The devices used in fiber optic communication are divided into
Modern fiber-optic communication systems generally include optical transmitters that convert electrical signals into optical signals, optical fiber cables to carry the signal, optical amplifiers, and optical receivers to convert the signal back into an electrical signal. The process of communicating using fiber optics involves the following basic steps: Optical fiber is used by telecommunications companies to transmit telephone signals, Internet communication and cable television signals. The process of optical communication breaks down into a few simple steps: E/O converters use light-emitting elements such as semiconductor lasers, O/E converters use light-receiving elements such as photodiodes, and optical elements such as lenses are used at the input and output of optical fiber. Raman amplifiers offer a complementary approach by using the transmission fiber itself as the gain medium, providing. It works on the principle of total internal reflection, allowing light to move through the fiber with very little loss.
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