Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adaptive Optics Theory and Its Application in Optical Wireless Communication written by Xizheng Ke and published by Springer Nature. This book was released on 2022-03-23 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces in detail the theory of adaptive optics and its correction technology for light wave distortion in wireless optical communication. It discusses the adaptive control algorithm of wavefront distortion, proportional+integral control algorithm and iterative control algorithm, and double fuzzy adaptive PID control algorithm. It also covers the SPGD algorithm of adaptive optics correction, deformable mirrors eigenmode method of wavefront aberration correction, vortex beam wavefront detecting wavefront aberration correction, liquid crystal spatial light modulator wavefront correction, different wavelengths of Gaussian beam transmission wavefront differences in the atmospheric turbulence and correction and with wavefront tilt correction adaptive optics wavefront aberration correction. Various distortion correction methods are verified by experiments and the experimental results are analyzed. This book is suitable for engineering and technical personnel engaged in wireless optical communication, college teachers, graduate students and senior undergraduate students.

Download or read book Coherent Optical Wireless Communication Principle and Application written by Xizheng Ke and published by Springer Nature. This book was released on 2023-01-01 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the key technologies of coherent optical wireless communication, covers topics such as beam coupling, signal optical polarization control and distorted wavefront correction. It discusses the principle of coherent optical communication and heterodyne detection conditions. In this book, the array coupling receiving technology and large aperture coupling technology are introduced to realize the spatial optical fiber coupling; simulated annealing algorithm, particle swarm optimization algorithm and SPO algorithm are used to control the polarization state of the signal beam; and the correction of distorted wavefront of the signal beam by adaptive optics technology and wavefront sensorless adaptive optics technology are analyzed, and the influence of beam mode on coherent detection performance is elaborated. Both theoretical deduction and experimental results are included in this book, which can help readers further understand the theoretical knowledge.

Download or read book Optoelectronic Information Processing written by Bahram Javidi and published by SPIE Press. This book was released on 1997 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topics in this volume on optoelectronic information processing include: channel transformations for improving colour pattern recognition; nonlinear cascaded correlation process for recognition of target in nonoverlapping noise; and Fourier-plane nonlinear filtering.

Download or read book Polarization Analysis and Measurement written by and published by . This book was released on 1994 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polarization Analysis and Measurement II written by Dennis H. Goldstein and published by SPIE-International Society for Optical Engineering. This book was released on 1994 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the International Conference on Lasers written by and published by . This book was released on 1995 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquid Crystal on Silicon Devices written by Andrés Márquez and published by MDPI. This book was released on 2019-11-19 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid Crystal on Silicon (LCoS) has become one of the most widespread technologies for spatial light modulation in optics and photonics applications. These reflective microdisplays are composed of a high-performance silicon complementary metal oxide semiconductor (CMOS) backplane, which controls the light-modulating properties of the liquid crystal layer. State-of-the-art LCoS microdisplays may exhibit a very small pixel pitch (below 4 μm), a very large number of pixels (resolutions larger than 4K), and high fill factors (larger than 90%). They modulate illumination sources covering the UV, visible, and far IR. LCoS are used not only as displays but also as polarization, amplitude, and phase-only spatial light modulators, where they achieve full phase modulation. Due to their excellent modulating properties and high degree of flexibility, they are found in all sorts of spatial light modulation applications, such as in LCOS-based display systems for augmented and virtual reality, true holographic displays, digital holography, diffractive optical elements, superresolution optical systems, beam-steering devices, holographic optical traps, and quantum optical computing. In order to fulfil the requirements in this extensive range of applications, specific models and characterization techniques are proposed. These devices may exhibit a number of degradation effects such as interpixel cross-talk and fringing field, and time flicker, which may also depend on the analog or digital backplane of the corresponding LCoS device. The use of appropriate characterization and compensation techniques is then necessary.

Download or read book Digital Holography Applications and Emerging Technologies written by Peter Wai Ming Tsang and published by Frontiers Media SA. This book was released on 2023-07-13 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rapid growth of computing and display technologies, digital holography (DH) has undergone significant advancement in the past two decades. Contemporary research works have enabled holography, a technology which is originally intended for displaying three-dimensional (3-D) images, to be deployed in numerous scientific, engineering, and bio-medical applications. Notably, digital holography has been incorporated into quite a number of contemporary applications, such as, but limited to holographic cryptography, optical metrology, remote sensing and inspection, and more recently, quantum computing. The success attained with DH so far does not limit its development to its current state-of-the-art, but rather research on holography keeps on expanding, with new ideas and methods keep coming up in a sustainable manner. This Research Topic aims to collect representative works from experts in the field, with the aim of providing an insight on the overall picture on digital holography, as well as reporting existing methodologies and emerging technologies that are likely to have strong impact on future research directions. Participating in the Research Topic, either as authors or readers, also facilitates establishing a platform for researchers to network, and to share their knowledge.

Download or read book Selected Papers on Liquid Crystals for Optics written by Stephen D. Jacobs and published by . This book was released on 1992 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Holography 3D Imaging and 3D Display written by Ting-Chung Poon and published by MDPI. This book was released on 2021-02-19 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern holographic techniques have been successfully applied in many important areas, such as 3-D inspection, 3-D microscopy, metrology, and profilometry, augmented reality, and industrial informatics. This Special Issue covers selected pieces of cutting-edge research works, ranging from low-level acquisition, to high-level analysis, processing, and manipulation of holographic information. The Special Issue also serves as a comprehensive review of existing state-of-the-art techniques in 3-D imaging and 3-D display, as well as broad insights into the future development of these disciplines. The Special Issue contains 25 papers in the field of holography, 3-D imaging, and 3-D display. All the papers underwent substantial peer review under the guidelines of Applied Sciences.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Information processing Systems and Architectures II written by Bahram Javidi and published by . This book was released on 1990 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Information Processing Systems and Architectures written by and published by . This book was released on 1990 with total page 684 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 1996 with total page 978 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 Optical Pattern Recognition written by Francis T. S. Yu and published by Cambridge University Press. This book was released on 1998-06-28 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of optical pattern recognition techniques and implementations, for graduate students and researchers.

Download or read book Introduction to Modern Digital Holography written by Ting-Chung Poon and published by Cambridge University Press. This book was released on 2014-01-23 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get up to speed with digital holography with this concise and straightforward introduction to modern techniques and conventions. Building up from the basic principles of optics, this book describes key techniques in digital holography, such as phase-shifting holography, low-coherence holography, diffraction tomographic holography and optical scanning holography, discussing their practical applications, and accompanied by all the theory necessary to understand the underlying principles at work. A further chapter covers advanced techniques for producing computer-generated holograms. Extensive Matlab code is integrated with the text throughout and available for download online, illustrating both theoretical results and practical considerations such as aliasing, zero padding and sampling. Accompanied by end-of-chapter problems and an online solutions manual for instructors, this is an indispensable resource for students, researchers and engineers in the fields of optical image processing and digital holography.