Download or read book Experimental Investigations Into Four wave Mixing in Optical Fibre written by R. Billington and published by . This book was released on 2000 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Photon Generation and Detection written by Alex McMillan and published by Elsevier Inc. Chapters. This book was released on 2013-11-29 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficient generation of single photon and entangled photon states is of considerable interest both for fundamental studies of quantum mechanics and practical applications, such as quantum communications and computation. It is now well known that correlated pairs of photons suitable for such applications can be generated directly in a guided mode of an optical fiber through the nonlinear process of spontaneous four-wave mixing. Detection of one photon of the pair can be used to herald the presence of the other, in order to realise a probabilistic heralded single photon source. Alternatively, both photons can be used directly as an entangled photon pair if the source is designed such that the two photons are correlated in one or more of their degrees of freedom. This chapter provides an overview of the progress that has been made into the development of photon sources based on four-wave mixing in optical fibers. A theoretical model of four-wave mixing is described in Section 12.2, which demonstrates how the dispersion characteristics of an optical fiber influence the properties of the photon pair state that is generated. Section 12.3 focusses on heralded single photon sources operating in both the anomalous and normal dispersion regimes of optical fiber, and highlights several experimental demonstrations of this type of source. Section 12.4 discusses the concept of non-classical interference and the parameters of the generated photons that can influence the interference visibility. Section 12.5 expands upon this discussion to consider two different approaches for preparing photons in pure states that have been used to demonstrate high visibility two-photon interference. Section 12.6 describes several different experimental implementations of entangled photon pair sources. Finally, two practical applications using fiber-based photon sources are presented, with an all-fiber, quantum controlled-NOT gate discussed in Section 12.7, and the potential to use photonic fusion to build up large photonic cluster states outlined in Section 12.8.
Download or read book Optical Amplifiers written by and published by Information Gatekeepers Inc. This book was released on 1994 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rapid Adiabatic Passage in Optical Four wave Mixing written by Xiaoyue Ding and published by . This book was released on 2020 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physical analogy between nonlinear optical dynamics and quantum mechanical systems, receiving growing attention in recent years, often leads to discoveries of new phenomena and solutions to existing challenges in nonlinear optical systems, not to mention the excitement scientists feel when unifying topics that were seemingly unrelated. More specifically, the coupled nonlinear interaction between two classical or quantum waves with non-degenerate frequencies, with one or more co-existing classical pump waves, is analogous to a coupled quantum two-state system. The two systems also share a common problem: the varying dispersion in optical nonlinear interaction, a universal obstacle in broadband optical frequency conversion, is analogous to the ensemble inhomogeneity in quantum two-state systems, which is preventing full population transition in resonance. Fortunately, the latter system has a well-established solution: rapid adiabatic passage, which can achieve full-population inversion despite the ensemble impurity. Thus motivated, an exciting research concept to overcome such challenge was examined in the recent decade: rapid adiabatic passage (RAP) in optical three-wave mixing (TWM). Realized through a slow dispersion sweep in quadratic electric susceptibility $\chi^{(2)}$ nonlinear media, RAP in TWM has demonstrated spectacular capability of reaching over 90\% adiabatic inversion of photon population over octave-spanning pulses, while also achieving phase and amplitude shaping over the entire bandwidth. Such exquisite concept, if achievable in cubic electric susceptibility $\chi^{(3)}$ nonlinear media, can not only greatly expand the selection of nonlinear platforms for broadband frequency conversion, but solve challenges in many crucial applications of $\chi^{(3)}$ nonlinear process. The works of my PhD are thus motivated to probe into the theory, numerical study, experimental observation, and many future possibilities of RAP in optical four-wave mixing (FWM). The story of this thesis, same as most scientific discoveries and technological inventions, were born from a simple question: is RAP possible in optical FWM? From there, we first derive the coupled two-level system equations from nonlinear Schr\"{o}dinger equations for optical FWM. Delicate, yet fundamental findings can be discovered for the concept even from its skeleton form. Meanwhile, realistic numerical simulations were crafted as comprehensively as possible to model the feasibility of our theory. We then thoroughly examine potential platforms, ranging from low-energy step-index fibers to high-flux hollow core fiber. Results indicate that, due to its fundamental nature, RAP in optical FWM can be realized in essentially all cubic nonlinear platforms. Next, we experimentally demonstrate this concept using a highly-nonlinear photonic crystal fiber. Our proof-of-concept experiment is the first observation of RAP in optical FWM, with results closely follow our theoretical and numerical predictions. Lastly, we summarize some interesting yet unpublished investigations on potential platforms, which reveal promising applications and sometimes even new physics.
Download or read book Research in Progress written by and published by . This book was released on 1978 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Papers on Broadband Superhighway written by and published by Information Gatekeepers Inc. This book was released on 1995 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Phase Conjugation written by Robert A. Fisher and published by Academic Press. This book was released on 2012-12-02 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book appears at a time of intense activity in optical phase conjugation. We chose not to await the maturation of the field, but instead to provide this material in time to be useful in its development. We have tried very hard to elucidate and interrelate the various nonlinear phenomena which can be used for optical phase conjugation.
Download or read book Optical Fiber Telecommunications Volume VIB written by Ivan Kaminow and published by Academic Press. This book was released on 2013-05-11 with total page 1139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Fiber Telecommunications VI (A&B) is the sixth in a series that has chronicled the progress in the R&D of lightwave communications since the early 1970s. Written by active authorities from academia and industry, this edition brings a fresh look to many essential topics, including devices, subsystems, systems and networks. A central theme is the enabling of high-bandwidth communications in a cost-effective manner for the development of customer applications. These volumes are an ideal reference for R&D engineers and managers, optical systems implementers, university researchers and students, network operators, and investors. Volume A is devoted to components and subsystems, including photonic integrated circuits, multicore and few-mode fibers, photonic crystals, silicon photonics, signal processing, and optical interconnections. Volume B is devoted to systems and networks, including advanced modulation formats, coherent detection, Tb/s channels, space-division multiplexing, reconfigurable networks, broadband access, undersea cable, satellite communications, and microwave photonics. - All the latest technologies and techniques for developing future components and systems - Edited by two winners of the highly prestigious OSA/IEEE John Tyndal award and a President of IEEE's Lasers & Electro-Optics Society (7,000 members) - Written by leading experts in the field, it is the most authoritative and comprehensive reference on optical engineering on the market
Download or read book Photonic Networks written by Giancarlo Prati and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: The day when fiber will deliver new, yet now only foreseeable, broadband ser vices to the end user is getting nearer and nearer as we make our way towards the prophetic year 2000. Step by step, as we move from first generation lasers and fibers to the by now common erbium-doped fiber amplifiers, looking forward to such things as wavelength multiplexing and solitons, photonic switching and optical storage, the community of researchers in optical communications has stepped into the era of photonic networks. It is not just a question of terminology. Optical communication means tech nology to the same extent that photonic network means services. If it is true that information is just as marketable a product as oil or coke, the providing of an extensive global information infrastructure may end up having an even greater impact than the setting up of a world-wide railroad network did at the beginning of the industrial era. Just like wagons, bandwidth will be responsible for carrying and delivering goods to customers. The challenge for all of us in this field is for it to function in every section of the overall network, transport, access and customer area, in the best possible way: the fastest, most economical and most flexible. New services provided by a new network that exploits the potential and peculiarities of photonics surely requires a rethinking of solutions, new ideas, new architec tures, new design, especially where electronics is still dominant, as in transport and access networks.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-03 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Optics in Telecommunications written by Thomas Schneider and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive and didactic overview explores the nonlinear effects from a physical point of view and discusses the implications for signal capacity. Enriched with practical considerations and experimental results, the book offers special chapters dealing with applications of nonlinear effects for signal processing, ultrafast-optical switching, wavelength conversion, nonlinear amplification, and optical phase-conjugation. Equipped with chapter-end summaries and problems, this valuable reference can also serve as a graduate-level textbook.
Download or read book Optical Fibers Research Advances written by Jürgen C. Schlesinger and published by Nova Publishers. This book was released on 2007 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optical fibre is a glass or plastic fibre designed to guide light along its length by confining as much light as possible in a propagating form. In fibre with large core diameter, the confinement is based on total internal reflection. In smaller diameter core fibres, (widely used for most communication links longer than 200 meters) the confinement relies on establishing a waveguide. Fibre optics is the overlap of applied science and engineering concerned with such optical fibres. Optical fibres are widely used in fibre-optic communication, which permits transmission over longer distances and at higher data rates than other forms of wired and wireless communications. They are also used to form sensors, and in a variety of other applications. The term optical fibre covers a range of different designs including graded-index optical fibres, step-index optical fibres, birefringent polarisation-maintaining fibres and more recently photonic crystal fibres, with the design and the wavelength of the light propagating in the fibre dictating whether or not it will be multi-mode optical fibre or single-mode optical fibre. Because of the mechanical properties of the more common glass optical fibres, special methods of splicing fibres and of connecting them to other equipment are needed. Manufacture of optical fibres is based on partially melting a chemically doped pre-form and pulling the flowing material on a draw tower. Fibres are built into different kinds of cables depending on how they will be used. This new book presents the latest research in the field.
Download or read book Optics Letters written by and published by . This book was released on 2008 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Processes in Optical Fibers and Microresonators written by Karen Elizabeth Webb and published by . This book was released on 2017 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Thesis presents a series of experimental and numerical investigations of nonlinear frequency conversion processes in both optical fibers and microresonators. In the context of optical fibers, we consider the cascaded four-wave mixing dynamics that underlie the interaction between solitons and linear waves, while in microresonators we look in detail at the formation of optical frequency combs and their properties. We first consider the interactions between solitons and weak linear waves co-propagating in an optical fiber. Through comprehensive experiments and simulations, we demonstrate the equivalence between soliton-linear wave interactions and cascaded Bragg scattering. The observed dynamics are also interpreted in terms of fiber-optic analogues of event horizons. We also investigate cascaded four-wave mixing processes in optical fibers in the absence of weak input linear waves. Specifically, we examine the excitation of a higher-order sideband that is phasematched through the cascade, and study how the efficiency of this excitation depends on the frequency detuning between the two continuous-wave pumps that initiate the four-wave mixing process. We find that the pump separation has a significant effect on the conversion efficiency to the phasematched sideband, which we explain by treating the individual cycles of the pump beat note as independent higher-order solitons. In the study of microresonators, we quantify the coherence properties of different microres-onator frequency combs. By passing the resonator output through a delayed interferometer, the modulus of the complex degree of first order coherence can be extracted from the spectral fringes. In addition to allowing for the quantitative assessment of comb coherence across the full bandwidth, we demonstrate how this method can be used to experimentally determine the comb operating regime. Finally, we demonstrate for the first time the formation of temporal cavity solitons in silica microspheres, and experimentally verify the high coherence of the resulting frequency combs. Further experiments and numerical simulations are carried out to investigate the influence of perturbations on the generation of microresonator cavity solitons.
Download or read book Optical Fiber Telecommunications VIB written by Xi Chen and published by Elsevier Inc. Chapters. This book was released on 2013-05-11 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter, we present an overview of multicarrier transmission and its application to optical communication. Specifically, we first introduce the historical perspectives in the development of optical multicarrier technologies. We then present different variants of optical multicarrier transmission. We also highlight the problem of fiber nonlinearity in optical multicarrier transmission systems and present an analysis of fiber capacity under nonlinear impairments. Furthermore, we discuss applications of multicarrier techniques to long-haul systems, access networks, and free-space optical communication systems. Finally, we summarize with some possible research directions in implementing multicarrier technologies in optical transmission.
Download or read book Nonlinear Optics written by Karsten Rottwitt and published by CRC Press. This book was released on 2014-12-11 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the fundamental aspects of nonlinear optics from basic principles to applications. Starting from the polarization induced by an electric field in a material, it relates the induced polarization to the propagating fields. It describes the properties of the induced polarization through a material response expressed both in the time and frequency domains leading to the nonlinear wave equation. The second part of the book focuses on applications of nonlinear interaction between light and matter, and considers nonlinearities in crystals and optical fibers.
