10.8.8 How Does Light Remain Trapped Inside An Optical Fiber?
Explains total internal reflection, refractive index, numerical aperture, acceptance angle, and why optical fibers can guide light over hundreds of kilometers.
- What Is an Optical Fiber?
- What Is Meant by the Refractive Index?
- Why Does Light Bend When It Enters Another Material?
- What Is Total Internal Reflection?
- Why Doesn't the Light Escape After Many Reflections?
- What Is the Numerical Aperture?
- What Happens If the Fibre Is Bent?
- Why Can Optical Fibres Carry Signals Over Such Long Distances?
- Where Are Optical Fibres Used?
- Why Has Optical Fiber Revolutionised Communications?
- What Should You Remember?