Write any two advantages of optical communication.

Hint
Optical communication uses light for the transmission of data over large distances. Optical communication systems use the technology of optical fibers made of silica glass. The transmission of light using optical fibers works on the principle of total internal reflection.

Complete step by step answer
An optical communication system consists of various components such as optical fiber, light signal transmitter, photodetector, optical amplifiers, etc.
The incident rays of light traveling along the length of the optical fiber get bounced off from the walls of the optical fiber exhibiting the phenomenon of total internal reflection.
The communication using optical fibers has various advantages over other metal cables. Some advantages of optical communication are as follows:
(i) The bandwidth of transmission and the amount of transmitted data is large if optical fibers cables are used instead of metal cables.
(ii) Noise or disturbance in the transmission signals does not affect optical fiber communication.

Additional Information
Some other advantages of optical communication are as follows:
(i) Optical fiber communications offer transmissions over a long distance due to a low power loss in the communication processes.
(ii) Optical communication is an economic and cost-effective alternative for the transmission of a large amount of data at greater speeds.

Note
There does present noise due to disturbances in signals during data transmission in optical fiber communications. However, that does not affect the optical communication to that extent.