Usage of light in optical fibres, in medical uses and telecommunications
- Endoscopes are used to get the images of hollow organs by sending a beam of light through optical fibres. In an endoscope there are two bundles of very narrow optical fibres. The illumination bundle carries the light to the object being studied, and the image bundle carries back reflected light to provide the image.
- Optical fibres are increasingly being used to replaced coaxial cables, the messages being converted into pulses of light rather than as radio waves. Since the frequency of light (~107 bits s-1) is much higher than the radio waves (~102 bits s-1), optical fibres are capable of handling vast amounts of information.