Skip to main content

Dpg Methods For Nonlinear Fiber Optics

In Order to Read Online or Download Dpg Methods For Nonlinear Fiber Optics Full eBooks in PDF, EPUB, Tuebl and Mobi you need to create a Free account. Get any books you like and read everywhere you want. Fast Download Speed ~ Commercial & Ad Free. We cannot guarantee that every book is in the library!

DPG Methods for Nonlinear Fiber Optics

DPG Methods for Nonlinear Fiber Optics Book
Author : Sriram Nagaraj
Publisher : Unknown
Release : 2018
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

In recent years, the Discontinuous Petrov-Galerkin (DPG) method has been the subject of significant study. It comes with a collection of desirable properties, including uniform/mesh independent stability, localizable test norms via broken test spaces, and a canonical error indicator that is incorporated as part of the solution. In this work, the DPG method is applied to problems arising in fiber optics. Accurate modeling of wave propagation in nonlinear media is an important task in fiber optics applications. Nonlinear Maxwell equations in the context of optical fibers have been studied extensively in the past. Analysis of these intensity-dependent nonlinearities are based on several simplifying approximations which result in a nonlinear Schrodinger (NLS) type equation. The Schrodinger equation from a spacetime DPG perspective is discussed. In particular, a 2nd order L2 stable ultraweak formulation of the Schrodinger equation is constructed by introducing the notion of an auxiliary boundary operator. This theoretical device requires an operator-specific conforming element to develop optimal convergence rates. Numerical studies show how, modulo (expected) roundoff issues, the theoretical convergence rates are delivered. Next, the use of the DPG method in modeling and simulating optical fiber laser amplifiers with nonlinear Raman gain is studied. In this application, the interaction of two time harmonic electromagnetic fields (the signal and pump fields) governed by two weakly coupled nonlinear Maxwell equations results in the amplification phenomenon. A novel Raman gain model for describing the phenomenon is proposed and an ultra weak DPG formulation is used for the discretization of the proposed model. The nonlinearity is handled by using simple iterations between the two systems. DPG implementation of a perfectly matched layer (PML) at the exit end of the fiber is essential in this model, as is the use of sum factorization for element computations. The presented results show that the signal field indeed gains power along the fiber, thereby justifying the use of the model. Auxiliary results presented in this dissertation include the construction of DPG Fortin operators for 2nd order problems.

Applications of Nonlinear Fiber Optics

Applications of Nonlinear Fiber Optics Book
Author : Govind Agrawal
Publisher : Academic Press
Release : 2008-03-05
ISBN : 9780123743022
Language : En, Es, Fr & De

GET BOOK

Book Description :

* The only book describing applications of nonlinear fiber optics * Two new chapters on the latest developments: highly nonlinear fibers and quantum applications * Coverage of biomedical applications * Problems provided at the end of each chapter The development of new highly nonlinear fibers - referred to as microstructured fibers, holey fibers and photonic crystal fibers - is the next generation technology for all-optical signal processing and biomedical applications. This new edition has been thoroughly updated to incorporate these key technology developments. The book presents sound coverage of the fundamentals of lightwave technology, along with material on pulse compression techniques and rare-earth-doped fiber amplifiers and lasers. The extensively revised chapters include information on fiber-optic communication systems and the ultrafast signal processing techniques that make use of nonlinear phenomena in optical fibers. New material focuses on the applications of highly nonlinear fibers in areas ranging from wavelength laser tuning and nonlinear spectroscopy to biomedical imaging and frequency metrology. Technologies such as quantum cryptography, quantum computing, and quantum communications are also covered in a new chapter. This book will be an ideal reference for: R&D engineers working on developing next generation optical components; scientists involved with research on fiber amplifiers and lasers; graduate students and researchers working in the fields of optical communications and quantum information. * The only book on how to develop nonlinear fiber optic applications * Two new chapters on the latest developments; Highly Nonlinear Fibers and Quantum Applications * Coverage of biomedical applications

Nonlinear Fiber Optics

Nonlinear Fiber Optics Book
Author : Govind P. Agrawal
Publisher : Unknown
Release : 1989-01-01
ISBN : 9780120451401
Language : En, Es, Fr & De

GET BOOK

Book Description :

This second edition will be an account of nonlinear optical phenomena in fiber optics. It synthesizes research material. Particular attention is paid to the importance of nonlinear effects in the design of optical fiber communication systems.

A Scalable Hp adaptive Finite Element Software with Applications in Fiber Optics

A Scalable Hp adaptive Finite Element Software with Applications in Fiber Optics Book
Author : Stefan Klaus Wilhelm Henneking
Publisher : Unknown
Release : 2021
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

In this dissertation, we present a scalable parallel version of hp3D—a finite element (FE) software for analysis and discretization of complex three-dimensional multiphysics applications. The developed software supports hybrid MPI/OpenMP parallelism for large-scale computation on modern manycore architectures. The focus of the effort lies on the development and optimization of the parallel software infrastructure underlying all distributed computation. We discuss the challenges of designing efficient data structures for isotropic and anisotropic hp-adaptive meshes with tetrahedral, hexahedral, prismatic, and pyramidal elements supporting discretization of the exact sequence energy spaces. While the code supports standard Galerkin methods, special emphasis is given to systems arising from discretization with the discontinuous Petrov–Galerkin (DPG) method. The method guarantees discrete stability by employing locally optimal test functions, and it has a built-in error indicator which we exploit to guide mesh adaptivity. In addition to interfacing with third-party packages for various tasks, we have developed our own tools including a parallel nested dissection solver suitable for scalable FE computation of waveguide geometries. We present weak-scaling results with up to 24576 CPU cores and numerical simulations with more than one billion degrees of freedom. The new software capabilities enable solution of challenging wave propagation problems with important applications in acoustics, elastodynamics, and electromagnetics. These applications are difficult to solve in the high-frequency regime because the FE discretization suffers from significant numerical pollution errors that increase with the wavenumber. It is critical to control these errors to obtain a stable and accurate method. We study the pollution effect for waveguide problems with more than 8000 wavelengths in the context of robust DPG FE discretizations for the time-harmonic Maxwell equations. We also discuss adaptive refinement strategies for multi-mode fiber waveguides where the propagating transverse modes must be resolved sufficiently. Our study shows the applicability of the DPG error indicator to this class of problems. Finally, we present both modeling and computational advancements to a unique three-dimensional DPG FE model for the simulation of laser amplification in a fiber amplifier. Fiber laser amplifiers are of interest in communication technology, medical applications, military defense capabilities, and various other fields. Silica fiber amplifiers can achieve high-power operation with great efficiency. At high optical intensities, multi-mode amplifiers suffer from undesired thermal coupling effects which pose a major obstacle in power-scaling of such devices. Our nonlinear 3D vectorial model is based on the time-harmonic Maxwell equations, and it incorporates both amplification via an active dopant and thermal effects via coupling with the heat equation. The model supports co-, counter-, and bi-directional pumping configurations, as well as inhomogeneous and anisotropic material properties. The high-fidelity simulation comes at the cost of a high-order FE discretization with many degrees of freedom per wavelength. To make the computation more feasible, we have developed a novel longitudinal model rescaling, using artificial material parameters with the goal of preserving certain quantities of interest. Numerical tests demonstrate the applicability and utility of this scaled model in the simulation of an ytterbium-doped, step-index fiber amplifier that experiences laser amplification and heating

Fundamentals of Optical Fibers

Fundamentals of Optical Fibers Book
Author : John A. Buck
Publisher : John Wiley & Sons
Release : 2004-04-27
ISBN : 9780471221913
Language : En, Es, Fr & De

GET BOOK

Book Description :

Fundamentals of Optical Fibers, Second Edition offers readers a timely and consistent introduction to the fundamental principles of light propagation in fibers. In it, the author reviews, in depth, fundamental wave guiding concepts, the influence of various fiber structures and materials on light transmission, nonlinear light propagation effects occurring in fibers, and various measurement techniques. Since the chief application of optical fibers is in communication systems, throughout the book the focus is on topics, which pertain to that domain.

Nonlinear Fiber Optics

Nonlinear Fiber Optics Book
Author : Govind P. Agrawal
Publisher : Unknown
Release : 2001-01-01
ISBN : 9780120451432
Language : En, Es, Fr & De

GET BOOK

Book Description :

The Optical Society of America (OSA) and SPIE - The International Society for Optical Engineering have awarded Govind Agrawal with an honorable mention for the Joseph W. Goodman Book Writing Award for his work on Nonlinear Fiber Optics, 3rd edition. Nonlinear Fiber Optics, 3rd Edition, provides a comprehensive and up-to-date account of the nonlinear phenomena occurring inside optical fibers. It retains most of the material that appeared in the first edition, with the exception of Chapter 6, which is now devoted to the polarization effects relevant for light propagation in optical fibers. The contents include such important topics as self- and cross-phase modulation, stimulated Raman and Brillouin scattering, four-wave mixing, modulation instability, and optical solutons. A proper understanding of these topics is essential for scientists and engineers interested in various aspects of lightwave technology. Such an ambitious objective increased the size of the book to the extent that it was necessary to create a separate but complimentary book, Applications of Nonlinear Fiber Optics, which is devoted to applications in the domain of lightwave technology. This revised edition of Nonlinear Fiber Optics should serve well the needs of the scientific community including graduate students in Optics, Physics, and Electrical Engineering, engineers in the optical communication industry, and scientists working in fiber optics and nonlinear optics. * Only book dealing with Nonlinear Fiber Optics * Comprehensive up-to-date coverage of the entire field * Problems at the end of each chapter suitable for a course * Focus on fundamental aspects * Can be used by graduate students doing research in or taking courses in nonlinear optics and optical communications

Scientific Computing in Electrical Engineering

Scientific Computing in Electrical Engineering Book
Author : Giuseppe Nicosia,Vittorio Romano
Publisher : Springer Nature
Release : 2020
ISBN : 3030441016
Language : En, Es, Fr & De

GET BOOK

Book Description :

This collection of selected papers presented at the 12th International Conference on Scientific Computing in Electrical Engineering, SCEE 2018, held in Taormina, Sicily, Italy, in September 2018, showcases the state of the art in SCEE. The aim of the SCEE 2018 conference was to bring together scientists from academia and industry, mathematicians, electrical engineers, computer scientists, and physicists, and to promote intensive discussions on industrially relevant mathematical problems, with an emphasis on the modeling and numerical simulation of electronic circuits and of electromagnetic fields. This extensive reference work is divided into five parts: Computational Electromagnetics, Device Modeling and Simulation, Circuit Simulation, Mathematical and Computational Methods, Model Order Reduction. Each part starts with a general introduction, followed by the respective contributions. The book will appeal to mathematicians and electrical engineers. Further, it introduces algorithm and program developers to recent advances in the other fields, while industry experts will be introduced to new programming tools and mathematical methods.

IEICE Transactions on Electronics

IEICE Transactions on Electronics Book
Author : Anonim
Publisher : Unknown
Release : 2002
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download IEICE Transactions on Electronics book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Fundamentals of Optical Waveguides

Fundamentals of Optical Waveguides Book
Author : Katsunari Okamoto
Publisher : Academic Press
Release : 2006
ISBN : 0125250967
Language : En, Es, Fr & De

GET BOOK

Book Description :

Fundamentals of Optical Waveguides is an essential resource for any researcher, professional or student involved in optics and communications engineering. Any reader interested in designing or actively working with optical devices must have a firm grasp of the principles of lightwave propagation. Katsunari Okamoto has presented this difficult technology clearly and concisely with several illustrations and equations. Optical theory encompassed in this reference includes coupled mode theory, nonlinear optical effects, finite element method, beam propagation method, staircase concatenation method, along with several central theorems and formulas. Since the publication of the well-received first edition of this book, planar lightwave circuits and photonic crystal fibers have fully matured. With this second edition the advances of these fibers along with other improvements on existing optical technologies are completely detailed. This comprehensive volume enables readers to fully analyze, design and simulate optical atmospheres. * Exceptional new chapter on Arrayed-Waveguide Grating (AWG) * In depth discussion of Photonic Crystal Fibers (PCFs) * Thorough explanation of Multimode Interference Devices (MMI) * Full coverage of polarization Mode Dispersion (PMD)

Physics Briefs

Physics Briefs Book
Author : Anonim
Publisher : Unknown
Release : 1993
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Physics Briefs book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports Book
Author : Anonim
Publisher : Unknown
Release : 1989
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Scientific and Technical Aerospace Reports book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Laser Application to Occlusive Vascular Disease

Laser Application to Occlusive Vascular Disease Book
Author : Michael W. Berns,Mahmood Mirhoseini
Publisher : Unknown
Release : 1985
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Laser Application to Occlusive Vascular Disease book written by Michael W. Berns,Mahmood Mirhoseini, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

From Analytic to Numerical Electromagnetics Contributions by C Yeh and his collaborators

From Analytic to Numerical Electromagnetics  Contributions by C  Yeh and his collaborators Book
Author : C.Yeh,F. Shimabukuro
Publisher : Dog Ear Publishing
Release : 2018-03-20
ISBN : 1457536250
Language : En, Es, Fr & De

GET BOOK

Book Description :

Based on properly organized reprints by C. Yeh and his collaborators, innovative and original solutions to a number of fundamental problems, essential to the teaching and research in modern electromagnetics, are presented in From Analytic to Numerical Electromagnetics. The wide range of coverage from general applied theory to the pioneering development of canonical solutions and numerical methods offers a rare in-depth understanding of the methods used in solving complex problems in classical and modern electromagnetics. Selected specific examples of solved problems are: New derivation of boundary conditions, conditions for scalar wave approximation, completeness of the far-zone data, correct power loss calculation, limitations of directional coupler theory, calculation of noise temperature of lossy plate, canonical solutions for elliptic, parabolic or spheroidal dielectric structures, waves in periodic medium, focused beam scattering, relativistically moving medium, terahertz low-loss waveguides, WDM optical fiber solitons, particle radiation in complex medium, and being the first to develop these numerical methods - FEM, BPM, 4x4 Matrix Method, EBCM, TLM, and 2 Point Boundary Method - to solve complex Electromagnetics problems. Readers will find the subjects covered in this book to be a useful supplement to a standard advanced textbook on electromagnetics. To researchers and engineers, From Analytic to Numerical Electromagnetics will be a valuable reference and guide to obtain solutions to problems dealing with optical communications, optical solitons, photonics, and terahertz, plasmonic, metamaterial or nano waveguides.

Official Gazette of the United States Patent and Trademark Office

Official Gazette of the United States Patent and Trademark Office Book
Author : Anonim
Publisher : Unknown
Release : 1995
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Official Gazette of the United States Patent and Trademark Office book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Encyclopedia of Modern Optics

Encyclopedia of Modern Optics Book
Author : Bob D. Guenther,Duncan Steel
Publisher : Academic Press
Release : 2018-02-14
ISBN : 0128149825
Language : En, Es, Fr & De

GET BOOK

Book Description :

The Encyclopedia of Modern Optics, Second Edition, provides a wide-ranging overview of the field, comprising authoritative reference articles for undergraduate and postgraduate students and those researching outside their area of expertise. Topics covered include classical and quantum optics, lasers, optical fibers and optical fiber systems, optical materials and light-emitting diodes (LEDs). Articles cover all subfields of optical physics and engineering, such as electro-optical design of modulators and detectors. This update contains contributions from international experts who discuss topics such as nano-photonics and plasmonics, optical interconnects, photonic crystals and 2D materials, such as graphene or holy fibers. Other topics of note include solar energy, high efficiency LED’s and their use in illumination, orbital angular momentum, quantum optics and information, metamaterials and transformation optics, high power fiber and UV fiber lasers, random lasers and bio-imaging. Addresses recent developments in the field and integrates concepts from fundamental physics with applications for manufacturing and engineering/design Provides a broad and interdisciplinary coverage of specialist areas Ensures that the material is appropriate for new researchers and those working in a new sub-field, as well as those in industry Thematically arranged and alphabetically indexed, with cross-references added to facilitate ease-of-use

Biomedical Sensors and Instruments

Biomedical Sensors and Instruments Book
Author : Tatsuo Tagawa,Toshiyo Tamura,P. Ake Oberg
Publisher : CRC Press
Release : 2011-03-22
ISBN : 1420090798
Language : En, Es, Fr & De

GET BOOK

Book Description :

The living body is a difficult object to measure: accurate measurements of physiological signals require sensors and instruments capable of high specificity and selectivity that do not interfere with the systems under study. As a result, detailed knowledge of sensor and instrument properties is required to be able to select the "best" sensor from o

Lasers in Cardiovascular Medicine and Surgery Fundamentals and Techniques

Lasers in Cardiovascular Medicine and Surgery  Fundamentals and Techniques Book
Author : George S. Abela
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 1461314895
Language : En, Es, Fr & De

GET BOOK

Book Description :

Following the advent of percutaneous balloon vel oped and are available for clinical use, as well angioplasty, interventional cardiovascular pro as those that are still in investigational phases. cedures have become of great interest to the Clinical case reports are presented by expert in cardiologist, radiologist, and cardiovascular vestigators on the use of various catheter systems surgeon. One of the most extensively explored in the coronary and peripheral circulation. alternatives to bypass surgery is laser-mediated Part V (Chapters 17-23) is the most up-to angioplasty. The fascination with laser radia date review of the clinical experience with vari tion has greatly contributed to its popularity, ous laser delivery systems. There is an emphasis but has also burdened it with unrealistic ex on patient selection, criteria for lesion choice, pectations. Many commercial laser systems are and follow-up data. A detailed description of available to the clinician and the researcher, laser recanalization techniques is presented for which often makes the choice of a laser system the various systems in the clinical setting.

Novel Optical Fiber Techniques for Medical Applications

Novel Optical Fiber Techniques for Medical Applications Book
Author : Abraham Katzir
Publisher : Unknown
Release : 1984
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Novel Optical Fiber Techniques for Medical Applications book written by Abraham Katzir, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Research Awards Index

Research Awards Index Book
Author : Anonim
Publisher : Unknown
Release : 1988
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Download Research Awards Index book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Theory of Dielectric Optical Waveguides

Theory of Dielectric Optical Waveguides Book
Author : Dietrich Marcuse
Publisher : Unknown
Release : 1991
ISBN : 0987650XXX
Language : En, Es, Fr & De

GET BOOK

Book Description :

Presents the theory underlying the technologies of optical fibre communications, integrated optics, and optical sensors. It includes new material on coupled mode theory, coupled power theory, approximate and numerical methods, nonlinear effects, and soliton propagation.