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How does light travel through the optic fiber without escaping when it is bent?
Wiki User
∙ 11y ago
Light stays inside an optical fibre due to the differing density of the glass and the air. The light enters the fibre at a reasonably shallow angle and all the light is bent back within the fibre when it hits the side. This is called "Total internal reflection". The amount the light is bent is greater than the angle that it hits the edge. This describes multi mode fibre better than single mode fibre. Single mode fibre has a variable density of glass causing this total internal reflection to ocor deep within the fibre in the centre, greatly narrowing the light paths diameter this in turn reduces the total number of light propagation paths available. the end result is the pulses of light ar distorted less allowing for more pulses in less time and therefore more bandwidth. 10Gbit/s is now commonplace in a single fibre over 10s or even hundreds of kilometres. And finally if you bend the fibre the light leaks out. engineers do this to see a red flashing light they shine down the fibre.
Wiki User
∙ 11y ago
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The laser shines through the fiber optic cable because the edge of the inside of the cable can act as a mirror. This is called internal reflection.
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Can light travel through the core of a fiber optic cable?
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yes. fiber provide bulk to the food moving along the alimentary canal. It helps in peristalsis occurring in the walls of gut. I think its enough :)
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The optical fiber can be used both as unidirectional and bidirectional. The main application of optical fiber is in long-distance links, so there exists no need to employ them as unidirectional. For each direction different wavelengths are used to modulat the signals. At the same time many bidirectional signals can travel through the same optical fiber.
Light travels through a thin glass fiber?
fiber optics
