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Fiber-Optic Distributed Acoustic Sensing: Principles and Applications addresses the fundamentals of fiber optic distributed acoustic sensors (DAS) and their most important application fields. It is divided into three parts, the first of which covers the theoretical aspects of the working principle of DAS technology, including the description of the main optical components used for DAS monitoring, concepts of Rayleigh scattering, and approaches for resolving the spatial information based on optical time-domain and optical frequency-domain reflectometry. The second part focuses on the different interrogation techniques existing today, including dedicated signal processing and other advanced methods for enhancing sensing performance. The third part of the book is devoted to the main industrial applications of DAS technology, such as structural health monitoring, security, geophysical studies and seismic monitoring, including also relevant aspects related to the industrial standardization of the technology. For a reader with a basic background in photonics, the book provides the basis for knowing and understanding distributed acoustic sensing technology and its applications, in a single volume. It is relevant for a broad range of scientists and researchers working in the fields of photonics, sensing, environmental and structural health monitoring, optical communications, and optical fiber systems.
List of contents
1. Introduction to distributed acoustic sensing Part One - General principles
2. Optical fibers and components in DAS
3. Rayleigh scattering
4. Basics of Standard and Phase-Sensitive Optical time-domain reflectometry (OTDR)
5. Optical frequency-domain reflectometry (OFDR) Part Two - DAS technology
6. Modeling DAS systems and performance parameters
7. Amplitude-based OTDR DVS
8. Direct detection using dual pulses and interferometers
9. Coherent detection
10. Chirped pulse DAS
11. Time-expanded DAS
12. Signal fading
13. Data interpretation and waterfall diagrams
14. Pulse coding and signal processing
15. Distributed amplification
16. Nonlinear detection
17. DAS using Optical fibers with enhanced backscattering Part Three - Applications and industrial aspects
18. Structural Health Monitoring
19. Oil and gas industries
20. Geophysics, seismic and undersea applications
21. Perimeter Security and intrusion detection
22. Traffic monitoring
23. Optical fiber cables for DAS
24. Application of artificial intelligence (AI) and machine learning to DAS systems
25. Standardization of DAS technology
About the author
Marcelo A. Soto is an Associate Professor at the Universidad Técnica Federico Santa María, Valparaíso, Chile. His research interests focus on fiber-optic sensors, distributed fiber sensing, optical signal processing, fiber-optic communications, and nonlinear fiber optics.
Sonia Martin-Lopez is a Researcher Professor at the Instituto de Óptica, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain. Her current research interests include nonlinear fiber optics and distributed optical fiber sensors.
Gabriele Bolognini is Director of Research at the National Research Council of Italy, Bologna, Italy. His research interests lie in the fields of sensing, optoelectronics, and photonics.
Yonas Seifu Muanenda is an Assistant Professor of Electronic Engineering at the Institute of Mechanical Intelligence of the Scuola Superiore Sant’Anna, Pisa, Italy. His research activities are focused on distributed acoustic sensing.
