Fibre-optic systems are an alternative to copper wires for communicating signal transmission. The fibre-optic systems, available from Dueltek Computer Products , can span long distances between local phone systems, and form the backbone for many network systems. Other system users include cable television services, university campuses, office buildings, industrial plants, and electric utility companies.
The fibre-optic systems use light pulses to transmit information down fibre lines instead of using electronic pulses to transmit information down copper lines.
At one end of the system is a transmitter, which is the place of origin for information coming on to fibre-optic lines. The transmitter accepts coded electronic pulse information coming from copper wires. It then processes and translates that information into equivalently coded light pulses. A light-emitting diode (LED) or an injection-laser diode (ILD) can be used for generating the light pulses. Using a lens, the light pulses are funnelled into the fibre-optic medium from where they travel down the cable.
Light pulses move easily down the fibre-optic line with the help of a principle known as ‘Total Internal Reflection’. The principle of TIR states that when the angle of incidence exceeds a critical value, light cannot get out of the glass; instead, the light bounces back in. When this principle is applied to the construction of the fibre-optic strand, it is possible to transmit information down fibre lines in the form of light pulses.
The following are the five benefits of fibre optic systems:
- Speed: fibre optic networks operate at high speeds
- Bandwidth: large carrying capacity
- Distance: signals can be transmitted without refreshing, boosting or strengthening
- Resistance: higher resistance to electromagnetic noise such as radios, motors or other nearby cables
- Maintenance: fibre optic cables involve low maintenance costs.