Application of Optical Fourier Transforms

Application of Optical Fourier Transforms

Author: Henry Stark

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 564

ISBN-13: 0323145930

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Applications of Optical Fourier Transforms is a 12-chapter text that discusses the significant achievements in Fourier optics. The opening chapters discuss the Fourier transform property of a lens, the theory and applications of complex spatial filters, and their application to signal detection, character recognition, water pollution monitoring, and other pattern recognition problems. These topics are followed by a computation of the statistical characteristics of the Fourier irradiance patterns and the hybrid systems that combine the best of optics, analog electronics, and digital computers to solve problems. The subsequent chapters examine the pulse-Doppler and chirp signals, the significance of signal-to-noise power spectrum in the information content measurement of photographic film and in image quality determinations. This text also considers the application of nonlinear systems and their components to Fourier optics. The discussions then shift to the application of Fourier methods to the study of spatial information transmission through the human visual system, as well as the application of coherent techniques to vision research. The concluding chapters deal with the well-known pattern recognition problems related to the digital signal processing community. These chapters also look into a general theoretical model of light field propagation from input to output. This book will be of value to optical scientists and vision researchers.


Optical Sensing in Power Transformers

Optical Sensing in Power Transformers

Author: Jun Jiang

Publisher: John Wiley & Sons

Published: 2020-12-14

Total Pages: 256

ISBN-13: 1119765285

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A cutting-edge, advanced level, exploration of optical sensing application in power transformers Optical Sensing in Power Transformers is filled with the critical information and knowledge on the optical techniques applied in power transformers, which are important and expensive components in the electric power system. Effective monitoring of systems has proven to decrease the transformer lifecycle cost and increase a high level of availability and reliability. It is commonly held that optical sensing techniques will play an increasingly significant role in online monitoring of power transformers. In this comprehensive text, the authors—noted experts on the topic—present a scholarly review of the various cutting-edge optical principles and methodologies adopted for online monitoring of power transformers. Grounded in the authors' extensive research, the book examines optical techniques and high-voltage equipment testing and provides the foundation for further application, prototype, and manufacturing. The book explores the principles, installation, operation, condition detection, monitoring, and fault diagnosis of power transformers. This important text: Provides a current exploration of optical sensing application in power transformers Examines the critical balance and pros and cons of cost and quality of various optical condition monitoring techniques Presents a wide selection of techniques with appropriate technical background Extends the vision of condition monitoring testing and analysis Treats condition monitoring testing and analysis tools together in a coherent framework Written for researchers, technical research and development personnel, manufacturers, and frontline engineers, Optical Sensing in Power Transformers offers an up-to-date review of the most recent developments of optical sensing application in power transformers.


Linear Systems, Fourier Transforms, and Optics

Linear Systems, Fourier Transforms, and Optics

Author: Jack D. Gaskill

Publisher: John Wiley & Sons

Published: 1978-06-16

Total Pages: 580

ISBN-13: 0471292885

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A complete and balanced account of communication theory, providing an understanding of both Fourier analysis (and the concepts associated with linear systems) and the characterization of such systems by mathematical operators. Presents applications of the theories to the diffraction of optical wave-fields and the analysis of image-forming systems. Emphasizes a strong mathematical foundation and includes an in-depth consideration of the phenomena of diffraction. Combines all theories to describe the image-forming process in terms of a linear filtering operation for both coherent and incoherent imaging. Chapters provide carefully designed sets of problems. Also includes extensive tables of properties and pairs of Fourier transforms and Hankle Transforms.


Dielectric Metamaterials and Metasurfaces in Transformation Optics and Photonics

Dielectric Metamaterials and Metasurfaces in Transformation Optics and Photonics

Author: Elena Semouchkina

Publisher: Woodhead Publishing

Published: 2021-08-06

Total Pages: 330

ISBN-13: 0128206217

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Dielectric Metamaterials and Metasurfaces in Transformation Optics and Photonics addresses the complexity of electromagnetic responses from arrays of dielectric resonators, which are often omitted from consideration when using simplified metamaterials concepts. The book's authors present a thorough consideration of dielectric resonances in different environments which is needed to design optical and photonic devices. Dielectric metamaterials and photonic crystals are compared, with their effects analyzed. Design approaches and examples of designs for invisibility cloaks based on artificial media are also included. Current challenge of incorporating artificial materials into transformation optics-based and photonics devices are also covered. Presents advanced concepts of utilizing artificial materials for optical and photonic device applications Includes design approaches of materials for transformation optics, cloaking, applications and examples of these designs Compares photonic crystals and metamaterials, their effects, properties and characteristics