Optical Networking Best Practices Handbook by John R. Vacca

By John R. Vacca

Optical Networking top Practices Handbook offers optical networking in a truly finished approach for nonengineers desiring to appreciate the basics of fiber, high-capacity, high-speed gear and networks, and upcoming provider companies. The booklet offers a pragmatic figuring out of fiber optics as a actual medium, checking out single-mode as opposed to multi-mode and the the most important inspiration of Dense Wave-Division Multiplexing.

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In this configuration, the core node of the backbone network provides the high-speed, large-capacity transfer function. The access nodes of the access network and the edge nodes of the backbone network provide functions such as subscriber termination, line concentration, and complicated service handling. The functions requiring complicated processing are executed only at the periphery of the network in this architecture. So, the highspeed, large-capacity core nodes become simple, and it becomes easy to apply an optical network node, such as an optical cross-connect system, to the core node of the backbone network [3].

Encouraged by the success of these applications, military R&D programs were funded to develop stronger fibers, tactical cables, ruggedized high-performance components, and numerous demonstration systems showing applications across the military spectrum [2]. Soon after, commercial applications followed. Both AT&T and GTE installed fiber-optic telephone systems in Chicago and Boston, respectively, in 1977. These successful applications led to an increase in fiber-optic telephone networks. Singlemode fibers operating in the 1310-nm, and later in the 1550-nm wavelength windows became the standard fiber installed for these networks by the early 1980s.

This concept is explained by Snell’s law, which states that the angle at which light is reflected is dependent on the refractive indices of the two materials—in this case, the core and the cladding. 1 [1,3], the lower refractive index of the cladding (with respect to the core) causes the light to be angled back into the core. The fiberscope quickly found applications in the medical field as well as in inspections of welds inside reactor vessels and combustion chambers of jet aircraft engines. Fiberscope technology has evolved over the years to make laparoscopic surgery one of the great medical advances of the twentieth century [2].

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