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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4.3.1 Laser Diode Modes and Threshold Conditions For optical fiber
communication systems requiring bandwidths greater than approximately 200
MHz, the semiconductor injection laser diode is preferred over the LED. Laser
diodes typically ...
This value sets the upper limit to the direct modulation capability of the laser
diode. A laser diode can readily be pulse-modulated since the photon lifetime is
much smaller than the carrier lifetime. If the laser is completely turned off after
The system parameters involved in deciding between the use of an LED and a
laser diode are signal dispersion, data rate ... Since laser diodes typically couple
from 10 to 15 dB more optical power into a fiber than an LED, greater
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
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