Download or read book Tunable Frequency Conversion Using Four wave Mixing in Optical Fibres written by Ross W. McKerracher and published by . This book was released on 2006 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Step tunable All optical Wavelength Conversion Using Cavity enhanced Four Wave Mixing written by Janice A. Hudgings and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frequency Domain Quantum Processing Via Four wave Mixing written by Chaitali Joshi and published by . This book was released on 2020 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical photons are excellent flying qubits for future long-distance quantum networks due to negligible decoherence at room temperature. To date, quantum photonic technologies have focused on processing the spatial, temporal and polarization degrees of freedom of light. However, frequency encoding of information has had a profound impact on classical telecommunications, creating mature low-loss fiber-based and integrated photonics hardware that can be exploited to address challenges of scalability in photonic quantum networks. In this dissertation, we use tools from nonlinear optics to realize coherent frequency domain processing of single photons. We use quantum frequency conversion via Bragg scattering four-wave mixing (BS-FWM) to manipulate the spectral and temporal properties of single photons. We use an implementation of BS-FWM that achieves close to unity efficiency and ultra-low noise to develop a powerful toolbox that combines advantages of frequency encoding, fiber and integrated photonic technologies and nonlinear optics for scaling future quantum networks. The first application discussed in this thesis is a frequency-multiplexed single-photon source. Deterministic, high-quality sources of single photons are a crucial requirement for scalable photonic quantum information processing (QIP). The most widely used single-photon sources are based on nonlinear parametric processes that are inherently probabilistic. Active feed-forward switching and multiplexing of such probabilistically generated photons can be used to generate photons on demand if a sufficiently large number of modes are multiplexed. Schemes based on spatial and temporal multiplexing however suffer from prohibitive switching losses that significantly limit their performance. We implemented an alternative scheme based on frequency multiplexing that breaks this limitation. We used BS-FWM as a 'frequency switch' to multiplex frequency modes of a broadband probabilistic single-photon source. We demonstrated a 220\% enhancement in single-photon generation rate while maintaining low noise properties ($g^{(2)}$ = 0.07) essential for quantum applications. This approach has a unique potential to create a deterministic source of single photons on a chip-based integrated photonics platform. The next application we discuss is Hong-Ou-Mandel (HOM) interference with photons of distinct colors. In this work, we combine frequency-entangled photons generated on-chip together with Bragg-scattering four-wave mixing (BS-FWM) in fiber to demonstrate frequency-domain HOM interference with 95\% visibility. BS-FWM coherently couples distinct frequency modes while preserving all quantum properties of the input fields and can therefore be used to create an active, tunable 'frequency beam splitter (FBS)'. We observe a rich two-photon interference pattern including quantum beating, previously observed with cold-atomic systems. Remarkably, we observe high fidelity interference even though the photons propagate for much longer than their mutual coherence time, confirming that this is truly a two-photon interference phenomenon. In addition to fundamental novelty, this work establishes four-wave mixing as a tool for selective, high-fidelity two-photon operations in the frequency domain, which combined with integrated single photon sources provides a building block for frequency multiplexed photonic quantum networks. This demonstration will also enable applications such as frequency domain boson sampling, which we discuss in detail in this dissertation. Finally, we demonstrate a single-photon level time lens with picosecond resolution using BS-FWM. We discuss the conditions under which broadband phase-matching can be achieved with BS-FWM. A time lens draws on space-time duality and imparts a quadratic phase shift on the input signal. With this setup, we achieve a temporal magnification factor of 158 and resolve single-photon level pulses separated by 2.2 ps. Finally, we show that the temporal phase imparted by the BS-FWM pumps can be generalized to realize significantly more complex, unitary operations on broadband temporal models. In particular, we use numerical optimization via steepest gradient descent to demonstrate temporal mode sorting of field orthogonal but intensity overlapping Hermite-Gaussian temporal modes. These results show that BS-FWM is a powerful tool for temporal mode quantum processing at the single-photon level.
Download or read book First International Conference on Optical Communications and Networks ICOCN 2002 written by Cambyse Guy Omidyar and published by World Scientific. This book was released on 2002 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical communications networks are becoming increasingly important as there is demand for high capacity links. Dense wavelength division multiplexing (DWDM) is widely deployed at the core networks to accommodate high capacity transport systems. Optical components such as optical amplifiers, tunable filters, transceivers, termination devices and add-drop multiplexers are becoming more reliable and affordable. Access and metropolitan area networks are increasingly built with optical technologies to overcome the electronic bottleneck at network edges. New components and subsystems for very high speed optical networks offer new design options.The proceedings of the First International Conference on Optical Communications and Networks present high quality recent research results in the areas of optical communications, network components, architectures, protocols, planning, design, management and operation.
Download or read book Multiwavelength Optical Networks written by Thomas E. Stern and published by Cambridge University Press. This book was released on 2009 with total page 1005 pages. Available in PDF, EPUB and Kindle. Book excerpt: Second edition of the acclaimed Multiwavelength Optical Networks, describing architectures, enabling technologies, and analytical tools.
Download or read book Fiber Optical Parametric Amplifiers Oscillators and Related Devices written by Michel E. Marhic and published by Cambridge University Press. This book was released on 2008 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2007 book comprehensively covers the theory, techniques and practice of all types of fiber OPAs and related devices.
Download or read book Four Wave Mixing in Semiconductor Optical Amplifiers and Erbium Doped Fiber Lasers written by Chiming Wu and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Four Wave Mixing (FWM) in a semiconductor optical amplifier (SOA) is a third order nonlinear effect, which has various potential applications in high-speed optical communication systems. Continuous-wave (CW) FWM in a 2-section SOA has been experimentally studied. The carrier density modulation and nonlinear gain effects in the semiconductor optical amplifier contribute to the generation of the FWM. A theoretical model of CW FWM and frequency response of FWM using small signal analysis has been developed. Bandwidth of the FWM has been obtained for the first time. Pulsed FWM in the 2-section SOA has also been studied and analyzed. Optical time-division demultiplexing and wavelength conversion using the FWM in the SOA has been demonstrated for optical communication. A tunable Erbium doped fiber laser, which is preferred in the FWM experiments and is potentially an important source for high speed optical communication, has also been investigated. The tunability of the fiber laser is about 40 nm for both CW and mode-locking cases. Actively harmonic mode-locking which happens when the modulation frequency fm = n fc (fc is the fundamental cavity frequency) and rational harmonic mode-locking which happens when fm = (n + 1/p)fc (n, p are both integers) have been studied and analyzed. 22nd order of rational harmonic mode-locking was observed when f m 1 GHz, which is the highest order of rational harmonic mode-locking ever reported. 40 GHz pulse train with pulse width âˆ1⁄47 ps was achieved using rational harmonic mode-locking technique when f m 10 GHz. Stabilization of the mode-locked Er-doped fiber laser with a semiconductor optical amplifier in the cavity has also been studied. The semiconductor optical amplifier contributes in removing the supermode noise and stabilizing the optical pulses.
Download or read book Engineering Four wave mixing Frequency Conversion in Photonic Crystal Fibre for Quantum Networks written by Charlotte Parry and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coherent Lightwave Communications Technology written by S. Shimada and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a wide range of technical issues relating to lightwave technologies using high coherence lightwaves. Electromagnetic wave communication started when the first wireless system was invented by Marconi in 1895. However, we had to wait about one hundred years to realize a similar technology in the lightwave frequency region. The invention of lasers in 1960 and two technology innovations in 1970 -low loss silica fiber and semiconductor lasers operating at room temperature - promoted the development of fiber-optic transmission systems. The deployment of high-speed long-haul fiber-optic transmission systems has led to the formation of domestic and international trunk networks. The installed fiber cables in local loop plants provide multimedia communication services including broadband video. However, present lightwave communication systems do not fully utilize the fruitful potential oflightwaves, namely the capacity of extremely high frequency electromagnetic information carrier waves. The frequency oflightwaves used for fiber-optic transmission is about 200 THz 14 (2 x 10 Hz), and the frequency bandwidth of the fiber low loss region is about 13 20 THz (2 x 10 Hz). Recent developments of narrow spectrum width semiconduc tor laser and planar optical waveguide devices offer us the possibilities for a new generation of lightwave-based communication systems. This book focuses on system aspects ofthe new generation lightwave communi cation technologies such as optical frequency division multiplexing and coherent detection. Chapter 1 overviews lightwave communication system technology.
Download or read book Applications of Semiconductor Optical Amplifiers written by Kyriakos E. Zoiros and published by MDPI. This book was released on 2018-10-11 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Applications of Semiconductor Optical Amplifiers" that was published in Applied Sciences
Download or read book Progress in Optical Fibers Research written by Zhijian Guo and published by Nova Publishers. This book was released on 2007 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new and important research on optical fibres. 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 fibres 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 fiber 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 preform and pulling the flowing material on a draw tower. Fibers are built into different kinds of cables depending on how they will be used.
Download or read book Microstructured Fibers with Liquid Crystals Tuning of Optical Transmission and Dispersion written by Markus Wahle and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid crystal filled optical fibers offer multiple ways to control optical signals by actively modulating the optical properties of the liquid crystal. This thesis describes the coupling of light guided inside a solid glass core fiber with liquid crystal filled inclusions. By applying an external electric field, the interaction of the guided light with the liquid crystal can be controlled. The first part of this thesis is concerned with microstructured optical fibers, which consist of a solid glass core and a single liquid crystal inclusion. The investigation of these microstructured fibers is focused on the characterization of electrically induced polarization effects of light in the visible and infrared spectrum. The experimental results are compared to the predictions of the coupled mode theory. In the second part, photonic crystal fibers are investigated. These fibers possess a central glass core, which is surrounded by a periodic array of liquid crystal inclusions. The main focus lies on the propagation characteristics of optical pulses such as group velocity and dispersion. These properties can be influenced by an external electric field. Finally, the possibility of four wave mixing in these fibers is discussed, which would allow for an electrically tunable frequency conversion. ; eng
Download or read book Optical Solitons written by Kuppuswamy Porsezian and published by Springer. This book was released on 2008-01-11 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Solitons represent one of the most exciting and fascinating concepts in modern communications, arousing special interest due to their potential applications in optical fibre communication. This volume focuses on the explicit integration of analytical and experimental methods in nonlinear fibre optics and integrated optics. It covers all important recent technical issues in optical-soliton communication. For example, individual chapters are devoted to topics such as dispersion management and fibre Bragg grating. All authors are leading authorities in their fields.
Download or read book Stimulated Raman Scattering Microscopy written by Ji-Xin Cheng and published by Elsevier. This book was released on 2021-12-04 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stimulated Raman Scattering Microscopy: Techniques and Applications describes innovations in instrumentation, data science, chemical probe development, and various applications enabled by a state-of-the-art stimulated Raman scattering (SRS) microscope. Beginning by introducing the history of SRS, this book is composed of seven parts in depth including instrumentation strategies that have pushed the physical limits of SRS microscopy, vibrational probes (which increased the SRS imaging functionality), data science methods, and recent efforts in miniaturization. This rapidly growing field needs a comprehensive resource that brings together the current knowledge on the topic, and this book does just that. Researchers who need to know the requirements for all aspects of the instrumentation as well as the requirements of different imaging applications (such as different types of biological tissue) will benefit enormously from the examples of successful demonstrations of SRS imaging in the book. Led by Editor-in-Chief Ji-Xin Cheng, a pioneer in coherent Raman scattering microscopy, the editorial team has brought together various experts on each aspect of SRS imaging from around the world to provide an authoritative guide to this increasingly important imaging technique. This book is a comprehensive reference for researchers, faculty, postdoctoral researchers, and engineers. - Includes every aspect from theoretic reviews of SRS spectroscopy to innovations in instrumentation and current applications of SRS microscopy - Provides copious visual elements that illustrate key information, such as SRS images of various biological samples and instrument diagrams and schematics - Edited by leading experts of SRS microscopy, with each chapter written by experts in their given topics
Download or read book Nonlinear Photonics written by Yili Guo and published by Chinese University Press. This book was released on 2002 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically discusses the nonlinearities in optics, optoelectronics and fiber communications. The theory of optical nonlinearity ties closely with the fiber communication technologies and the applied optoelectronics.
Download or read book Handbook of Optoelectronics Two Volume Set written by John P. Dakin and published by CRC Press. This book was released on 2010-12-12 with total page 1616 pages. Available in PDF, EPUB and Kindle. Book excerpt: A field as diverse as optoelectronics needs a reference that is equally versatile. From basic physics and light sources to devices and state-of-the-art applications, the Handbook of Optoelectronics provides comprehensive, self-contained coverage of fundamental concepts and practical applications across the entire spectrum of disciplines encompassed by optoelectronics. The handbook unifies a broad array of current research areas with a forward-looking focus on systems and applications. Beginning with an introduction to the relevant principles of physics, materials science, engineering, and optics, the book explores the details of optoelectronic devices and techniques including semiconductor lasers, optical detectors and receivers, optical fiber devices, modulators, amplifiers, integrated optics, LEDs, and engineered optical materials. Applications and systems then become the focus, with sections devoted to industrial, medical, and commercial applications, communications, imaging and displays, sensing and data processing, spectroscopic analysis, the art of practical optoelectronics, and future prospects. This extensive resource comprises the efforts of more than 70 world-renowned experts from leading industrial and academic institutions around the world and includes many references to contemporary works. Whether used as a field reference, as a research tool, or as a broad and self-contained introduction to the field, the Handbook of Optoelectronics places everything you need in a unified, conveniently organized format.
