ABSTRACT
Exploitation of information transmission by light is one of the oldest and most important aspects of communication for all the living species in this planet earth. In fact, information transfer from one place to another can be easily carried by light from very close range such as microscopic observation to millions of miles by telescopic lenses. Due to the discovery of high-coherence light sources of lasers and the advent of high-quality fiber-optic technologies, communication with optics can be carried out beyond the transoceanic distances with small-size optical fiber. The carrier frequency of fiber optic communications can be as high as hundreds of Thz in visible or in near-infrared range of electromagnetic spectrum. In fact, fiber-optic communication carrier frequency is about 5 orders higher than the conventional microwave communication technology, which is about l Ghz region. The objective of this chapter is to describe briefly the basic aspects of communication with fiber optics.
