The presentation covers the types of optical fiber cables including single mode, multi mode, armored, underground, aerial, duct and indoor cables. These cables are used mainly for digital audio connections between devices. A fiber-optic cable, also known as an optical-fiber cable, is an assembly similar to an electrical cable but containing one or more optical fibers that are used to carry. ITU-T has been active in the standardization of optical communications technology and the techniques for its optimal application within networks from the infancy of this industry. However, it is not always easy to find out what has been covered, and where it can be found. Covers the basics of fiber optic technology, including how light waves transmit data through thin strands of glass or plastic, and why fiber optics surpass. An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. The purpose of this article is to provide the non-technical reader with an overview of these. This series of courses are based on the Navy Electricity and Electronics Training Series (NEETS) section on Fiber Optic cable systems.