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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4.3.8 Temperature Effects An important factor to consider in the application of
laser diodes is the temperature dependence of the threshold current kh(T). This
parameter increases with temperature in all types of semiconductor lasers
Gain FIGURE 6-14 Variation of the electron excess noise factor Fe as a function
of the electron gain for various values of the effective ionization rate ratio ken- (
Reproduced with permission from Webb. Mclntyre, and Conradi.7) Figure 6-14 ...
Recall from Eq. (7-51) that the bit-error rate (BER) can be given in terms of a Q
factor, where, from Eq. (7-53), q _ bon — bpn V< + yj<(f When thermal noise is
dominant, we have o^n = a\a , as we saw in Chap. 7. However, for an EDFA the ...
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
12 other sections not shown