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The erbium-doped fibre amplifier is demonstrated

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Groups at the University of Southampton and at AT&T Bell Laboratories independently demonstrated practical low-noise optical amplification in erbium-doped fibre in the 1.55 µm band. The effect on submarine systems was immediate in principle and took a decade in practice: a cable could now be amplified rather than regenerated, which meant its capacity was no longer fixed by the electronics buried on the seabed and could be raised later by changing equipment on shore.

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Assembled from 24 blocks · 1 evidence · 11 related

  1. Story
  2. Groups at the University of Southampton and at AT&T Bell Laboratories independently demonstrated practical low-noise optical amplification in erbium-doped fibre in the 1.55 µm band. The effect on submarine systems was immediate in principle and took a decade in practice: a cable could now be amplified rather than regenerated, which meant its capacity was no longer fixed by the electronics buried on the seabed and could be raised later by changing equipment on shore.
  3. Knowledge
  4. The submarine optical repeater
  5. The erbium-doped fibre amplifier
  6. David Payne
  7. The erbium-doped fibre amplifier is demonstrated
  8. Connections
  9. The erbium-doped fibre amplifier
  10. David Payne
  11. The submarine optical repeater
  12. The submarine optical repeater
  13. David Payne
  14. The erbium-doped fibre amplifier is demonstrated
  15. The erbium-doped fibre amplifier
  16. The erbium-doped fibre amplifier is demonstrated
  17. The submarine fibre-optic cable
  18. Cable power feed equipment
  19. The erbium-doped fibre amplifier
  20. TAT-1 opens with 36 telephone circuits
  21. The erbium-doped fibre amplifier is demonstrated
  22. TAT-8, the first transoceanic fibre cable, enters service
  23. Evidence
  24. Supports the 1987 demonstration of practical low-noise erbium-doped fibre amplification by two independent groups, and its consequence for submarine systems — optical amplification instead of electronic regeneration. V55 verification basis: NOT read. The retrieved results attributed the 1987 demonstration to the Southampton group and to Bell Labs and named the researchers; the journal volume and page numbers are deliberately omitted because they were not checked, and the priority question between the two groups is not adjudicated here.
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/atlas?object=EVT_EDFA_DEMONSTRATED_1987&experience=EVT_EDFA_DEMONSTRATED_1987