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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Radiance is the optical power radiated into a unit solid angle per unit emitting
surface area and is generally specified in terms of watts per square centimeter
per steradian . Since the optical power that can be coupled into a fiber depends
Surface - emitting LEDs are characterized by their lambertian output pattern ,
which means the source is equally bright when viewed from any direction . The
power delivered at an angle 0 , measured relative to a normal to the emitting
Placing the LED close to the lens surface thus results in a magnification M of the
emitting area . This is given by the ratio of the cross - sectional area of the lens to
that of the emitting area : M = = C ) ( 5 - 15 ) Using Eq . ( 5 - 4 ) we can show that ...
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
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