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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1 ATTENUATION Attenuation of a light signal as it propagates along a fiber is an
important consideration in the design of an optical communication system , since
it plays a major role in determining the maximum transmission distance ...
At wavelengths longer than lum , infrared absorption effects tend to dominate
optical signal attenuation . Combining the infrared , ultraviolet , and scattering
losses , we get the results shown in Fig . 3 - 5 for multimode fibers and Fig . 3 - 6
( a ) Underfilling the fiber excites only lower - order modes ; ( b ) an overfilled fiber
has excess attenuation from higher - order mode loss . 13 . 3 . 2 Insertion - Loss
Method For cables with connectors , one cannot use the cutback method .
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
14 other sections not shown