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Interview Q & A >> Networking >> How Fiber Optic Cable Works?

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How Fiber Optic Cable Works? (Views: 6182)


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An optical fiber (or optical fibre) is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers. Optical fibers are widely used in fiber-optic communications, which permits transmission over longer distances and at higher bandwidths(data rates) than other forms of communications. Fibers are usedinstead of metal wires because signals travel along them with less loss, and they are also immune to electromagnetic interference.Fibers are also used for illumination, and are wrapped in bundles sothey can be used to carry images, thus allowing viewing in tightspaces. Specially designed fibers are used for a variety of otherapplications, including sensors and fiber lasers.

Light is kept in the core of the optical fiber by total internal reflection. This causes the fiber to act as a waveguide. Fibers which support many propagation paths or transverse modes are called multi-mode fibers (MMF), while those which can only support a single mode are called single-mode fibers (SMF). Multi-mode fibers generally have a larger core diameter, and areused for short-distance communication links and for applications wherehigh power must be transmitted. Single-mode fibers are used for mostcommunication links longer than 550 metres (1,800 ft).

Submitted By: Anonymous | Created On: 7/19/2009 3:47:56 PM

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optical fiber core ,cladding and outer jacket. Core having higher refractive index than refractive index of cladding for satisfying total internal reflection

Submitted By: sudhakar | Created On: 6/18/2012 11:51:00 PM

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