Coherent Optical Data Processing Technology
Author : Gary D. Cochran
Publisher :
Page : 13 pages
File Size : 22,46 MB
Release : 1970
Category : Optical data processing
ISBN :
Author : Gary D. Cochran
Publisher :
Page : 13 pages
File Size : 22,46 MB
Release : 1970
Category : Optical data processing
ISBN :
Author : Kendall Preston
Publisher : McGraw-Hill Companies
Page : 346 pages
File Size : 39,22 MB
Release : 1972
Category : Computers
ISBN :
Author : Denis Hankins
Publisher :
Page : 86 pages
File Size : 41,4 MB
Release : 1970
Category : Optical data processing
ISBN :
An optical data processing study was performed to determine the value of the use of present day coherent optical processing techniques on selected AFFDL data processing problems. Optical, digital and analog implementation of Power Spectral Density, Cross Spectrum, Auto and Cross Correlation, Transfer Function, and Filtering (Convolution) were considered for a wide variety of input data: from low frequency Clear Air Turbulence (cycles/hour) to high frequency acoustic data (10 Hz). A sample problem supplied by AFFDL was analyzed by in-house optical, digital and analog computers to demonstrate the degree of computational equivalence. Next a study of twelve processing areas at Flight Dynamics Laboratory was performed to uncover promising areas for Optical Processing. Although most requirements could be met all twelve users reported a dynamic range requirement 10 dB or more than that which is available in established optical processing technology. Areas in which optical processing shows advantages over digital processing, viz. , two-dimensional Fourier transforms and high BT products were not desired nor within the current mission of the laboratory data. Cost data for the three processing methods were generated. For large volume processing, the digital and optical implementions were found to be roughly equal and less than the cost of analog equipment for spectrum analysis. The digital method is found to be system cost effective in that once a special purpose Fast Fourier Transform (FTT) computer is purchased to generate power spectrum, and other functions can be calculated with negligible increase in cost.
Author : David Paul Casasent
Publisher : Springer
Page : 316 pages
File Size : 44,30 MB
Release : 1978
Category : Computers
ISBN :
Author : David Casasent
Publisher :
Page : 10 pages
File Size : 46,79 MB
Release : 1977
Category :
ISBN :
The operations possible in a coherent optical computer are briefly reviewed and several applications of this novel class of processor are included. Emphasis is given to signal processing operations and new space variant optical processor architectures. (Author).
Author : Xiang Zhou
Publisher : John Wiley & Sons
Page : 649 pages
File Size : 12,93 MB
Release : 2016-04-29
Category : Science
ISBN : 1118714962
Enabling Technologies for High Spectral-efficiency Coherent Optical Communication Networks Presents the technological advancements that enable high spectral-efficiency and high-capacity fiber-optic communication systems and networks This book examines key technology advances in high spectral-efficiency fiber-optic communication systems and networks, enabled by the use of coherent detection and digital signal processing (DSP). The first of this book’s 16 chapters is a detailed introduction. Chapter 2 reviews the modulation formats, while Chapter 3 focuses on detection and error correction technologies for coherent optical communication systems. Chapters 4 and 5 are devoted to Nyquist-WDM and orthogonal frequency-division multiplexing (OFDM). In chapter 6, polarization and nonlinear impairments in coherent optical communication systems are discussed. The fiber nonlinear effects in a non-dispersion-managed system are covered in chapter 7. Chapter 8 describes linear impairment equalization and Chapter 9 discusses various nonlinear mitigation techniques. Signal synchronization is covered in Chapters 10 and 11. Chapter 12 describes the main constraints put on the DSP algorithms by the hardware structure. Chapter 13 addresses the fundamental concepts and recent progress of photonic integration. Optical performance monitoring and elastic optical network technology are the subjects of Chapters 14 and 15. Finally, Chapter 16 discusses spatial-division multiplexing and MIMO processing technology, a potential solution to solve the capacity limit of single-mode fibers. Contains basic theories and up-to-date technology advancements in each chapter Describes how capacity-approaching coding schemes based on low-density parity check (LDPC) and spatially coupled LDPC codes can be constructed by combining iterative demodulation and decoding Demonstrates that fiber nonlinearities can be accurately described by some analytical models, such as GN-EGN model Presents impairment equalization and mitigation techniques Enabling Technologies for High Spectral-efficiency Coherent Optical Communication Networks is a reference for researchers, engineers, and graduate students.
Author : Darli Augusto de Arruda Mello
Publisher : Springer Nature
Page : 238 pages
File Size : 39,43 MB
Release : 2021-03-08
Category : Technology & Engineering
ISBN : 3030665410
This textbook details the architecture of a digital coherent optical system and describes its main digital signal processing (DSP) algorithms. The authors first show how the combination of advanced modulation techniques, DSP and coherent detection has led to significant gains in capacity and ease of operation. The authors follow the path of the information from its generation in the transmitter, to propagation through the fiber and processing by the DSP algorithms in the receiver. The work summarizes academic results and presents them in a didactic way to students and practitioners working on the area of optical communications. A full suite of classroom materials is included for easy integration into a curriculum, containing theoretic and simulation problems, and off-the-shelf Matlab/Octave functions.
Author : T. Okoshi
Publisher : Springer Science & Business Media
Page : 302 pages
File Size : 13,6 MB
Release : 1988-07-31
Category : Technology & Engineering
ISBN : 9789027726773
Author : Le Nguyen Binh
Publisher : CRC Press
Page : 510 pages
File Size : 42,26 MB
Release : 2017-07-12
Category : Technology & Engineering
ISBN : 1351832433
With coherent mixing in the optical domain and processing in the digital domain, advanced receiving techniques employing ultra-high speed sampling rates have progressed tremendously over the last few years. These advances have brought coherent reception systems for lightwave-carried information to the next stage, resulting in ultra-high capacity global internetworking. Digital Processing: Optical Transmission and Coherent Receiving Techniques describes modern coherent receiving techniques for optical transmission and aspects of modern digital optical communications in the most basic lines. The book includes simplified descriptions of modulation techniques for such digital transmission systems carried by light waves. It discusses the basic aspects of modern digital optical communications in the most basic lines. In addition, the book covers digital processing techniques and basic algorithms to compensate for impairments and carrier recovery, as well as noise models, analysis, and transmission system performance.
Author : Zhensheng Jia
Publisher : CRC Press
Page : 128 pages
File Size : 46,90 MB
Release : 2019-10-28
Category : Technology & Engineering
ISBN : 1000736962
This book will highlight the motivation for coherent optics in access and introduce digital coherent optical system in detail, including advanced modulation formats, architecture of modulation and detection, and DSP flow for both transmitter and receiver. This book will also demonstrate potential approaches to re-design and re-engineer the digital coherent concept from long-haul and metro solutions to the access network, leveraging reduction in complexity and cost as well as the benefits of capacity increases and operational improvements. This book will illustrate the details on optimization of the digital, optical, and electrical complexity and standardization and interoperability.