Fiber Optic Data Cables
The development of fiber optics is a direct result of the growing deman for fast data transmission between different terminals. Given its immunity to electromagnetic interference and its characteristics in terms of signal transmission, fiber optics are the ideal support for high-speed data transmission.
The optical fiber is a very thin glass cable transmitting light signals on which digital data is carried. The transmission factor for fiber optics, expressed in decibels (dB), gives its data-transmission quality.
Single-mode fiber optic
The core is very thin and enables light to flow in what is practically a straight line. This type of fiber is frequently used for telecom services, connections over very long distances (several miles) and in backbones (a term used to refer to the "nerve centre" of a high-speed network).
Multi-mode, step-index fiber optic
The core is thicker than the cladding. This type of fiber is very effective over short distances, but is not often used.
Multi-mode, graded-index fiber optic
The core and the cladding form successive layers of glass. It is frequently used for medium distances, local networks and the main cable routes inside buildings.
62.5/125 um, 50/125 um
100 Mbits/s to 1Gbit/s
<= 1 Gbit/s
<= 10 Gbits/s
Bandwidth for 850 nm
Bandwidth for 1350 nm
Optical waves spread along the optical core made of silica, melted quartz or plastic. The core diameter ranges from 50 um to 200 um.
The optical cladding ensures the optical waves remain in the core. The light ray spreads as it is repeatedly reflected against the barriers formed by the optical cladding.
The protective covering, usually a plastic layer with a thickness of between 25 and 1000 microns, gives the fiber excellent mechanical properties.
Most reliable and secure transmission method
Very high data transmission speed, up to 100 Gb/s
Low signal reduction: supports transmission over long distances (multi-mode fiber)
Immunity against electromagnetic interference
No electromagnetic radiation
Discrete, 100% secure link