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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We will illustrate this by way of an example for the SONET OC-48 (2.5 Gb/s) link
we looked at in Example 8-2. □M Example 8-4. Assume that the laser diode
together with its drive circuit has a rise time of 0.025 ns (25 ps). Taking a 1 550-
12-4, which shows that the loss (in dB) increases linearly with the number of
stations. Example 12-2. For the applications given in Example 12-1, suppose that
for implementing a 10-Mb/s bus we have a choice of an LED that emits -10 dBm
or a ...
Example 12-10. Consider a dispersion-shifted fiber having D = 0.5 ps/(nm • km)
at 1550 nm. If T, = 20 ps, we have , 1 2^(3 x 108 m/s) (20 ps)2 i.disp = T t T- z : =
Ml Km P (1.7627)2 (1550 nm)2 0.5 ps/(nm • km) which shows that LdisP is on the
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
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