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How Fiber
Optics Work
    S1170155
   Shota Suzuki
Explanation of optical fiber cable

You hear about fiber-optic cables whenever people
   talk about the telephone system, the cable TV
system or the Internet. Fiber-optic lines are strands
of optically pure glass as thin as a human hair that
 carry digital information over long distances. They
 are also used in medical imaging and mechanical
                engineering inspection.
What are Fiber Optics?


Fiber optics (optical fibers) are long, thin strands of
  very pure glass about the diameter of a human
 hair. They are arranged in bundles called optical
cables and used to transmit light signals over long
                      distances.
How Does an Optical Fiber Transmit
             Light?
Suppose you want to shine a flashlight beam down a long,
  straight hallway. Just point the beam straight down the
hallway -- light travels in straight lines, so it is no problem.
  What if the hallway has a bend in it? You could place a
   mirror at the bend to reflect the light beam around the
  corner. What if the hallway is very winding with multiple
bends? You might line the walls with mirrors and angle the
  beam so that it bounces from side-to-side all along the
 hallway. This is exactly what happens in an optical fiber.
Advantages of Fiber Optics


    Why are fiber-optic systems revolutionizing
 telecommunications? Compared to conventional
  metal wire (copper wire), optical fibers are less
 expensive, thinner, higher carrying capacity, less
signal degradation, light signals, low power, digital
                signal, and so on.
How Are Optical Fibers Made?


Now that we know how fiber-optic systems work
  and why they are useful -- how do they make
them? Optical fibers are made of extremely pure
                  optical glass.
Structural explanation of optical fiber
 When light passes from a medium with one index
 of refraction (m1) to another medium with a lower
 index of refraction (m2), it bends or refracts away
from an imaginary line perpendicular to the surface
(normal line). As the angle of the beam through m1
  becomes greater with respect to the normal line,
 the refracted light through m2 bends further away
                     from the line.

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How Fiber Optics Work

  • 1. How Fiber Optics Work S1170155 Shota Suzuki
  • 2. Explanation of optical fiber cable You hear about fiber-optic cables whenever people talk about the telephone system, the cable TV system or the Internet. Fiber-optic lines are strands of optically pure glass as thin as a human hair that carry digital information over long distances. They are also used in medical imaging and mechanical engineering inspection.
  • 3. What are Fiber Optics? Fiber optics (optical fibers) are long, thin strands of very pure glass about the diameter of a human hair. They are arranged in bundles called optical cables and used to transmit light signals over long distances.
  • 4. How Does an Optical Fiber Transmit Light? Suppose you want to shine a flashlight beam down a long, straight hallway. Just point the beam straight down the hallway -- light travels in straight lines, so it is no problem. What if the hallway has a bend in it? You could place a mirror at the bend to reflect the light beam around the corner. What if the hallway is very winding with multiple bends? You might line the walls with mirrors and angle the beam so that it bounces from side-to-side all along the hallway. This is exactly what happens in an optical fiber.
  • 5. Advantages of Fiber Optics Why are fiber-optic systems revolutionizing telecommunications? Compared to conventional metal wire (copper wire), optical fibers are less expensive, thinner, higher carrying capacity, less signal degradation, light signals, low power, digital signal, and so on.
  • 6. How Are Optical Fibers Made? Now that we know how fiber-optic systems work and why they are useful -- how do they make them? Optical fibers are made of extremely pure optical glass.
  • 7. Structural explanation of optical fiber When light passes from a medium with one index of refraction (m1) to another medium with a lower index of refraction (m2), it bends or refracts away from an imaginary line perpendicular to the surface (normal line). As the angle of the beam through m1 becomes greater with respect to the normal line, the refracted light through m2 bends further away from the line.