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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In an analog system , the time - varying electric analog signal s ( t ) is used to
modulate directly an optical source about a bias current point 1b , as shown in
Fig . 4 - 35 . With no signal input , the optical power output is P , . When the signal
s ( t ) ...
Tunable filters EDFAs EDFAsie in Input fiber 1 Output fiber 1 Input fiber 2 Output
fiber 2 Added optical signals Dropped optical signals TXs RXs Digital cross -
connect FIGURE 12 - 20 Optical cross - connect architecture using optical space
That is , the output pulse response Pout ( t ) of the fiber can be calculated through
the convolution ( denoted by * ) of the input pulse Pin ( t ) and the power impulse
function h ( t ) of the fiber . The period T between the input pulses should be ...
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
14 other sections not shown