Download or read book Laser Fabricated Electro Optical Modulators in GaAs written by L. Eldada and published by . This book was released on 1992 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-speed external modulators are necessary components for impressing signals onto lightwave carriers used in optical fibers for various transmission applications in telecommunications. III-V semiconductor waveguide electro-optic modulators offer the advantage of monolithic integration, which gives them an edge over lithium niobate modulators. We have used novel laser direct-writing techniques to masklessly define waveguide and electrode structures, and have fabricated an electro-optic polarization modulator in GaAs/AlGaAs. Our modulator exhibits a high extinction ratio and low value of Vpi.
Download or read book Semiconductor Optical Modulators written by Koichi Wakita and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of GaAs/ AIGaAs double heterostructure lasers has opened the door to a new age in the application of compound semiconductor materials to microwave and optical technologies. A variety and combination of semiconductor materials have been investigated and applied to present commercial uses with these devices operating at wide frequencies and wavelengths. Semiconductor modulators are typical examples of this technical evolutions and hsve been developed for commercial use. Although these have a long history to date, we are not aware of any book that details this evolution. Consequently, we have written a book to provide a comprehensive account of semiconductor modulators with emphasis on historical details and experimantal reports. The objective is to provide an up-to-date understanding of semiconductor modulators. Particular attention has been paid to multiple quantum well (MQW) modulators operating at long wavelengths, taking into account the low losses and dispersion in silica fibers occuring at around 1.3 and 1.55 mm. At the present time, MQW structures have been investigated but these have not been sufficiently developed to provide characteristic features which would be instructive enough for readers. One problem is the almost daily publication of papers on semiconductor modulators. Not only do these papers provide additional data, but they often modify the interpretations of particular concepts. Almost all chapters refer to the large number of published papers that can be consulted for future study.
Download or read book Development of a 10 6 micron Laser Modulator written by E. Hirschmann and published by . This book was released on 1967 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electro optic Light Modulators written by E. Hirschmann and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrooptical Devices written by Dean Z. Tsang and published by . This book was released on 1983 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: The frequency response of an optical guided-wave GaAs interferometer has been measured. The bandwidth of the interferometer biased at a null point was 2.2 GHz, limited by parasites. A small-signal bandwidth of approx 3 GHz can be inferred from this measurement for the case where the interferometer is biased to a linear operating point. This is the highest bandwidth yet reported for a guided-wave GaAs modulator. A surface-emitting GaInAsP/InP laser has been developed in which a monolithically integrated parabolic mirror is used to up-deflect the output of a buried-heterostructure laser. A threshold current as low as 12 mA and a differential quantum efficiency as high as 46 percent have been obtained. GaInAsP/InP distributed feedback lasers have been fabricated with a simple new design in which the grating is etched into the top of a mass-transported buried heterostructure. Single-frequency operation with side modes lower than -32 dB and threshold currents as low as 16 mA has been achieved. Single-mode InP p+-n--n+ slab-coupled rib waveguides capable of phase modulating, TE-polarized, 1.3-micrometer radiation have been fabricated. These guides should prove useful in the fabrication of two-guide coupler switches and interferometric modulators. Keywords: Electrooptical devices, Laser, Surface emitting laser, Interferometer modulator, Lasers buried heterostructure.
Download or read book High Speed Photonic Devices written by Nadir Dagli and published by CRC Press. This book was released on 2006-09-29 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the ongoing, worldwide installation of 40 Gbit/s fiber optic transmission systems, there is an urgency to learn more about the photonic devices supporting this technology. Focusing on the components used to generate, modulate, and receive optical signals, High-Speed Photonic Devices presents the state-of- the-art enabling technologies behind h
Download or read book Broadband Optical Modulators written by Antao Chen and published by CRC Press. This book was released on 2016-04-19 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: "provides the full, exciting story of optical modulators. a comprehensive review, from the fundamental science to the material and processing technology to the optimized device design to the multitude of applications for which broadband optical modulators bring great value. Especially valuable in my view is that the authors are internationally
Download or read book Optoelectronic Integration Physics Technology and Applications written by Osamu Wada and published by Springer Science & Business Media. This book was released on 1994-05-31 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: By combining optoelectronics with electronics, optoelectronic integration is the challenging merger of many different areas of science and technology. Optoelectronic Integration: Physics, Technology, and Applications presents the basic physics, materials, fabrication techniques, and systems applications of optoelectronic integration in a concise and organized form. Comprehensive and up to date, this book describes fundamental device physics and III-V semiconductor growth and processing; covers the basic design and integration of lasers, photodetectors, waveguides, and transistors; reviews and analyzes optoelectronic integrated circuits (OEICs), photonic integrated circuits (PICs), and vertical optoelectronic functional device arrays; discusses packaging and systems architecture for applications in optical telecommunications, interconnections and signal processing. With numerous cross-references, end-of-chapter references, and extended summaries identifying key issues and prospects in each technical area, Optoelectronic Integration: Physics, Technology, and Applications is an invaluable reference for engineers, scientists and students working in optoelectronics.
Download or read book Fabrication and Assessment of GaAs AlGaAs Multiple Quantum Well Optical Modulators written by Karen McIlvaney and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Optical Engineering Pho Z pages 2049 3050 written by Ronald G. Driggers and published by CRC Press. This book was released on 2003 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiled by 330 of the most widely respected names in the electro-optical sciences, the Encyclopedia is destined to serve as the premiere guide in the field with nearly 2000 figures, 560 photographs, 260 tables, and 3800 equations. From astronomy to x-ray optics, this reference contains more than 230 vivid entries examining the most intriguing technological advances and perspectives from distinguished professionals around the globe. The contributors have selected topics of utmost importance in areas including digital image enhancement, biological modeling, biomedical spectroscopy, and ocean optics, providing thorough coverage of recent applications in this continually expanding field.
Download or read book Integrated Optics Theory and Technology written by Robert G. Hunsperger and published by Springer. This book was released on 2013-06-05 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professor Hunsperger's Integrated Optics is one of the few texts that is comprehensive and thorough enough for use both as a classroom text (practice problems are included) and as a specialist's reference. The gratifying success of the first two editions and the continuing rapid development of the field necessitated the writing of this third edition. All chapters have been revised and updated, and a new chapter, on quantum well devices, has been added. As in the previous editions, detailed descriptions of the phenomena, devices, and technology used in optical integrated circuits and their relationship to fiber optics are presented. The trend of telecommunications toward the use of single mode systems operating at the longer wavelengths of 1.3 and 1.55 μm is explained and documented with illustrations of recently developed devices and systems. Broader coverage of GaInAsP devices and optical integrated circuits is provided, and the new growth tech- niques of molecular beam epitaxy (MBE) and metal-organic chemical vapor deposition (MOCVD) are described. A discussion of the extensive development of hybrid optical integrated circuits in lithium niobate is also included. From the reviews: I never had the opportunity of using Hunsperger as a text to teach from but after reading the present third edition, I think it must be a pleasure to do so. It is a good book because of its precise language and its didactic organization (with many clear tables), it is exhaustive in its details, and rigorous in its background; it is well suited for a graduate-level course.
Download or read book Nanofabrication Technologies and Device Integration written by Wolfgang Karthe and published by . This book was released on 1994 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystal Optics Properties and Applications written by Ashim Kumar Bain and published by John Wiley & Sons. This book was released on 2019-05-29 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the properties and applications of photo-elastic, acousto-optic, magneto-optic, electro-optic, and photorefractive materials This book deals with the basic physical properties and applications of photo-elastic, acousto-optic, magneto-optic, electro-optic, and photorefractive materials. It also provides up-to-date information on the design and applications of various optoelectronic devices based on these materials. The first chapter of Crystal Optics: Properties and Applications covers the basic concepts of crystal optics, such as index ellipsoid or optical indicatrix, crystal symmetry, wave surface, birefringence, and the polarization of light. Chapter 2 reviews the physical phenomena of crystal optics in isotropic and crystalline materials. It describes in detail research information on modern photoelastic materials and reviews the up-to-date photoelastic device applications. Chapter 3 develops the underlying theory of acousto-optics from first principles, formulating results suitable for subsequent calculations and design. The fourth chapter describes the basic principles of magneto-optic effects and mode of interaction with magnetic materials. The fifth chapter provides an understanding of the physical phenomenon of the linear and quadratic electro-optic effects in isotropic and crystalline materials. The last chapter collects many of the most important recent developments in photorefractive effects and materials, and pays special attention to recent scientific findings and advances on photorefractive materials and devices. -Features up to date information on the design and applications of various optoelectronic devices -Looks at the basic concepts of crystal optics, including the polarization of light, effects of reflection and transmission of polarization and light polarizing devices, and more -Pays special attention to design procedures for the entire range of acousto-optic devices and various applications of these devices -Provides research information on modern magneto-optic materials and reviews the up-to-date magneto-optic device applications?up to terahertz (THz) regime Crystal Optics: Properties and Applications is an excellent book for the scientific community working in the field, including researchers, lecturers, and advanced students.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrashort Processes in Condensed Matter written by Walter E. Bron and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Study Institute (AS!) considered a number offacets of the very rapidly advancing field of theoretical and experimental aspects of ultrashort processes in condensed matter. Common threads exist between a series of example cases. One major subgroup of topics involves the ultrashort dynamics of excitations of various "particles" produced through the interactions of condensed matter with ultrashort duration laser light. Examples ofthe excitations include electronic and hole carriers, electron-hole plasma, phonons, vibrons and rotons, two phonon states, and excitons. Experimentation on the dynamics of such excitations, are carried out in the bulk, at surfaces, in thin films, and in quantum wells. The dynamical steps which the excitations usually undergo include photo-excitation, local thermalization, particle-particle interaction, particle phonon interactions and eventual return to true thermal equilibrium. This ASI was organized to benefit particularly advanced graduate students, specifically, those near the end of their Ph.D. thesis projects, and also for postdoctoral scholars already active in the field. The overall organizational goal was centered around a set oftutorially based lectures intermingled with full scale discussion periods of equal time and importance as the lectures. The general discussion periods were designed to offer to the participants ample time to ask detailed questions and to make comments and contributions of their own. In order to complete the involvement of the participants a full length poster session was also held. A representative set of abstracts of these posters appear as an Appendix to the lectures.
