Bøger af Avi Zadok

This book, the first dedicated to the topic, provides a comprehensive treatment of forward stimulated Brillouin scattering (SBS) in standard optical fibers. SBS interactions between guided light and sound waves have drawn much attention for over fifty years, and optical fibers provide an excellent playground for the study of Brillouin scattering as they support guided modes of both wave types and provide long interaction lengths. This book is dedicated to forward SBS processes that are driven by co-propagating optical fields. The physics of forward SBS is explained in detail, starting from the fundamentals of interactions between guided optical and acoustic waves, with emphasis given to the acoustic modes that are stimulated in the processes. The realization of forward SBS in standard single-mode, polarization-maintaining and multi-core fibers is then discussed in depth. Innovative potential applications in sensors, monitoring of coating layers, lasers, and radio-frequency oscillators are presented. This book introduces the subject to graduate students in optics and applied physics, and it will be of interest to scientists working in fiber-optics, nonlinear optics and opto-mechanics.Provides the first treatment of forward stimulated Brillouin scattering (SBS) in book form;Reflects the dramatic recent increase in interest in forward SBS processes , driven in part by the promise of new fiber sensing concepts;Delivers a solid and comprehensive grounding in the physics of forward SBS along with detailed experimental set-ups, measurement protocols, and applications.

Optical filters are critical components in optical communication, sensors and signal processing. The performance and applicability of optical filters is enhanced considerably through dynamic, post fabrication reconfiguration of their response. This work examines several aspects regarding the synthesis, characterization, implementation and application of dynamic, fiber-optic filters. One category of devices under study is that of linear optical filters, with particular emphasis on multiple-stage, moving average lattice filters. A second category is that of nonlinear filters, in which a stimulated Brillouin scattering pump wave imposes a highly reconfigurable transfer function on a counter-propagating probe wave. Specific examples include broadband, variable-delay ¿slow light¿ elements, highly selective spectral windows, high resolution spectro-polarimeters, polarization mode dispersion mitigators and many more. The methods and results included in this book extend the versatility of optical filters, and should be of much interest to professionals in the areas of optical communication and microwave photonics.