by Ciro Santilli (@cirosantilli, 36)
These are pretty cool, they are basically a laser
This one was a huge advance it seems.
Video 1.
Erbium-doped fiber amplifier by Millennium Technology Prize
. Source.

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  1. Optical amplifier
  2. Fiber optic equipment
  3. Optical fiber
  4. Light
  5. Photon
  6. Elementary particle
  7. Subatomic particle
  8. Standard Model
  9. Particle physics
  10. Physics
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