Network Sales and Services Handbook

Chapter 22. Introduction to Fiber Optics

The following topics are covered in this chapter:

• Optic Bands and Transmission Windows

• SONET

• DWDM

The foundation of any optical system is the fiber optic cabling. Basic fiber optic cables consist of the following components:

• Silica core—. This is the center of the cable.

• Cladding—. Cladding is also at the center of the cable; this and the silica core are used for carrying the optic, or lightwave (λ), signal

• Coating, strength members, and a plastic jacket—. These enclose the fiber, providing the necessary tinsel and scratch resistance to protect the fibers.

• Transceivers—. These are attached to both ends of the core for emitting and receiving the light pulses that form the information bits in the optical network. ...