Download or read book Design Considerations for Ge on Si Waveguide Photodetector written by Goran Živanović and published by . This book was released on 2014 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: In integrated photonic circuits photodetector is one of key components, modern applications require that photodetector has a high 3 dB bandwidth. The ultimate limit for the response time for conventional photodetectors (like vertically illuminated photodiode, Schotky photodiode, MSM photodetector etc.) is given by the transit time of the photogenerated electron-hole pairs, it can not be minimised by decreasing the thickness of the depletion region without reducing quantum efficiency (i.e. the fraction of the incident light that is absorbed). Waveguide photodetectors have been developed to overcome this trade-off. In the waveguide photodetector light propagates in a direction that is parallel to the junction interfaces and is perpendicular to the drift of the generated electron-hole pairs. This geometry decouples absorption length from the drift length. Therefore the waveguide photodetector can have both a very thin active region for short transit time and a long absorption length for a high quantum efficiency. In this thesis , I designed germanium on silicon photodetector. The main designing tool was full vectorial 3D Finite Difference Time Domain (FDTD) simulator. Bandwidth-efficiency product was used as the main figure of merit. The input is silicon rib waveguide, which is optimised to maximize transmitted power. For optimal dimensions of the device calculated responsivity is 0.94 A/W, efficiency is 83 %, bandwidth is 64 GHz and bandwidth x efficiency product is 53 GHz.
Download or read book Photodetectors written by and published by Woodhead Publishing. This book was released on 2015-10-24 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photodetectors: Materials, Devices and Applications discusses the devices that convert light to electrical signals, key components in communication, computation, and imaging systems. In recent years, there has been significant improvement in photodetector performance, and this important book reviews some of the key advances in the field. Part one covers materials, detector types, and devices, and includes discussion of silicon photonics, detectors based on reduced dimensional charge systems, carbon nanotubes, graphene, nanowires, low-temperature grown gallium arsenide, plasmonic, Si photomultiplier tubes, and organic photodetectors, while part two focuses on important applications of photodetectors, including microwave photonics, communications, high-speed single photon detection, THz detection, resonant cavity enhanced photodetection, photo-capacitors and imaging. Reviews materials, detector types and devices Addresses fabrication techniques, and the advantages and limitations and different types of photodetector Considers a range of application for this important technology Includes discussions of silicon photonics, detectors based on reduced dimensional charge systems, carbon nanotubes, graphene, nanowires, and more
Download or read book Photodetectors written by Bahram Nabet and published by Woodhead Publishing. This book was released on 2023-02-10 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every bit of information that circulates the internet across the globe is a pulse of light, that at some point will need to be converted to an electric signal in order to be processed by the electronic circuitry in our data centers, computers, and cell phones. Photodetectors (PD's) perform this conversion with ultra high speed and efficiency, in addition to being ubiquitously present in many other devices ranging from the mundane TV remote controls, to ultra high resolution instrumentation used in Laser Interferometer Gravitational Wave Observatory (LIGO) that reach the edge of the universe and measure gravitational waves. The second edition of "Photodetectors" fully updates the popular first edition with updated information covering the state-of-the-art in modern photodetectors. The 2nd edition starts with basic metrology of photodetectors and common figures-of-merit to compare various devices. It follows with chapters that discuss single-photon detection with Avalanche Photodiodes; organic photodetectors that can be inkjet printed; and silicon-germanium PDs popular in burgeoning field of Silicon Photonics. Internationally recognized experts contribute chapters on one-dimensional, nanowire, PDs as well as high speed zero-dimensional, quantum dot, versions that increase the spectral span as well as speed and sensitivity of PDs and can be produced on various substrates. Solar-blind PDs that operate in harsh environments such as deep space, or rocket engines, are reviewed and new devices in GaN technology . Novel Plasmonic PDs, as well as devices which employ micro-plasma of confined charge in order to make devices that overcome speed limitation of transfer of electronic charge, are covered in other chapters. Using different, novel technologies, CMOS compatible devices are described in two chapters, and ultra high speed PDs that use low-temperature-grown GaAs (LT-GaAs) to detect fast THz signals are reviewed in another chapter. Photodetectors used in application areas of Silicon-Photonics and Microwave-Photonics are reviewed in final chapters of this book. All chapters are of a review nature, providing a perspective of the field before concentrating on particular advancements. As such, the book should appeal to a wide audience that ranges from those with general interest in the topic, to practitioners, graduate students and experts who are interested in the state-of-the-art in photodetection. - Addresses various photodetector devices from ultra high speed to ultra high sensitivity, capable of operation in harsh environments - Considers a range of applications for this important technology, including silicon photonics and photonic integrated circuits - Includes discussions of detectors based on reduced dimensional systems such as quantum wells, nanowires, and quantum dots, as well as travelling wave, and plasmonic detectors
Download or read book Design Optimization of Ge on Si Photodetector written by Himadri Sekhar Dutta and published by LAP Lambert Academic Publishing. This book was released on 2014-03 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, extensive researches are going on high-speed low-noise photodetectors for optical communication. A photodetector plays a critical role in the overall performance of the system. III-V based photodetectors for high-performance communication system have already been reported.But, the technology is very expensive.Si is an obvious choice in such cases.Si technology has also the advantage of high reliability and high integrability. However, Si band-gap is not suitable for photodetection around the long-haul communication wavelength.Ge is a good candidate for designing such photodetectors(PD), given its smaller direct energy band-gap, and compatibility with Si. Si and Ge can also be combined to design PD at variable wavelengths.Here a physics based model is developed and then solved analytically or numerically by the appropriate initial and boundary conditions. The simulated results are then be verified with experimental data. The various performance of the PD are studied here. Finally the design optimization are carried out by choosing an appropriate objective function.This book is very much useful for Ph.D, M.Tech and B.Tech students of ECE branc
Download or read book Handbook of Silicon Photonics written by Laurent Vivien and published by CRC Press. This book was released on 2013-04-26 with total page 855 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, multiplexers, light sources, and various subsystems, have been developed that take advantage of state-of-the-art silicon technology. Suitable for both specialists and newcomers, Handbook of Silicon Photonics presents a coherent and comprehensive overview of this field from the fundamentals to integrated systems and applications. It covers a broad spectrum of materials and applications, emphasizing passive and active photonic devices, fabrication, integration, and the convergence with CMOS technology. The book’s self-contained chapters are written by international experts from academia and various photonics-related industries. The handbook starts with the basics of silicon as an optical material. It then describes the building blocks needed to drive integrated silicon photonic circuits and explains how these building blocks are incorporated in complex photonic/electronic circuits. The book also presents applications of silicon photonics in numerous fields, including biophotonics and photovoltaics. With many illustrations, including some in color, this handbook provides an up-to-date reference to the broad and rapidly changing area of silicon photonics. It shows how basic science and innovative technological applications are pushing the field forward.
Download or read book Proceedings of SIE 2022 written by Giuseppe Cocorullo and published by Springer Nature. This book was released on 2023-02-27 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book showcases the state of the art in the field of electronics, as presented by researchers and engineers at the 53rd Annual Meeting of the Italian Electronics Society (SIE), held in Rende (CS), Italy, on September 5-7, 2022. It covers a broad range of aspects, including: integrated circuits and systems, micro- and nano-electronic devices, microwave electronics, sensors and microsystems, optoelectronics and photonics, power electronics, electronic systems and applications.
Download or read book SiGe Ge and Related Compounds 6 Materials Processing and Devices written by D. Harame and published by The Electrochemical Society. This book was released on with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Engineering written by and published by . This book was released on 2005 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes papers reporting on research and development in optical science and engineering and the practical applications of known optical science, engineering, and technology.
Download or read book Micro optics VCSELs and Photonic Interconnects written by and published by . This book was released on 2004 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fabrication Design and Noise Analysis of a High gain Waveguide coupled Photoconductive Detector written by Nicholas C. Harris and published by . This book was released on 2012 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the field of silicon photonics, it has only recently become possible to build complex systems. As system power constraints and complexity increase, design margins will decrease--making understanding device noise performance and device-specific noise origins increasingly necessary. Approaches to increased photodetector responsivity are also of great importance, since they can significantly improve overall system performance. The design, theory, fabrication and testing of a waveguide-coupled germanium MSM photodetector with an above-unity quantum efficiency of approximately 140% is presented, capable of 1.1 GHz operation. The current amplification comes from the photoconductive multiplication effect. The noise elbow at 5V bias is measured to be approximately 150MHz and the high frequency detector noise approaches the Johnson noise floor. I demonstrate for the first time that Ge on Si based photoconductors are not limited by shot noise, as conventional PIN detectors are, but in fact achieve lower noise figures of merit.
Download or read book Waveguide integrated Germanium Photodetector Design and Optimization for Sensing and Telecom Applications written by Hasan Fırat Yıldız and published by . This book was released on 2021 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress in Optics written by and published by Elsevier. This book was released on 1993-12-13 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume XXXII contains a number of review articles on recent developments in optics and related subjects. The first article presents an account of guided wave optics on silicon which is a subject of considerable current interest in the broad field of integrated optics, likely to influence the design and fabrication of various optical components. Chapter two provides an overview of the optical implementation of neural networks and discusses their design, models and architecture. The following article deals with applications of the path integral technique to the theory of wave propagation in random media, a technique used with considerable success in the last two decades for solutions of problems encountered in classical statistical wave theory. Methods for obtaining information on the relative location of objects in space are considered in the following chapter and includes an analysis of the potential accuracy and reliability of object location in the presence of additive Gaussian noise and a discussion of optical filters for localization of objects under various circumstances. The fifth article deals with the broad topic of radiation from uniformly moving sources. It considers the Vavilov-Cerenkov radiation, the Doppler effect in media, transition radiation and bremsstralung. These phenomena are of particular importance in the electrodynamics of continuous media, especially in a plasma. In the concluding article nonlinear optical plasmas in atoms and weakly relativistic plasmas are considered. The emphasis is on the specific properties of laser radiation that are important for inducing multiphoton processes and on nonlinear interactions of very intense laser pulses with electrons. All the articles are written by leading authorities in their respective fields, from all over the world.
Download or read book Semiconductor Technologies written by Jan Grym and published by BoD – Books on Demand. This book was released on 2010-04-01 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor technologies continue to evolve and amaze us. New materials, new structures, new manufacturing tools, and new advancements in modelling and simulation form a breeding ground for novel high performance electronic and photonic devices. This book covers all aspects of semiconductor technology concerning materials, technological processes, and devices, including their modelling, design, integration, and manufacturing.
Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1997 with total page 1462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.
Download or read book Photonic Integration and Photonics Electronics Convergence on Silicon Platform written by Koji Yamada and published by Frontiers Media SA. This book was released on 2015-11-10 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon photonics technology, which has the DNA of silicon electronics technology, promises to provide a compact photonic integration platform with high integration density, mass-producibility, and excellent cost performance. This technology has been used to develop and to integrate various photonic functions on silicon substrate. Moreover, photonics-electronics convergence based on silicon substrate is now being pursued. Thanks to these features, silicon photonics will have the potential to be a superior technology used in the construction of energy-efficient cost-effective apparatuses for various applications, such as communications, information processing, and sensing. Considering the material characteristics of silicon and difficulties in microfabrication technology, however, silicon by itself is not necessarily an ideal material. For example, silicon is not suitable for light emitting devices because it is an indirect transition material. The resolution and dynamic range of silicon-based interference devices, such as wavelength filters, are significantly limited by fabrication errors in microfabrication processes. For further performance improvement, therefore, various assisting materials, such as indium-phosphide, silicon-nitride, germanium-tin, are now being imported into silicon photonics by using various heterogeneous integration technologies, such as low-temperature film deposition and wafer/die bonding. These assisting materials and heterogeneous integration technologies would also expand the application field of silicon photonics technology. Fortunately, silicon photonics technology has superior flexibility and robustness for heterogeneous integration. Moreover, along with photonic functions, silicon photonics technology has an ability of integration of electronic functions. In other words, we are on the verge of obtaining an ultimate technology that can integrate all photonic and electronic functions on a single Si chip. This e-Book aims at covering recent developments of the silicon photonic platform and novel functionalities with heterogeneous material integrations on this platform.
Download or read book Optoelectronics Materials and Devices for Communications written by Tien-Pei Lee and published by SPIE-International Society for Optical Engineering. This book was released on 2001 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Wireless Communications written by Roberto Ramirez-Iniguez and published by CRC Press. This book was released on 2008-04-03 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last three decades, interest in Infrared (IR) technology as a medium to convey information has grown considerably. This is reflected by the increasing number of devices such as laptops, PDAs, and mobile phones that incorporate optical wireless transceivers and also by the increasing number of optical wireless links available for indoor and
