Download or read book Sensors and Structured Beams in Optical Coherence Tomography written by Eun Song Kim and published by . This book was released on 2017 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical coherence tomography (OCT) is an emerging medical imaging technique that provides images of various tissue structures at micrometer scale resolution. A swept source laser which emits time-varying wavelengths light at a high-speed was developed that greatly improves OCT processing speed and image resolution. This dissertation presents system developments for swept source based OCT. I have designed and demonstrated three different OCT systems that can be used for diagnostic applications. First, I present a common-path OCT system with a cleaved optical fiber as a probe. The system is built as a tactile sensor for implementation in surgical robots. A tactile sensor, often referred to as a force sensor, is a device that is sensitive to applied force or pressure. Since the system has a high sensitivity to pressure and a compact size, the sensor is compatible with the surgical robots field which require fine force control. This new sensor may aid in diagnosing diseased tissue or cells by measuring their Young' s modulus. Secondly, an Angular/Longitudinal Doppler OCT system (ALD-OCT) was constructed to sense the rotation of an object. Previous work has shown, it is feasible to detect a linearly moving object by Doppler OCT. However, ALD-OCT, OCT utilizes a helical phase shape beam that, has been studied due to its distinct characteristics. An application of using a vortex beam is sensing a rotating object by measuring the angular Doppler shift from the beam reflected off the object. ALD-OCT can utilize depth resolved analysis and be implemented to detect helical shaped particles or the vorticity of blood flows under the skin or in the retina noninvasively. Lastly, we propose several designs of optical probes for a swept source OCT system. The designs of the GRIN lens bundle probes were presented to demonstrate angled illumination and detection techniques in OCT systems. The beam profiles of the output beams from the probes were analyzed theoretically using ABCD ray matrices. We present a method to measure the beam profile of a sweeping wavelength laser source, which can be applied to measure any optical probes connected to the swept source laser.
Download or read book High Resolution Imaging in Microscopy and Ophthalmology written by Josef F. Bille and published by Springer. This book was released on 2019-08-13 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book provides a comprehensive overview of the application of the newest laser and microscope/ophthalmoscope technology in the field of high resolution imaging in microscopy and ophthalmology. Starting by describing High-Resolution 3D Light Microscopy with STED and RESOLFT, the book goes on to cover retinal and anterior segment imaging and image-guided treatment and also discusses the development of adaptive optics in vision science and ophthalmology. Using an interdisciplinary approach, the reader will learn about the latest developments and most up to date technology in the field and how these translate to a medical setting. High Resolution Imaging in Microscopy and Ophthalmology – New Frontiers in Biomedical Optics has been written by leading experts in the field and offers insights on engineering, biology, and medicine, thus being a valuable addition for scientists, engineers, and clinicians with technical and medical interest who would like to understand the equipment, the applications and the medical/biological background. Lastly, this book is dedicated to the memory of Dr. Gerhard Zinser, co-founder of Heidelberg Engineering GmbH, a scientist, a husband, a brother, a colleague, and a friend.
Download or read book Handbook of Optical Sensors written by Jose Luis Santos and published by CRC Press. This book was released on 2014-10-29 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Optical Sensors provides a comprehensive and integrated view of optical sensors, addressing the fundamentals, structures, technologies, applications, and future perspectives. Featuring chapters authored by recognized experts and major contributors to the field, this essential reference: Explains the basic aspects of optical sensors and the principles of optical metrology, presenting a brief historical review Explores the role of optical waveguides in sensing and discusses sensor technologies based on intensity and phase modulation, fluorescence, and plasmonic waves Describes wavefront sensing, multiphoton microscopy, and imaging based on optical coherence tomography Covers optical fiber sensing, from light guiding in standard and microstructured optical fibers to sensor multiplexing, distributed sensing, and fiber Bragg grating Offers a broad perspective of the field and identifies trends that could shape the future, such as metamaterials and entangled quantum states of light Handbook of Optical Sensors is an ideal resource for practitioners and those seeking optical solutions for their specific needs, as well as for students and investigators who are the intellectual driving force of optical sensing.
Download or read book Smart Sensors for Structural Health Monitoring written by Simon Laflamme and published by MDPI. This book was released on 2019-11-13 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart sensors are technologies designed to facilitate the monitoring operations. For instance, power consumption can be minimized through on-board processing and smart interrogation algorithms, and state detection enhanced through collaboration between sensor nodes. Applied to structural health monitoring, smart sensors are key enablers of sparse and dense sensor networks capable of monitoring full-scale structures and components. They are also critical in empowering operators with decision making capabilities. The objective of this Special Issue is to generate discussions on the latest advances in research on smart sensing technologies for structural health monitoring applications, with a focus on decision-enabling systems. This Special Issue covers a wide range of related topics such as innovative sensors and sensing technologies for crack, displacement, and sudden event monitoring, sensor optimization, and novel sensor data processing algorithms for damage and defect detection, operational modal analysis, and system identification of a wide variety of structures (bridges, transmission line towers, high-speed trains, masonry light houses, etc.).
Download or read book Optical Coherence Tomography written by Wolfgang Drexler and published by Springer Science & Business Media. This book was released on 2008-12-10 with total page 1346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical coherence tomography (OCT) is the optical analog of ultrasound imaging and is emerging as a powerful imaging technique that enables non-invasive, in vivo, high resolution, cross-sectional imaging in biological tissue. This book introduces OCT technology and applications not only from an optical and technological viewpoint, but also from biomedical and clinical perspectives. The chapters are written by leading research groups, in a style comprehensible to a broad audience.
Download or read book Photonic Sensing written by Gaozhi Xiao and published by John Wiley & Sons. This book was released on 2012-10-02 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: PHOTONIC SENSING A cutting-edge look at safety and security applications of photonic sensors With its many superior qualities, photonic sensing technology is increasingly used in early-detection and early-warning systems for biological hazards, structural flaws, and security threats. Photonic Sensing provides for the first time a comprehensive review of this exciting and rapidly evolving field, focusing on the development of cutting-edge applications in diverse areas of safety and security, from biodetection to biometrics. The book brings together contributions from leading experts in the field, fostering effective solutions for the development of specialized materials, novel optical devices, and networking algorithms and platforms. A number of specific areas of safety and security monitoring are covered, including background information, operation principles, analytical techniques, and applications. Topics include: Document security and structural integrity monitoring, as well as the detection of food pathogens and bacteria Surface plasmon sensors, micro-based cytometry, optofluidic techniques, and optical coherence tomography Optic fiber sensors for explosive detection and photonic liquid crystal fiber sensors for security monitoring Photonics-assisted frequency measurement with promising electronic warfare applications An invaluable, multidisciplinary resource for researchers and professionals in photonic sensing, as well as safety and security monitoring, this book will help readers jump-start their own research and development in areas of physics, chemistry, biology, medicine, mechanics, electronics, and defense.
Download or read book Optical Sensors for Structural Health Monitoring written by Paulo Antunes and published by MDPI. This book was released on 2021-03-12 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution and need for the preservation and maintenance of existing structures, recent or historical, has fostered research in the area of structural monitoring, translated into the development of new techniques, equipment and sensors. Early detection of damage and accurate assessment of structural safety requires monitoring systems, the data from which can be used to calibrate numerical models for structural analysis and to assess safety. Data are obtained under real-time conditions, considering a group of parameters related to structural properties, such as stresses, accelerations, deformations and displacements. The analysis of structural properties is particularly relevant when the structure is subjected to extreme events (earthquakes, wind, fire and explosions, among others) or repeated loads (road/rail/air traffic, vibrations induced by equipment and machines), since they affect the structural integrity and put the users at risk. In order to prevent the severe damage and eventual collapse of structures, and consequent human, material and economic losses, the implementation of monitoring systems becomes a valuable tool for today's society. Monitoring of structures is becoming increasingly important, not only as preventive action, but also due to actual economic and sustainability concerns, to ensure a safer and more comfortable built environment.
Download or read book Optical Coherence Tomography written by Mark E. Brezinski and published by Elsevier. This book was released on 2006-08-25 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Coherence Tomography gives a broad treatment of the subject which will include 1)the optics, science, and physics needed to understand the technology 2) a description of applications with a critical look at how the technology will successfully address actual clinical need, and 3) a discussion of delivery of OCT to the patient, FDA approval and comparisons with available competing technologies. The required mathematical rigor will be present where needed but be presented in such a way that it will not prevent non-scientists and non-engineers from gaining a basic understanding of OCT and the applications as well as the issues of bringing the technology to the market. Optical Coherence Tomography is a new medical high-resolution imaging technology which offers distinct advantages over current medical imaging technologies and is attracting a large number of researchers. Provides non-scientists and non-engineers basic understanding of Optical Coherence Tomography applications and issues.
Download or read book Handbook of Optical Metrology written by Toru Yoshizawa and published by CRC Press. This book was released on 2017-07-28 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Optical Metrology: Principles and Applications begins by discussing key principles and techniques before exploring practical applications of optical metrology. Designed to provide beginners with an introduction to optical metrology without sacrificing academic rigor, this comprehensive text: Covers fundamentals of light sources, lenses, prisms, and mirrors, as well as optoelectronic sensors, optical devices, and optomechanical elements Addresses interferometry, holography, and speckle methods and applications Explains Moiré metrology and the optical heterodyne measurement method Delves into the specifics of diffraction, scattering, polarization, and near-field optics Considers applications for measuring length and size, displacement, straightness and parallelism, flatness, and three-dimensional shapes This new Second Edition is fully revised to reflect the latest developments. It also includes four new chapters—nearly 100 pages—on optical coherence tomography for industrial applications, interference microscopy for surface structure analysis, noncontact dimensional and profile metrology by video measurement, and optical metrology in manufacturing technology.
Download or read book Retinal Optical Coherence Tomography Image Analysis written by Xinjian Chen and published by Springer. This book was released on 2019-07-05 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the latest optical coherence tomography (OCT) imaging and computerized automatic image analysis techniques, and their applications in the diagnosis and treatment of retinal diseases. Discussing the basic principles and the clinical applications of OCT imaging, OCT image preprocessing, as well as the automatic detection and quantitative analysis of retinal anatomy and pathology, it includes a wealth of clinical OCT images, and state-of-the-art research that applies novel image processing, pattern recognition and machine learning methods to real clinical data. It is a valuable resource for researchers in both medical image processing and ophthalmic imaging.
Download or read book Optical Coherence Tomography of Ocular Diseases written by Joel S. Schuman and published by CRC Press. This book was released on 2024-06-01 with total page 1093 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive text and definitive guide for nearly 30 years about optical coherence tomography (OCT) imaging in ophthalmology, Optical Coherence Tomography of Ocular Diseases, Fourth Edition covers a range of subjects, from principles and operation techniques to clinical interpretation and the latest innovations in OCT. Written by the pioneers of OCT technologies and the world-renowned OCT researchers Drs. Joel S. Schuman, James G. Fujimoto, Jay S. Duker, Hiroshi Ishikawa, and Gadi Wollstein, Optical Coherence Tomography of Ocular Diseases, Fourth Edition is an essential text for imaging technology. OCT now occupies a dominant role as a diagnostic tool for retinal conditions and glaucoma. At the same time, the technology continues to show potential for emerging clinical and research applications across all the ophthalmological subspecialties. To reflect these rapid advances, this new edition of Optical Coherence Tomography of Ocular Diseases features a complete and thorough revision of the existing text as well as the addition of cutting-edge content to bring this classic resource completely up to date. New content in the Fourth Edition includes: • OCT angiography • Swept-source OCT • OCT in multimodal imaging • Clinical utility of OCT in glaucoma prediction and progression detection • OCT for neuro-ophthalmology Optical Coherence Tomography of Ocular Diseases, Fourth Edition is the one and only book needed by practitioners who use OCT for clinical eye care.
Download or read book Optical Fiber Sensing Technologies written by Tiegen Liu and published by John Wiley & Sons. This book was released on 2022-03-14 with total page 871 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Fiber Sensing Technologies/ b Explore foundational and advanced topics in optical fiber sensing technologies In Optical Fiber Sensing Technologies: Principles, Techniques, and Applications, a team of distinguished researchers delivers a comprehensive overview of all critical aspects of optical fiber sensing devices, systems, and technologies. The book moves from the basic principles of the technology to innovation methods and a broad range of applications, including Bragg grating sensing technology, intra-cavity laser gas sensing technology, optical coherence tomography, distributed vibration sensing, and acoustic sensing. The accomplished authors bridge the gap between innovative new research in the field and practical engineering solutions, offering readers an unmatched source of practical, application-ready knowledge. Ideal for anyone seeking to further the boundaries of the science of optical fiber sensing or the technological applications for which these techniques are used, Optical Fiber Sensing Technologies: Principles, Techniques, and Applications also includes: Thorough introductions to optical fiber and optical devices, as well as optical fiber Bragg grating sensing technology Practical discussions of Extrinsic-Fabry-Perot-Interferometer-based optical fiber sensing technology, acoustic sensing technology, and high-temperature sensing technology Comprehensive explorations of assemble free micro-interferometer-based optical fiber sensing technology In-depth examinations of optical fiber intra-cavity laser gas sensing technology Perfect for applied and semiconductor physicists, Optical Fiber Sensing Technologies: Principles, Techniques, and Applications is also an invaluable resource for professionals working in the semiconductor, optical, and sensor industries, as well as materials scientists and engineers for measurement and control.
Download or read book Structural Monitoring with Fiber Optic Technology written by Raymond M. Measures and published by Academic Press. This book was released on 2001 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to address the field of structurally integrated fiber optic sensors. Fiber optic sensors embedded within materials and systems are able to measure a variety of parameters (i.e. temperature, vibration, deformation, strain, etc.) that allows for real time non-destructive evaluation. Examples include the following: monitoring structural fatigue in aging aircraft or loads in bridge structures. In more advanced applications, fiber optic sensors control actuators that allow materials to adapt to their environment. This gives rise to the names, "smart," "intelligent," and/or "adaptive" materials or structures. Structural Monitoring with Fiber Optic Technology is the firs single author book on the new field of fiber optic structural sensing. As such it provides: coverage of the fundamentals of the technology, a coherent and systematic discussion on the most important aspects of the subject, a broad view of the subject, while retaining a degree of focus on those advances most significant in terms of their future potential, particularly in regard to broad implementation of the technology. The book provides an introduction to the relevant value to structural monitoring. It also highlights the advantages of fiber optic based sensors over conventional electrical measurement technology. The book richly illustrates the subject matter with 615 figures and provides many examples of fiber optic structural sensing, including a detailed overview of a number of major field site applications. Most of these large scale applications are drawn from the civil engineering community as they have been the first to strongly embrace fiber optic structural monitoring. This is especiallytrue for bridges, where innovative new designs and the use of fiber reinforced polymer composite materials to replace steel represents a major advance that is expected to revolutionize the construction industry. Examples include new bridges, which are serving as testbeds for these new materials and are instrumented with arrays of fiber optic structural sensors. In one case, this state-of-the-art monitoring system permits engineers at a distant site to track the response of the bridge to traffic loads and keep an eye on the long term performance of the new materials. Fiber optic structural sensing technology is equally applicable to other industrial sectors, such as the aerospace and marine industries. Indeed, several examples of ships being instrumented with arrays of fiber optic sensors are also included. * The author directed one of the leading laboratories in the development of this technology and its application to civil engineering * Provides a strong, concise foundation in the basics of the technology * Includes many examples of the application of the technology, including many major field site case studies * Richly illustrated with 615 figures, many redrawn to make them easier to understand; also includes over 600 references * Written in a style designed to help the reader unfamiliar with fiber optic technology appreciate what can be accomplished with this new form of structural monitoring
Download or read book Polarized Light in Biomedical Imaging and Sensing written by Jessica C. Ramella-Roman and published by Springer Nature. This book was released on 2022-11-14 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on biomedical applications of polarized light, covering instrumentation and modeling specific to the field. This will be the first book, written by leading researchers in the field, to tackle this important topic. Readers will learn the fundamentals of polarized light transport and how to develop instrumentation for clinical and preclinical studies. They will also become familiar with the latest advancement in data analysis and image processing for a variety of medical applications. The book is dedicated specifically to the biomedical community, including scientists, engineers, and physicians working on the development of instrumentation for clinical and preclinical use. Emphasizes biomedical imaging and sensing; Describes new computational approaches with examples; Provides detailed descriptions of novel instrumentation.
Download or read book Application of Structured Beams to Extend the Capabilities of Optical Imaging and Optical Trapping written by Harel Nagar and published by . This book was released on 2019 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optics and Ultrasound in Biomedicine Sensing Imaging and Therapy written by Chao Tian and published by Frontiers Media SA. This book was released on 2021-07-22 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fiber Optic Fabry Perot Sensors written by Yun-Jiang Rao and published by CRC Press. This book was released on 2017-04-27 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors deliver a complete overview of fiber-optic Fabry-Perot (FFP) sensing technology, integrating the knowledge and tools of multiple fields including optics, sensing, micromachining, instrumentation, physics, and materials science. The main chapters discuss operating principles, microstructures, fabrication methods, signal demodulation, and instrumentation. This treatment spans the full range of structures (intrinsic/extrinsic, multimode fiber vs single-mode fibers), as well as advanced micromachining technologies and major interrogating and multiplexing methods for the formation of multi-point, quasi-distributed sensing networks. Readers will also gain a summary of state-of-the-art applications in oil, gas, and electricity industries, aerospace technology, and biomedicine. Yun-Jiang Rao is Dean of the School of Communication & Information Engineering, and Director of the Key Lab of Optical Fiber Sensing & Communications at the University of Electronic Science and Technology of China. Zeng-Ling Ran and Yuan Gong are both associate professors at the Optical Fiber Technology Research Laboratory of the University of Electronic Science and Technology of China.
