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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TABLE 1-1 Examples of information rates for some typical voice, video, and data
services 1.544-Mb/s transmission rate known as a Tl rate. It is formed by the time-
division multiplexing of 24 voice channels, each digitized at a 64-kb/s rate.
(a) Plot the values of the thermal noise characteristic W for a high-impedance
FET amplifier for data rates 1/7* ranging from 1 to 50 Mb/s. Let T = 300 K, gm =
0.005 S, Rb = 105 ft, C = 10 pF, and y = 0.90. Use Fig. 7-13 to find /2 and h.
For higher values [up to 2500 (Mb/s) • km], a laser must be used at these
wavelengths. At wavelengths around 1.3 /xm, where signal dispersion is very low
, bit-rate-distance products of at least 1 500 (Mb/s) • km are achievable with LEDs
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
12 other sections not shown