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 fidelity criterion is usually specified in terms of a peak
signal - to - rms - noise ratio . The calculation of the error probability for a digital
optical communication receiver differs from that of conventional electric systems .
For large optical signals incident on a pin photodiode , the quantum noise
associated with the signal detection process dominates , so that s m ? l , _ m - R ,
P , ( 7 - 107 ) Ñ - 49B 49B Since the signal - to - noise ratio in this case is
Pump Signal Output power ( dBm ) ASE 1 . 48 1 . 50 1 . 56 1 . 58 1 . 52 1 . 54
Wavelength ( um ) FIGURE 11 - 8 Representative 1480 - nm pump spectrum and
a typical output signal at 1540 nm with the associated amplified - spontaneous ...
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
14 other sections not shown