Optical fiber communication: it refers to the light as an information carrier, optical fiber as the transmission medium of communication. It is first of all to the telephone, telegraph, and other image and data signals to be transmitted to the transmission side photoelectric conversion of electrical signals into optical signals coming, then the optical fiber transmission to the receiver, the receiver will receive the optical signal into an electrical signal Finally, the reduction into an electrical signal.

Compared with electrical cables or microwave communication, the advantages of optical fiber communication as follows:

Optical fiber communication also has the following disadvantages: