The fiber optic cable is to be used a variety of situations such as underground, outdoor poles or submerged underwater. The structure of cable depends on the situation where it is to be used, but the basic cable design principles remain the same.
The requirement of optical fiber material is to be transparent for the efficient transmission of light.
The mechanical property of cable is one of the most important factors for using any specific cable. The maximum allowable axial load on cable decides to the length of the cable can be reliably installed. That are several benefits of a fiber optic cable is a flexible, transparent fiber made by drawing plastic or glass to a diameter slightly thicker than that of human hair.
Fiber arrangements :
- Several arrangements of fiber cables are done to use it for different application in a cable. The most basic form is two fiber cable is proper design. Shows basic two fiber cable design as given below. It is also known as a basic building block of fiber cable.
- Multiple fiber cables can be combined together using some similar techniques.
- The basic fiber building blocks are used to form a large cable. These units are bound on a buffer material which acts as strength element along with an insulated copper conductor types of materials. The fiber building blocks are surrounded by paper tape, PVC jacket, yarn, and an outer sheath.
A number of a core are bundled in a plastic type of ducts. In case, ease identification of individual fibers is color-coded types. Shows some example of the color coding in the optical cable used by manufactures.
1 - Blue
2 - Orange
3 - Green
4 - Brown
5 - Grey
6 - White
7 - Red
8 - Black
9 - Yellow
10 - Violet
11 - Pink or light blue
12 - Turquoise or netutral