A fiber optic transmission cable is fundamentally a networking cable which comprises of strands of glass fibers in an insulated coating that carry light. Just like the copper and aluminum made cable uses electricity to transfer current from one point to another, the fiber optic cable uses the light pulses in achieving the same.


An optical fiber comprise of a cladding layer and a core for the total internal reflection because of their difference in respective refractive index. The cladding is coated with the layer of polyimide or an acrylate polymer, protecting it from damage. The coated fibers have a tough layer made of resin buffer extruded round them forming a cable core. Several sheathing can also be made dependent on the application. Stiff fiber assemblies at times put light absorbing glass in between fibers thus preventing light from leaking out from one fiber and entering another.

There are two types of primary fiber cables; the single mode and the multi-mode fiber cable. The single mode fiber cable use a thin strand of glass and a laser to produce light, whereas the multi-mode fiber cable use light emitting diodes. The single mode cable often use the wave division multiplexing (WDM) technique to increase the level of data traffic to be sent across the strands. The WDM permit light at multiple different wavelength to combine and separate to transmit numerous communication streams through a single light pulse.

How it Works

Fiber optic cable uses light emitting diodes or the small lasers to transmit communication signals from one point to the other by the pulses of light they generate. The strands of glass has a core in between them which act as a light travelling pathway. The core is closely coated with a cladding layer which reflects the light that has entered from the core, inward preventing signal loss. Thus making it easier for light to pass through the corners in the optical cable.

Advantages of a Fiber Optic Cable

This is a modern way of cabling and it has many advantages compared to the traditional copper cabling.

  • The fiber optic cable has higher carrying capacity than the long distance copper cable. The amount of network of bandwidth a fiber cable can transmit largely exceed that of the copper cable with same thickness. A fiber cable is rated 10Gbps, 40Gbps and 100Gbps which are the standard.
  • With an optic cable there is no electric loss, blow outs and shocks. This is because light travels faster in the optic cable in a much longer distance along the bends of the fiber cable and do not lose its strength, thus may not need the signal boosters. This explains why fiber connection is carried over very long distances that is, connecting countries.
  • A fiber cable is less susceptible to the interface and thus do not require any special shielding in protecting it from the electromagnetic disturbance, as compared to the old traditional networking cables.

Applications of fiber cable

Most of the optic cable installation links cities and countries over long distances to help in network deployment. It can as well be installed in our residential places to provide internet. This modern method of network distribution is fast and has limited delays. If you are looking for a modern, effective and reliable networking cable, please don’t look any further than the fiber optics cable. This is the technology of the future.

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