Composition of a Fiber Optic Cable

A typical fiber optic cable consists of several components: optical fiber; strand buffer; strength members; optical shield materials for mechanical protection; outer jacket.Each of these components has a specific function within the cable to help ensure that the data get transmitted reliably.
Optical Fiber
An optical fiber strand is the basic element of a fiber optic cable.All fiber strands have at least three components to their cross sections: the core, the cladding,and the coating. Plastic Optical Fiber Cable consists of a plastic core and where from 50 microns up, surrounded by a plastic cladding of a different index of refraction.Generally speaking,these are the lowest-quality optical fibers and are seldom sufficient to transmit light over long distance.Plastic optical cables are used for very short distance data transmissions or for transmission of visible light in decorations or other specially lighting purposes not related to data transmission.Recently, plastic optic cables have been promoted as a horizontal in LAN applications for residential systems.However,the difficulty in manufacturing a graded-index plastic optical fiber,combined with a low bandwidth for dollar value, has kept plastic optical fiber from being accepted as a horizontal medium in commercial applications.

Buffer
The buffer,the second-most distinguishing characteristic of the cable, is the component that provides additional protection for the optical fibers inside the cable.The buffer does just what its name implies: it buffers, or cushions,the optical fiber from the stresses and forces of the outside world.Optical fiber buffers are classified as either tight or loose tube.
Number of Optical Fibers
Yet another difference between fiber optic cables is the number of individual optical fiber optic fiber with them.The number depends on the intended use of the cable and can increase the table's size,cost,and capacity.Because the focus of this book is network cabling and the majority of fiber optic cables you will encounter for networking are tight buffered,we will limit our discussions here in tight-buffered cables.These cables can be divided into three categories based on the number of optical fibers：Simplex cables; Duplex cables; multiplier cables. Duplex Fiber Optic Cable, in contrast, have two tight-buffered optical fibers inside a single jacket.The most popular use for duplex fiber optic cables is as a fiber-optic cable is as a fiber -optic a LAN backbone cable, because all LAN connections need a transmission fiber and a reception fiber.Duplex cables have both inside a single cable, and running a single cables is of course easier than running two.
Fiber To The Home
As fiber to the home (Ftth) becomes practical with the growth of broadband it becomes important to see how it work in practice.The FNC trial was designed to explore FTTH issues, to develop relationships, and to determine a business plan that incorporates ftth factors.Some of the critical issues of Ftth Drop Cable include market drives and market inhibitors, OSP architectures, major cost areas, timing, and revenue sources.