Electrical Wavelength-tunable Pulses Generated from Semiconductor Lasers and Erbium Doped Fiber Lasers PDF Download
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Author: Kit Chan
Publisher:
ISBN:
Category : Fiber optics
Languages : en
Pages : 198
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Book Description
Author: Kit Chan
Publisher:
ISBN:
Category : Fiber optics
Languages : en
Pages : 198
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : pt-BR
Pages :
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Book Description
Neste trabalho, descreve-se a geração de pulsos ópticos curtos com diferentes taxas de repetição, para aplicações em sistemas de transmissão de sólitons. Para isto foi desenvolvido um laser a fibra em anel operando na terceira janela de comunicações ópticas (em 1.55 mm), capaz de gerar pulsos curtos, utilizando a técnica de mode-locking ativo. Na configuração empregada o modulador de Mach-Zehnder, normalmente usado, foi substituído por um laser DFB, funcionando como modulador de intensidade e, ao mesmo tempo, como filtro óptico sintonizável. O laser semicondutor tem seu ganho chaveado através de modulação direta, levando a cavidade e operar no regime de mode-locking harmônico. Uma sintonia contínua de comprimentos de onda pode ser obtida, simplesmente, variando-se a temperatura do diodo laser. Foram analisados aspectos como estabilidade, duração e pureza espectral dos pulsos ópticos emitidos por essa fonte, bem como sua faixa de sintonia de comprimentos de onda e possíveis taxas de repetição. Os pulsos ópticos gerados foram transmitidos através de enlaces ópticos com fibra óptica convencional, comprovando-se a propagação de sólitons.
Author: Ka-lun Lee
Publisher:
ISBN:
Category : Fiber optics
Languages : en
Pages : 188
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Author: Hans-Georg Weber
Publisher: Springer Science & Business Media
ISBN: 3540680055
Category : Science
Languages : en
Pages : 476
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Book Description
This book is a detailed description of all the aspects of ultrahigh speed optical transmission technology. Ultrahigh-speed optical transmission technology is a key technology for increasing communication capacity. The devices developed for ultrahigh-speed optical transmission are not limited to communication applications only. They are key devices for high-speed optical signal processing, i.e. monitoring, measurement and control, and will thus give a wide technological basis for innovative science and technology. All these aspects of ultrahigh-speed optical transmission technology are described in detail in this book.
Author: Sina Riecke
Publisher: Cuvillier Verlag
ISBN: 3736936524
Category : Science
Languages : en
Pages : 136
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Book Description
Picosecond laser pulses find diverse applications for example in material processing as well as in analysis and sensing. Fluorescence lifetime spectroscopy in particular requires pulses with variable repetition rate and moderate pulse energy. While suitable pulses in the red and blue spectral range can be provided by gain-switched laser diodes, the generation of green laser pulses requires a more elaborate setup based on second harmonic generation. The starting point is a gain-switched infrared distributed-feedback laser diode. The optimization of the laser design and the operating conditions allows to generate spectrally narrow picosecond pulses with a peak power above 1 W. Different gain media are compared for further amplification of these pulses, and options for the miniaturization of the master-oscillator power-amplifier system are explored. The resulting intense infrared pulses are then used for second harmonic generation of green picoseconds pulses. Their peak power of above 5 W exceeds all previous green pulse sources with variable repetition rate. In terms of pulse energy and background suppression, the reported green pulses are thus ideally suited for fluorescence lifetime spectroscopy
Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 1948
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Author: Chai Yeh
Publisher: Elsevier
ISBN: 0080499260
Category : Technology & Engineering
Languages : en
Pages : 353
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Book Description
Photonic circuitry is the first-choice technological advancement recognized by the telecommunications industry. Due to the speed, strength, and clarity of signal, photonic circuits are rapidly replacing electronic circuits in a range of applications. Applied Photonics is a state-of-the-art reference book that describes the fundamental physical concept of photonics and examines the most current information available in the photonics field. Cutting-edge developments in semiconductors, optical switches, and solitons are presented in a readable and easily understandable style, making this volume accessible, if not essential, reading for practicing engineers and scientists. Introduces the concept of nonlinear interaction of photons with matters, photons, and phonons Covers recent developments of semiconductor lasers and detectors in the communications field Discusses the development of nonlinear devices, including optical amplifiers, solitons, and phase conjugators, as well as the development of photonic components, switches, interconnects, and image processing devices
Author: Junji Ohtsubo
Publisher: Springer
ISBN: 3319561383
Category : Science
Languages : en
Pages : 679
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Book Description
This book describes the fascinating recent advances made concerning the chaos, stability and instability of semiconductor lasers, and discusses their applications and future prospects in detail. It emphasizes the dynamics in semiconductor lasers by optical and electronic feedback, optical injection, and injection current modulation. Applications of semiconductor laser chaos, control and noise, and semiconductor lasers are also demonstrated. Semiconductor lasers with new structures, such as vertical-cavity surface-emitting lasers and broad-area semiconductor lasers, are intriguing and promising devices. Current topics include fast physical number generation using chaotic semiconductor lasers for secure communication, development of chaos, quantum-dot semiconductor lasers and quantum-cascade semiconductor lasers, and vertical-cavity surface-emitting lasers. This fourth edition has been significantly expanded to reflect the latest developments. The fundamental theory of laser chaos and the chaotic dynamics in semiconductor lasers are discussed, but also for example the method of self-mixing interferometry in quantum-cascade lasers, which is indispensable in practical applications. Further, this edition covers chaos synchronization between two lasers and the application to secure optical communications. Another new topic is the consistency and synchronization property of many coupled semiconductor lasers in connection with the analogy of the dynamics between synaptic neurons and chaotic semiconductor lasers, which are compatible nonlinear dynamic elements. In particular, zero-lag synchronization between distant neurons plays a crucial role for information processing in the brain. Lastly, the book presents an application of the consistency and synchronization property in chaotic semiconductor lasers, namely a type of neuro-inspired information processing referred to as reservoir computing.
Author: Konstantin L. Vodopyanov
Publisher: John Wiley & Sons
ISBN: 1119011973
Category : Technology & Engineering
Languages : en
Pages : 320
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Book Description
An important guide to the major techniques for generating coherent light in the mid-infrared region of the spectrum Laser-based Mid-infrared Sources and Applications gives a comprehensive overview of the existing methods for generating coherent light in the important yet difficult-to-reach mid-infrared region of the spectrum (2–20 μm) and their applications. The book describes major approaches for mid-infrared light generation including ion-doped solid-state lasers, fiber lasers, semiconductor lasers, and laser sources based on nonlinear optical frequency conversion, and reviews a range of applications: spectral recognition of molecules and trace gas sensing, biomedical and military applications, high-field physics and attoscience, and others. Every chapter starts with the fundamentals for a given technique that enables self-directed study, while extensive references help conduct deeper research. Laser-based Mid-infrared Sources and Applications provides up-to-date information on the state-of the art mid-infrared sources, discusses in detail the advancements made over the last two decades such as microresonators and interband cascade lasers, and explores novel approaches that are currently subjects of intense research such as supercontinuum and frequency combs generation. This important book: • Explains the fundamental principles and major techniques for coherent mid-infrared light generation • Discusses recent advancements and current cutting-edge research in the field • Highlights important biomedical, environmental, and military applications Written for researchers, academics, students, and engineers from different disciplines, the book helps navigate the rapidly expanding field of mid-infrared laser-based technologies.
Author: Irina T. Sorokina
Publisher: Springer Science & Business Media
ISBN: 3540364919
Category : Science
Languages : en
Pages : 600
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Book Description
This collection of authoritative reviews by leading experts provides a broad and instructive introduction to the most advanced techniques for generating coherent light in the mid-infrared region of the spectrum. With a wealth of up-to-date references – also available online.
