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Communication system hasthree main phases:- TransmitterTransmission Media (Fiber Optic) Receiver Suppose two persons are sanding at short distance.One person says something to another person by shouting.Voice travels via a medium air. When the distance islonger than, we can not transmit the voice by air only. At this time it is very necessary that we have to usesome medium which could carry the sound wave along with. When transmission takes place between two devicestransmitting medium is required. These transmission media are the transmissionlines or communication channels. Here we are going to introduce Fiber OpticCommunication:- Fiber Optic Communication is a technique oftransmitting information from one place to another by sending light through anoptical fiber.The light forms an electromagnetic carrier wave whichis modulated to carry information. Fiber Optic developed in the 1970’s. Fiber optichas revolutionized the telecommunication industry and offers the advent of theinformation technology. In Fiber Optics, semiconductors lasers transmitinformation in the form of light passing through the hair thin glass fibers,with no significant loss of intensity over very long distance. Electrical signals areconverted into light wave and feed to the optical fiber medium which carriesthe light signals to the another end and than again the light signals areconverted to the electrical signals with the help of photoelectric diode. Thesesignals are amplified and sent to the receiver. Advantages of the optical fiber:- Optical fiber provides high quality of transmission of signals at very high speed. Whereas in copper wire transmission it takes about one hour but in optical fiber it just took one second.Optical fiber may be used to communicate either analog or digital signals.
In analog transmission, the light intensity varied continuously but, in digital transmission the light source is tuned on and off.Optical fiber transmission is not affected by the electromagnetic interference, by which noise and distortion are also reduced which provides the better communication.Optical fibers provide the security to our information which we used to transmit over the medium. Due to all above mentionedpoints optical fiber is popular and fiber optical distribution frame growing very rapidly in the market.