Download or read book Waveguide Mode Converter and Method Using Same written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A waveguide mode converter converts electromagnetic power being transmitted in a TE.sub.0n or a TM.sub.0n mode, where n is an integer, to an HE.sub. 11 mode. The conversion process occurs in a single stage without requiring the power to pass through any intermediate modes. The converter comprises a length of circular corrugated waveguide formed in a multiperiod periodic curve. The period of the curve is selected to couple the desired modes and decouple undesired modes. The corrugation depth is selected to control the phase propagation constant, or wavenumbers, of the input and output modes, thereby preventing coherent coupling to competing modes. In one embodiment, both the period and amplitude of the curve may be selectively adjusted, thereby allowing the converter to be tuned to maximize the conversion efficiency.
Download or read book Official Gazette of the United States Patent and Trademark Office written by United States. Patent and Trademark Office and published by . This book was released on 2002 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of Aperiodic Waveguide Mode Converters written by and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous studies by Haq, Webb and others have demonstrated the design of aperiodic waveguide structures to act as filters and mode converters. These aperiodic structures have been shown to yield high efficiency mode conversion or filtering in lengths considerably shorter than structures using gradual transitions and periodic perturbations. The design method developed by Haq and others has used mode-matching models for the irregular, stepped waveguides coupled with computer optimization to achieve the design goal using a Matlab optimization routine. Similar designs are described here, using a mode matching code written in Fortran and with optimization accomplished with the downhill simplex method with simulated annealing using an algorithm from the book Numerical Recipes in Fortran. Where Haq et al. looked mainly for waveguide shapes with relatively wide cavities, we have sought lower profile designs. It is found that lower profiles can meet the design goals and result in a structure with lower Q. In any case, there appear to be very many possible configurations for a given mode conversion goal, to the point that it is unlikely to find the same design twice. Tolerance analysis was carried out for the designs to show edge sensitivity and Monte Carlo degradation rate. The mode matching code and mode conversion designs were validated by comparison with FDTD solutions for the discontinuous waveguides.
Download or read book Radio Engineering and Telecommunications Waveguide Systems in the Microwave Range written by Islam Islamov and published by Springer Nature. This book was released on with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Manual written by United States. Department of the Air Force and published by . This book was released on 1968 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cavity Optomechanics written by Markus Aspelmeyer and published by Springer. This book was released on 2014-07-05 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last few years cavity-optomechanics has emerged as a new field of research. This highly interdisciplinary field studies the interaction between micro and nano mechanical systems and light. Possible applications range from novel high-bandwidth mechanical sensing devices through the generation of squeezed optical or mechanical states to even tests of quantum theory itself. This is one of the first books in this relatively young field. It is aimed at scientists, engineers and students who want to obtain a concise introduction to the state of the art in the field of cavity optomechanics. It is valuable to researchers in nano science, quantum optics, quantum information, gravitational wave detection and other cutting edge fields. Possible applications include biological sensing, frequency comb applications, silicon photonics etc. The technical content will be accessible to those who have familiarity with basic undergraduate physics.
Download or read book Microwave Horns and Feeds written by A. David Olver and published by IET. This book was released on 1994 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is devoted to the theory, design, performance and application of microwave horns and feeds for reflector antennas. It is a collaboration between the microwave antenna group at Queen Mary and Westfield College and the electromagnetic group at the University of Winnipeg, Canada.
Download or read book Electromagnetic Nondestructive Evaluation XI written by A. Tamburrino and published by IOS Press. This book was released on 2008-11-05 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 12th International Workshop on Electromagnetic Nondestructive Evaluation (ENDE’07) was held from the 19th to the 21st of June 2007 at the Wolfson Centre for Magnetics at Cardiff University, Cardiff, United Kingdom. The aim of this annual workshop is to bring together engineers and scientists from universities, research institutions and industry to discuss and exchange the latest ideas and findings in basic research and development as well as industrial applications of electromagnetic nondestructive evaluation. This publication contains the proceedings of the workshop. In this book you will find a variety of topics on both theoretical and experimental aspects of nondestructive evaluation in eddy currents, magnetic measurements, magnetic flux leakage, Barkhausen methods, new methods and inverse problems for crack detection.
Download or read book Nonlinear Photonics written by Jia-Ming Liu and published by Cambridge University Press. This book was released on 2022-01-06 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suitable for both graduate and senior undergraduate students, this textbook offers a logical progression through the underlying principles and practical applications of nonlinear photonics. Building up from essential physics, general concepts, and fundamental mathematical formulations, it provides a robust introduction to nonlinear optical processes and phenomena, and their practical applications in real-world devices and systems. Over 45 worked problems illustrate key concepts and provide hands-on models for students, and over 160 end-of-chapter exercises supply students with plenty of scope to master the material. Accompanied by a complete solutions manual for instructors, including detailed explanations of each result, and drawing on the author's 35 years of teaching experience, this is the ideal introduction to nonlinear photonics for students in electrical engineering.
Download or read book Handbook of Silicon Photonics written by Laurent Vivien and published by Taylor & Francis. This book was released on 2016-04-19 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of integrated silicon photonic circuits has recently been driven by the Internet and the push for high bandwidth as well as the need to reduce power dissipation induced by high data-rate signal transmission. To reach these goals, efficient passive and active silicon photonic devices, including waveguide, modulators, photodetectors,
Download or read book Theory of Nonuniform Waveguides written by B. Z. Katsenelenbaum and published by IET. This book was released on 1998 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents and develops the mathematical tools required to effectively examine and analyse propagation processes of waves of various natures using the cross section method, in artificial and non-artificial waveguides. These techniques are used in the solution of practical situations in various fields, such as plasma heating in nuclear fusion, materials processing and radar and satellite communication systems.
Download or read book CMOS Compatible Key Engineering Devices for High Speed Silicon Based Optical Interconnections written by Jing Wang and published by Springer. This book was released on 2018-11-23 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses some research results for CMOS-compatible silicon-based optical devices and interconnections. With accurate simulation and experimental demonstration, it provides insights on silicon-based modulation, advanced multiplexing, polarization and efficient coupling controlling technologies, which are widely used in silicon photonics. Researchers, scientists, engineers and especially students in the field of silicon photonics can benefit from the book. This book provides valuable knowledge, useful methods and practical design that can be considered in emerging silicon-based optical interconnections and communications. And it also give some guidance to student how to organize and complete an good dissertation.
Download or read book Organic Electro Optics and Photonics written by Larry R. Dalton and published by Cambridge University Press. This book was released on 2015-07-30 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This definitive guide to modern organic electro-optic and photonic technologies provides critical insight into recent advances in organic electro-optic materials, from the underlying quantum and statistical concepts through to the practical application of materials in modern devices and systems. • Introduces theoretical and experimental methods for improving organic electro-optic and photonic technologies • Reviews the central concepts of nonlinear optics, focusing on multi-scale theoretical methods • Provides clear insight into the structure and function relationships critical to optimizing the performance of devices based on organic electro-optic materials. Serving as a primer for the systematic nano-engineering of soft matter materials, this is an invaluable resource for those involved in the development of modern telecommunication, computing, and sensing technologies depending on electro-optic technology. It is also an indispensable work of reference for academic researchers and graduate students in the fields of chemistry, physics, electrical engineering, materials science and engineering, and chemical engineering.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Nondestructive Evaluation X written by S. Takahashi and published by IOS Press. This book was released on 2007-06-29 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication aims to discuss the technical advances and the developments of the basics of electromagnetic NDT. Though one of the main topics is the Eddy Current Testing which is put to practical use in industry now as one of the approved methods of crack detection in steels and metallic structures, Electromagnetic Nondestructive Evaluation (X) emphasizes magnetic NDE method according to the concept of NDE & Science Research Center. The book contains thirty-three technical papers, covering topics on eddy current testing and technique, industrial applications, new methods, NDE by magnetism and magnetics, inverse problem and benchmark. The material is important for scientists and engineers working in the field of electromagnetic nondestructive testing or nondestructive evaluation, in defect detection and sizing, as well as in material characterization.
