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Optical amplifiers.

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Optical amplifiers play a central role in all categories of fibre communications systems and networks. By compensating for the losses exerted by the transmission medium and the components through which the signals pass, they reduce the need for expensive and slow optical-electrical-optical conversion. The photonic gain media, which are normally based on glass- or semiconductor-based waveguides, can amplify many high speed wavelength division multiplexed channels simultaneously. Recent research has also concentrated on wavelength conversion, switching, demultiplexing in the time domain and other enhanced functions. Advances in Optical Amplifiers presents up to date results on amplifier performance, along with explanations of their relevance, from leading researchers in the field. Its chapters cover amplifiers based on rare earth doped fibres and waveguides, stimulated Raman scattering, nonlinear parametric processes and semiconductor media. Wavelength conversion and other enhanced signal processing functions are also considered in depth. This book is targeted at research, development and design engineers from teams in manufacturing industry, academia and telecommunications service operators.

Optical amplifiers. --- Amplifiers, Optical --- Light amplifiers --- Optoelectronic devices --- Laser physics

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With the explosion of information traffic, the role of optical amplifiers becomes very significant in fulfilling the demand of faster optical signals and data processing in the field of communication. This book covers different advanced functionalities of optical amplifiers as well as their emerging applications in optical communication networks. The first chapter deals with an efficient and validated time-domain numerical modelling of semiconductor optical amplifiers (SOAs) and SOA-based circuits, while the second chapter is based on the working of gallium nitride-based semiconductor optical amplifiers. The role of SOAs for the next generation of high-data-rate optical packet-switched network is presented in Chapter 3. Chapter 4 covers the all-optical semiconductor optical amplifier based on quantum dots (QD-SOA) and its function as an arithmetic processor. In Chapter 5, the authors have presented the role of SOAs in intensity modulation of the optical pulses and their use in deterministic timing jitter and peak pulse power equalization analysis. In Chapter 6, the investigation of broadband S-band to L-band erbium-doped fibre amplifier (EDFA) module is presented, and Chapter 7 includes the optimized design technique of Yb3+/Er3+-codoped phosphate microring resonator amplifiers. All selected chapters are very interesting and well organized, and I hope they will be of great value to postgraduate students, researchers, academics and anyone seeking to understand the advanced functionalities of optical amplifiers in the present scenario.

Optical amplifiers. --- Amplifiers, Optical --- Light amplifiers --- Optoelectronic devices --- Applied optics

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Future access networks are converged optical-wireless networks, where fixed-line and wireless services share the same infrastructure. In this book, semiconductor optical amplifiers (SOA) and mm-wave wireless links are investigated, and their use in converged access networks is explored: SOAs compensate losses in the network, and thereby extend the network reach. Millimeter-wave wireless links substitute fiber links when cabling is not economical.

converged access networks --- optische Halbleiterverstärker --- konvergierte Zugangsnetzesemiconductor optical amplifiers --- Millimeterwellen-Funkverbindungen --- mm-wave wireless links

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Novel Specialty Optical Fibers and Applications focuses on the latest developments in specialty fiber technology and its applications. The aim of this reprint is to provide an overview of specialty optical fibers in terms of their technological developments and applications. Contributions include:1. Specialty fibers composed of special materials for new functionalities and applications in new spectral windows.2. Hollow-core fiber-based applications.3. Functionalized fibers.4. Structurally engineered fibers.5. Specialty fibers for distributed fiber sensors.6. Specialty fibers for communications.

optical amplifiers --- doped fiber amplifiers --- near-infrared --- molecular gas spectroscopy --- photothermal spectroscopy --- heterodyne detection --- specialty fiber --- anti-resonant effect --- hollow structure --- sensing applications --- orbital angular momentum --- optical fiber --- fiber mode crosstalk --- vortex mode generator --- fiber optics --- plasmonic gratings --- nanodot --- light collection --- hollow-core fibers --- anti-resonant hollow-core fibers --- tapered fibers --- fiber gas lasers --- fiber end cap --- SiO2-Au-TiO2 heterostructure --- long-range surface plasmon resonance --- microstructured optical fiber --- fiber sensor --- photonic crystal fibers --- fiber lasers --- stimulated Raman scattering --- gas Raman lasers --- specialty fibers --- Brillouin optical time domain analysis --- BOTDA --- distributed fiber sensor --- photonic crystal fiber --- strain and temperature sensing --- liquid crystal --- dual-core photonic crystal fiber --- polarization beam splitter --- extinction ratio --- polarization filter --- surface plasmon resonance --- gold-coated --- crosstalk --- mid-infrared (mid-IR) --- chalcogenide glasses (ChGs) --- optical microfibers (MFs) --- supercontinuum (SC) --- molecular sensing --- Raman spectroscopy --- capillary-based hollow core fibers --- hollow core photonic crystal fiber --- detection --- distributed acoustic sensing --- DAS --- scattering enhancement fiber --- fiber-optic sensors --- few-mode fiber --- microfiber --- Mach–Zehnder interferometer --- critical wavelength --- multicore fiber --- fiber Bragg grating --- long period grating --- fiber grating sensors --- n/a --- Mach-Zehnder interferometer