

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