Semiconductor Optical Amplifiers

Publisher: Springer | Pages: 184 | 2002-01-30 | ISBN: 0792376579 | PDF | 6MB

The semiconductor optical amplifier (SOA) has emerged as an important component in many optical fiber communication, switching and signal processing systems. Besides its basic use as an in-line amplifier, SOAs have found use in a myriad of applications. Semiconductor Optical Amplifiers provides a comprehensive and detailed treatment of the design and applications of SOAs.

Key areas covered include:

* Historical background.
* SOA principles - theory of amplification, gain, noise, noise figure, polarisation dependence, spectral bandwidth, dynamics.
* SOA structures - travelling-wave, Fabry-Perot, DBR, DFB, multi-section, twin-guide, polarisation insensitive configurations, low-reflectivity coatings, angled facets, high-power devices, gain clamped devices, SOA packaging.
* Bulk and quantum-well semiconductor materials.
* Static and dynamic modelling - travelling-wave equations, recombination mechanisms, analytical approximations and computer modelling techniques.
* SOA optimisation, slow and fast pulse amplification.
* Applications in optical communication systems - direct detection and coherent receivers, amplified light detection statistics, preamplifier, in-line amplifier, booster amplifier, amplifierchains, SOA based optical network topologies, TDM, WDM, soliton transmission, system experiments, analog systems.
* Non-linear behaviour - cross-gain modulation, self-phase and cross-phase modulation, four-wave mixing, frequency chirping, bistability.
* Functional applications - intensity modulator, phase modulator, switch, add/drop multiplexer, wavelength converter, in-line detector, dispersion compensator, pulse-shaper, all-optical clock recovery, loop mirror configurations, logic functions.
* SOA photonic integrated circuits.
* Current developments and future prospects.

Semiconductor Optical Amplifiers is an invaluable information source for researchers and engineers involved in SOA and optical systems design and manufacturing. It is also useful to graduate students, in optoelectronics, optical communications and optical engineering, enteringthis rapidly growing and exciting field of research and development.

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Electronic Circuit Design: From Concept to Implementation

Electronic Circuit Design: From Concept to Implementation

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Publisher: CRC | Pages: 504 | 2008-06-02 | ISBN 0849376173 | PDF | 13 MB

With growing consumer demand for portability and miniaturization in electronics, design engineers must concentrate on many additional aspects in their core design. The plethora of components that must be considered requires that engineers have a concise understanding of each aspect of the design process in order to prevent bug-laden prototypes.

Electronic Circuit Design allows engineers to understand the total design process and develop prototypes which require little to no debugging before release. It providesstep-by-step instruction featuring modern components, such as analog and mixed signal blocks, in each chapter. The book details every aspect of the design process from conceptualization andspecification to final implementation and release. The text also demonstrates how to utilize device data sheet information and associated application notes to design an electronic system.

The hybrid nature of electronic system design poses a great challenge to engineers. This bookequips electronics designers with the practical knowledge and tools needed to develop problem free prototypes that are ready for release.

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Power Quality in Electrical Machines and Power Systems

520 pages | Academic Press (February 15, 2008) | ISBN: 0123695368 | PDF | 43 Mb

Power Quality of power systems affects all connected electrical and electronic equipment. Power Quality is a measure of deviations in voltage and frequency of the particular supply system. In recent years, there has been a considerable increase in nonlinear loads; in particular distributed loads, such as computers, TV monitors and lighting. These draw harmonic currents which, when distorted, have detrimental effects including interference, loss of reliability, increased operating costs, equipment overheating, motor failures, capacitor failure and inaccurate power metering. This subject is pertinent to engineers involved with electric power systems, electronic equipment, computers and manufacturing equipment. This book shows readers to understand the causes and effects of power quality problems such as non-sinusoidal wave shapes, voltage outages, losses due to poor power quality, origins of single-time events such as voltage dips, voltage reductions, and outages, along with techniques to mitigate these problems.

. Provides theoretical and practical insight into power quality problems of machines and systems 
. Problems/solutions at the end of each chapter dealing with practical applications
. Includes application examples including SPICE, Mathematica, and MATLAB examples


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