Optical Fibres :
Optical Fibres When a wave crosses a boundary between two media, it may be either refracted or totally internally reflected (TIR).
Optical Fibres :
If:
then TIR can occur.
This can only happen when a wave travels from a higher to a lower refractive index: Optical Fibres
Optical Fibres :
This means that a ray of light can be confined within one material, provided any angle of incidence is always greater than the critical angle. Optical Fibres
Optical Fibres :
Optical fibres are designed to do just this; they guide light from one place to another. Optical Fibres
Why use optical fibres? :
They allow for extremely fast data transfer as the information carrier travels at the speed of light.
This process is less subject to noise and data corruption than electrically based data transfer. Why use optical fibres?