Download or read book Stimulated Brillouin Scattering Phase Conjugation in Fiber Optic Waveguides written by Steven M. Massey and published by . This book was released on 2008 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stimulated Brillouin Scattering written by M J Damzen and published by CRC Press. This book was released on 2003-09-01 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stimulated Brillouin scattering (SBS) is the most important example of a stimulated scattering process-light scattering that occurs when the intensity of the light field itself affects the propagating medium. A phenomenon that has been known of for some 35 years in solid state laser research, it has recently become relevant in the optical fiber ind

Download or read book Numerical Study of Phase Conjugation in Stimulated Brillouin Scattering from an Optical Waveguide written by R. H. Lehmberg and published by . This book was released on 1982 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase conjugation in stimulated Brillouin scattering (SBS) from an optical waveguide is studied numerically, using a Cartesian two dimensional propagation code (BOUNCE) that includes pump depletion. The simulations show that light scattered back through a phase aberrator produces a far field profile closely matching that of the incident beam; however, the near field intensity exhibits large and rapid spatial inhomogeneities across the entire aberrator, even for conjugation fidelities H as high as 98%.

Download or read book Optical Phase Conjugation Via Stimulated Brillouin Scattering in Multimode Optical Fiber written by and published by . This book was released on 1990 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this thesis was to obtain phase conjugation of laser beam using the process of stimulated Brillouin scattering (SBS) in optical fiber and to characterize the parameters involved. SBS in fiber is used for several reasons: high conversion efficiency, nanosecond response time, only the signal beam is required and fiber has a lower SBS threshold and superior power handling capabilities compared to either crystals or liquids. SBS theory is briefly described along with some results from previous work. Experimental results show the multimode fiber losses at coupled powers below about 2 W to be 16.4 + or - 0.3 dB/km at 514.5 nm. The transmitted and backscattered power exhibited behavior similar to that previously reported for single-mode fiber. The SBS threshold power increased for shorter fibers and when index matching liquid was used. The Stokes shift was 32.78 + or - 0.02 GHz and the measured gain coefficient was 10.2 times 10( -9) cm/W with an error of 10%. Most importantly, nonlinear optical phase conjugation was demonstrated for the first time. The polarization state of the pump beam was not reproduced, however. In addition, the SBS power exhibited bursts of strong fluctuations.

Download or read book Pourqoi la France n est pas pr tre written by and published by . This book was released on 1885 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Phase Conjugation by Stimulated Brillouin Scattering written by Walter Andreas Schroeder and published by . This book was released on 1987 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Limitations to the Quality of Optical Phase Conjugation by Stimulated Brillouin Scattering written by Thomas Richard Moore and published by . This book was released on 1993 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phase Conjugate Laser Optics written by Arnaud Brignon and published by John Wiley & Sons. This book was released on 2003-12 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete review of the state of the art of phase conjugate lasers, including laser demonstrations, performances, technology and selection of the most important class of nonlinear media. * Emphasizes the basic aspects of phase conjugation. * Chapter authors have all made major contributions to their subjects.

Download or read book Limitations to the Quality of Optical Phase Conjugation by Stimulated Brillouin Scattering written by Thomas Richard Moore and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forward Brillouin Scattering in Standard Optical Fibers written by Avi Zadok and published by Springer Nature. This book was released on 2022-10-19 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Fidelity of Optical Phase Conjugation Using Stimulated Brillouin Scattering written by Vladimyros Devrelis and published by . This book was released on 1997 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Limiting Factors and Methods of Optical Phase Conjugation by Stimulated Brillouin Scattering written by Igorʹ Yu Anikeev and published by . This book was released on 2001 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of phase conjugation by stimulated Brillouin scattering is presented with emphasis on the limiting factors, such as aperture and polarization losses, spatial coherence and saturation of the incident wave on the quality of phase conjugation, as well as the application of stimulated Brillouin scattering to loop phase-cojugated mirror and intracavity-SBS-cell-phase-conjugated oscillator.

Download or read book Theoretical Investigation of Stimulated Brillouin Scattering in Optical Fibers and Their Applications written by Daisy Williams and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1920, Leon Brillouin discovered a new kind of light scattering --Brillouin scattering --which occurs as a result of the interaction of light with a transparent material's temporal periodic variations in density and refractive index. Many advances have since been made in the study of Brillouin scattering, in particular in the field of fiber optics. An in-depth investigation of Brillouin scattering in optical fibers has been carried out in this thesis, and the theory of stimulated Brillouin scattering (SBS) and combined Brillouin gain and loss has been extended. Additionally, several important applications of SBS have been found and applied to current technologies. Several mathematical models of the pump-probe interaction undergoing SBS in the steady-state regime have emerged in recent years. Attempts have been made to find analytical solutions of this system of equations, however, previously obtained solutions are numerical with analytical portions and, therefore, qualify as hybrid solutions. Though the analytical portions provide useful information about intensity distributions along the fiber, they fall short of describing the spectral characteristics of the Brillouin amplification and the lack of analytical expressions for Brillouin spectra substantially limits the utility of the hybrid solutions for applications in spectral measurement techniques. In this thesis, a highly accurate, fully analytic solution for the pump wave and the Stokes wave in Brillouin amplification in optical fibers is given. It is experimentally confirmed that the reported analytic solution can account for spectral distortion and pump depletion in the parameter space that is relevant to Brillouin fiber sensor applications. The analytic solution provides a valid characterization of Brillouin amplification in both the low and high nonlinearity regime, for short fiber lengths. Additionally, a 3D parametric model of Brillouin amplification is proposed, which reflects the effects of input pump and Stokes powers on the level of pump wave depletion in the fiber, and acts as a classification tool to describe the level of similarity between various Brillouin amplification processes in optical fibers. At present, there exists a multitude of electro-optic modulators (EOM), which are used to modulate the amplitude, frequency, phase and polarization of a beam of light. Among these modulators, phase modulation provides the highest quality of transmitted signal. As such, an improved method of phase-modulation, based on the principles of stimulated Brillouin scattering, as well as an optical phase-modulator and optical phase network employing the same, has been developed. Due to its robustness, low threshold power, narrow spectrum and simplicity of operation, stimulated Brillouin scattering (SBS) has become a favourable underlying mechanism in fiber-based devices used for both sensing and telecommunication applications. Since birefringence is a detrimental effect for both, it is important to devise a comprehensive characterization of the SBS process in the presence of birefringence in an optical fiber. In this thesis, the most general model of elliptical birefringence in an optical fiber has been developed for a steady-state and transient stimulated Brillouin scattering (SBS) interaction, as well as the combined Brillouin gain and loss regime. The impact of the elliptical birefringence is to induce a Brillouin frequency shift and distort the Brillouin spectrum --which varies with different light polarizations and pulse widths. The model investigates the effects of birefringence and the corresponding evolution of spectral distortion effects along the fiber, and proposes regimes that are more favourable for sensing applications related to SBS --providing a valuable prediction tool for distributed sensing applications. In recent years, photonic computing has received considerable attention due to its numerous applications, such as high-speed optical signal processing, which would yield much faster computing times and higher bandwidths. For this reason, optical logic has been the focus of many research efforts and several schemes to improve conventional logic gates have been proposed. In view of this, a combined Brillouin gain and loss process has been proposed in a polarization maintaining optical fiber to realize all-Optical NAND/NOT/AND/OR logic gates in the frequency domain. A model describing the interaction of a Stokes, anti-Stokes and a pump wave, and two acoustic waves inside a fiber, ranging in length from 350m-2300m, was used to theoretically model the gates. Through the optimization of the pump depletion and gain saturation in the combined gain and loss process, switching contrasts of 20-83% have been simulated for different configurations.

Download or read book Experimental Study of Stimulated Brillouin Scattering in Open Cells and Multimode Optical Fibres written by Allan Chi-Lun Wong and published by . This book was released on 2005 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of the stimulated Brillouin scattering (SBS) was carried out by performing optical phase conjugation in open cells and multimode optical fibres using a Q-switched, pulsed Nd:YAG laser. Experiments were done with test tubes that contained two SBS liquids - Fluorinert and Acetone, and multimode optical fibres. The three fundamental parameters of SBS: the threshhold energy, reflectivity and phase conjugate fidelity were characterised and analysed. In addition, the temporal behaviour of Stokes beam, phase correction, optical beakdown, and pulse compression were investigated. --p. vii.

Download or read book Stimulated Brillouin Scattering Phase Conjugation written by Kyunam Choi and published by . This book was released on 1988 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Phase Conjunction Via Stimulated Brillouin Scattering in Multimode Optical Fiber written by Patrick T. Ryan (1LT, USAF.) and published by . This book was released on 1990 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spectrum Engineering of Stimulated Brillouin Scattering in Distributed Fiber Sensing and Optical Signal Processing written by Cheng Feng and published by Cuvillier Verlag. This book was released on 2020-12-03 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stimulated Brillouin scattering is one of the dominant nonlinear effects in single mode optical fibers due to its low threshold. Its unique Lorentzian gain spectrum characteristic with the narrow linewidth of 20-30 MHz has enabled numerous of applications, such as optical signal processing, delay and light storage, optical spectrum analysis and distributed sensing. However, a fixed spectral characteristic cannot meet the requirements of a variety of applications. Therefore, an engineered, reconfigurable or arbitrary manipulated gain spectrum is of great importance. This book will start from the basics of stimulated Brillouin scattering and its principle for distributed fiber sensing and optical signal processing. The basic method for Brillouin gain spectrum engineering by the pump modulation and the superposition with Brillouin loss(es) will be introduced. As the main contain of this book, the application of Brillouin gain spectrum engineering in the field of static and dynamic distributed fiber sensing, and optical signal processing together with the advantages and benefits will be demonstrated in detail. Under the assistance of gain spectrum engineering, solutions have been proposed for drawbacks such as measurand resolution in static distributed fiber sensing, tradeoff between dynamic range and sensitivity in dynamic distributed fiber sensing, and inevitable Brillouin noise in optical and microwave photonic filters based on stimulated Brillouin scattering.