Fibre optics and endoscopy (A-level only)
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Trapping light in a fibre

Trapping light in a fibre

Textbook diagram of an optical fibre showing a high-index core, lower-index cladding, and a light ray zig-zagging by total internal reflection with labels for the boundary, normal, and angles An optical fibre is a very thin strand of glass or plastic that can guide light through bends. The light stays inside because it repeatedly reflects from the boundary between two materials.

Fibre optics and endoscopy (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Fibre optics and endoscopy (A-level only)