7 – Communication systems

Publisher Summary This chapter focuses on the communication systems and discusses the uses of opto-electronics and fiber optic cables in local, urban, metropolitan, and long distance communication and telecommunication networks. It also illustrates the designing of optical fiber cable system and the installation techniques that are commonly used. Because there are no strict rules for connecting fiber optic cables to the desk, it is possible to dispense completely with horizontal cross-connects and to route the cables from the intermediary cross connect via the riser directly to the desk. Fiber optic cables with four fibers allow two terminals to be connected per wall outlet box. Duplex connecting cables are run from the wall outlet box to the terminals. In addition, fiber optic cables are represented by a pair of numbers separated by a '/'. The chapter concludes that fiber optic connector not only provides a means of connecting two fiber optic cables together, but also provides a method of aligning the cores and bringing the ends as close together as possible with the lowest attenuation possible.