Download or read book Integrated Optical Sensors Utilizing Slow light Propagation in Grated waveguide Cavities written by Pham Van So and published by . This book was released on 2012 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Optical Sensors Using Waveguide Grating Reflectors written by John Chin-Hsiang Lin and published by . This book was released on 1994 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Planar Waveguide Optical Sensors written by Aradhana Dutta and published by Springer. This book was released on 2016-08-30 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book concentrates on the design and development of integrated optic waveguide sensors using silicon based materials. The implementation of such system as a tool for detecting adulteration in petroleum based products as well as its use for detection of glucose level in diabetes are highlighted. The first chapters are dedicated to the development of the theoretical model while the final chapters are focused on the different applications of such sensors. It gives the readers the full background in the field of sensors, reasons for using silicon oxynitride as a potential waveguide material as well as its fabrication processes and possible uses.
Download or read book Coherent Control of Light Propagation in Integrated Optical Waveguides written by Ricard Menchón Enrich and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optics Letters written by and published by . This book was released on 2008 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Photoluminescence Hollow Waveguide Platforms for High sensitivity Integrated Optical Sensors written by Yue Zhao and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents research on the fabrication of optofluidic sensor platforms, which consist of integrated hollow waveguides and solid waveguides. Antiresonant reflecting optical waveguides (ARROWs) filled with liquids or gases, can be used for high-sensitivity sensing in applications of biotechnology, chemical synthesis, and analytical chemistry. The fabrication method developed for integrated ARROW sensing platforms utilizes standard microfabrication processes and materials. Dielectric cladding layers are deposited on a silicon wafer using plasma-enhanced chemical vapor deposition (PECVD) or sputtering. A sacrificial material is then patterned over the bottom cladding layers by photolithography. Additional dielectric layers are deposited around the core, forming the structure of the waveguides. Integrated solid-core waveguides can be easily created by etching a ridge into the topmost dielectric cladding layer. The hollow core waveguides are then formed by wet etching the sacrificial core material.
Download or read book Compact Coupled Optical Resonators and Their Applications written by Wenqiong Guo and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical resonators can slow down light by utilizing the interference between light waves. This makes them a technology of great significance. Thanks to the emergence of silicon photonics, on-chip optical resonator devices have seen an unprecedented reduction in footprint and a high level of integration. Coupled resonator optical waveguides (CROW), which consist of a chain of optically coupled cavities, are one of the widely studied and most promising structures. They exhibit unique abilities to support broadband slow light and dynamic tunability, which have important applications in many branches of photonics. These features, however, generally require coupling a large number (N) of resonators, which compromises compactness and thermal stability. In this work, we introduce two new classes of optical interferometers that exhibit properties similar to CROWs, while occupying a much smaller area (1/N) and being consequently more stable against temperature gradient. First, we propose the coupled spiral interferometer (CSPIN), which consists of a planar waveguide coiled into a spiral. The distance between the spiral's adjacent arms is small enough that light is continuously coupled between them. This distributed coupling gives CSPINs a distinct set of properties, some similar to those of ring resonators and CROWs, and others unique. Their actual behavior depends on the number of arms and the intra-arm coupling distribution. Besides the main advantage of greater compactness and stability, simulations show that as a result of the waveguides' inherent mode-index dispersion, any intra-arm coupling coefficient acts as critical coupling (maximum energy storage) at selected wavelengths. Similarly, a CSPIN can be designed as a sensor with a sensitivity that is maximum for any value of the intra-arm coupling, provided the wavelength of the light interrogating the sensor is suitably selected. Second, we study the nested coupled resonant optical waveguides (nested CROW). It consists of a set of concentric rings with decreasing radii. The rings are located inside each other with very small spacing, so light can continuously couple between them. A nested CROW behaves like a ring resonator when the intra-ring coupling is weak, and like a CSPIN and a CROW when the coupling is strong. A unique aspect of the nested CROW is that its resonant wavelengths depend on the intra-ring coupling. When the propagation loss is relatively small, any value of strong coupling is the critical coupling for a set of resonant wavelengths. Increasing the number of rings creates more resonance peaks. By selecting appropriate intra-ring couplings, a nested CROW can also exhibit broadband transmission window that has flat top and sharp roll-off. In this thesis work we compared the sensitivity of a CSPIN and a nested CROW to existing resonators, including a CROW and a single-ring resonator with the same radius and loss coefficient. After optimizing each device individually for maximum sensitivity (by selecting the optimum intra-ring or intra-arm coupling and optimum interrogating wavelength), we show that coupling resonators together (as in a CROW, a CSPIN or a nested CROW) does not increase the device's sensitivity. These resonators all exhibit the same optimal sensitivity as a single-ring resonator with the same radius and loss. When applied to the particular case of rotation sensing using the Sagnac effect, we confirmed through numerical simulations that the sensitivity to rotation is independent of the number of arms in the CSPIN, and exactly the same as the sensitivity to rotation of a ring resonator. The last part of this thesis describes the fabrication and characterization of the first experimental CSPINs. The devices are made with silicon waveguides with sub-micron transverse dimensions on a silica substrate, with a spiral radius of 150 μm and either two or three arms. They were found to exhibit the resonance spectra predicted by theory. Measurements confirm that the sensitivity of a CSPIN with modal index dispersion is independent of the intra-arm coupling. This property gives the CSPIN a significant edge over other resonator-based sensors, which require careful adjustment of the coupling ratio, a difficult task with low reproducibility in practice.
Download or read book Index to IEEE Publications written by Institute of Electrical and Electronics Engineers and published by . This book was released on 1989 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1973- cover the entire IEEE technical literature.
Download or read book Frontiers in Optics and Photonics written by Federico Capasso and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-06-08 with total page 783 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a cutting-edge research overview on the latest developments in the field of Optics and Photonics. All chapters are authored by the pioneers in their field and will cover the developments in Quantum Photonics, Optical properties of 2D Materials, Optical Sensors, Organic Opto-electronics, Nanophotonics, Metamaterials, Plasmonics, Quantum Cascade lasers, LEDs, Biophotonics and biomedical photonics and spectroscopy.
Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 2240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transverse Patterns in Nonlinear Optical Resonators written by Kestutis Staliunas and published by Springer Science & Business Media. This book was released on 2003-02-27 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth of regularity from disorder, the evolution from the simple towards the complex, and the spontaneous formation of spatio temporal patterns in general are questions which intrigue everybody. This has been one of the hasic philosophical topics from ancient to modern times. Is nature able to create something fundamentally new by itself? If yes, how does this creation occurs? Or does nature only reproduce something which was already encoded in it, from the very beginning? This remained a topic exclusively for philoso phers until very recently, and it was only a few decades a. go that physicists started to convert this seemingly purely philosophical subject into a scientific discipline: a scientific discipline like other scientific disciplines, where one re lies on formulas and equations, on nunlerical simulations, and on laboratory experiments. This book is not about general questions related to pattern formation and self organization in nature. It is about spontaneous patterns in just one part of nature in nonlinear optical systems, and, more precisely, in nonlinear optical resonators. Nonlinear optical systems represent a small part of nature, hut a very representative part: one can observe here nearly all the known symmetries of patterns, one can generate nearly all known types of localized strlictlires and one can realize nearly all known spatial instabilities and spatial bifurcations.
Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1874 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Engineering Index Annual written by and published by . This book was released on 1992 with total page 2264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its creation in 1884, Engineering Index has covered virtually every major engineering innovation from around the world. It serves as the historical record of virtually every major engineering innovation of the 20th century. Recent content is a vital resource for current awareness, new production information, technological forecasting and competitive intelligence. The world?s most comprehensive interdisciplinary engineering database, Engineering Index contains over 10.7 million records. Each year, over 500,000 new abstracts are added from over 5,000 scholarly journals, trade magazines, and conference proceedings. Coverage spans over 175 engineering disciplines from over 80 countries. Updated weekly.
Download or read book Optics Index written by and published by . This book was released on 1990 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Optics Theory and Technology written by Robert G. Hunsperger and published by Springer. This book was released on 2013-11-11 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our intent in producing this book was to provide a text that would be comprehensive enough for an introductory course in integrated optics, yet concise enough in its mathematical derivations to be easily readable by a practicing engineer who desires an overview of the field. The response to the first edition has indeed been gratifying; unusually strong demand has caused it to be sold out during the initial year of publication, thus providing us with an early opportunity to produce this updated and improved second edition. This development is fortunate, because integrated optics is a very rapidly progressing field, with significant new research being regularly reported. Hence, a new chapter (Chap. 17) has been added to review recent progress and to provide numerous additional references to the relevant technical literature. Also, thirty-five new problems for practice have been included to supplement those at the ends of chapters in the first edition. Chapters I through 16 are essentially unchanged, except for brief updating revisions and corrections of typographical errors. Because of the time limitations imposed by the need to provide an uninterrupted supply of this book to those using it as a course text, it has been possible to include new references and to briefly describe recent developments only in Chapter 17. However, we hope to provide details of this continuing progress in a future edition.
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
