Network Wiring Basics
Fiber Optic Cable Components
The Protective Covering
Surrounds the cladding and is usually composed of one or more layers of polymer. This coating protects the core and cladding (the optical fiber) from shock and other physical trauma.

Componenets from innermost to outer, respectively, are: the buffer, the strength members, and the (outer) jacket.

The Optical Fiber
Composed of two concentric layers called the core and cladding. The core is the light carrying part while the surrounding cladding provides the difference in refractive index necessary for total internal reflection of light through the core.

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The Network Wiring Virtual Lecture by L. Scott Freudenthal