Optical Fiber Communications
The third edition of this popular text and reference book presents the fundamental principles for understanding and applying optical fiber technology to sophisticated modern telecommunication systems.
Optical-fiber-based telecommunication networks have become a major information-transmission-system, with high capacity links encircling the globe in both terrestrial and undersea installations. Numerous passive and active optical devices within these links perform complex transmission and networking functions in the optical domain, such as signal amplification, restoration, routing, and switching. Along with the need to understand the functions of these devices comes the necessity to measure both component and network performance, and to model and stimulate the complex behavior of reliable high-capacity networks.
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TEO Cladding n2 Exponential decay Core ni tt Harmonic variation Cladding na
Exponential decay FIGURE 2 - 14 Electric field distributions for several of the
lower - order guided modes in a symmetrical - slab waveguide . completely
As soon as B becomes smaller than nak , power leaks out of the core into the
cladding region . Leaky modes can carry significant amounts of optical power in
short fibers . Most of these modes disappear after a few centimeters , but a few
approached , the field penetrates further into the cladding region and a greater
percentage of the energy travels in the cladding . At cutoff the field no longer
decays outside the core and the mode now becomes a fully radiating mode .
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
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