Fiber Optic

Fiber-optic communications find their basis on a physical principle of light within a glass apparatus is capable of carrying significantly more information over longer distances than for example electrical signals can carry in a coaxial of copper conduit or radio waves via a wireless medium. Today’s glass fiber with its purity , with an improved electronics system, permits fiber optics to transfer light signals that have been digitized hundreds of miles with no need for amplification. Having almost no losses in transmission, high bandwidth and very low interference, using optical fiber is close to perfect choice for a transmission medium.

fibre optic

What is an optical fiber?

It is a clear, see-through and flexible fiber made of glass, plastic or silica, with a thickness little above a strand of hair. It works as a waveguide to transfer light from one side of the fiber to other. Optical fibers that are mostly used in communications, allow transmission at long distances and high bandwidths much more than wire cables. Fibers are not affected by electromagnetic disturbances and data loss is much smaller.

fibre optic wire structure

Fibers have many other uses and applications for example: for illumination, projecting images, fiber lasers and sensors. Optical fibers are usually made up of a transparent core encompassed by a see-through covering material with low refraction index. Fibers that support many crosswise modes are called multi-mode fibers, and ones that support a single one are single-mode fibers.Multi-mode fibers with a wider diameter are used for short-distance communication and single-mode fibers are mostly used for longer connections.

fibre optic working principle

Joining optical fiber is more complicated than joining electrical cable. The ends of the fibers must be correctly spliced one with the other and their cores must match perfectly, then they are fused together using heat. There are also special connectors to temporarily connect fiber ends. Optical fibers are commonly used in telecommunication, and also with creating a computer network due to it’s flexibility and the ease of bundling as cables.

fibre optic fastness

The light signals going through each channel of the fiber can go up to 111 Gbit/s, where 40 Gbit/s is common in use today. A transmission of 400 Gbit/s within a channel was established by scientists in June, 2013.Each fiber can contain a multitude of channels, where each has it’s own wavelength of light. A standard Ethernet cable, with a capacity from 100 Mbit/s to 1 Gbit/s speeds is mostly used in office networks because even one fiber of it has a higher capacity than a regular electrical cable, another advantage is also the immunity to electrical obstructions. They are resistant to lightning, explosive fumes so they can keep communications equipment safe in many dangerous areas and are much more difficult if not impossible to tap.

fibre optics

Post a Comment

0 Comments