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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51 eV Electron energy mm hy = 820 nm Hole barrier 2121 2 / 14 Injected holes (
c ) Refractive index Active region - Waveguide region — FIGURE 4 - 8 ( a ) Cross
- section drawing ( not to scale ) of a typical GaAlAs double - heterostructure ...
emitter , the plane of the active light - emitting region is oriented perpendicularly
to the axis of the fiber , as shown in Fig . 4 - 9 . In this configuration , a well is
etched through the substrate of the device , into which a fiber is then cemented in
the active - layer thickness , since about half the light travels in the confining
layers . Such lasers can operate reliably only up to continuous - wave ( CW )
output powers of 3 – 5 mW . Here , the transverse and lateral half - power beam
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Overview of Optical Fiber Communications
Structures Waveguiding and Fabrication
Signal Degradation in Optical Fibers
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