IOSR Journal of Engineering
An optical communication system consists of a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a receiver, which reproduces the message from the received optical signal. One of the most important types of optical communication system is optical Fiber communication which is based on using an optical fiber as the channel which carries the signal. A block diagram of the fiber optics communication system. Optical fiber is the most common type of channel for optical communications, however, other types of optical waveguides are used within communications gear, and have even formed the channel of very short distance (e.g. chip-to-chip, intra-chip) links in laboratory trials.