Готові списки джерел за темами / Optical information processing method

Добірка наукової літератури з теми "Optical information processing method"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Зміст

Статті в журналах
Дисертації
Книги
Частини книг
Тези доповідей конференцій
Звіти організацій

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Optical information processing method".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Optical information processing method"

Furusawa, Akira. "Perspective on hybrid quantum information processing: a method for large-scale quantum information processing." Journal of Optics 19, no. 7 (June 6, 2017): 070401. http://dx.doi.org/10.1088/2040-8986/aa72fc.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Shao, Yong Xin, Xiao Ping Yang, Zhi Yong Wang, and Ya Juan Yang. "Fluorescence Information Processing Based on Wavelet De-Noising." Applied Mechanics and Materials 734 (February 2015): 56–63. http://dx.doi.org/10.4028/www.scientific.net/amm.734.56.

Повний текст джерела

Анотація:

<p>In this paper ,the method of the fluorescence lifetime (FL) in fluorescence optical fiber temperature sensor is used to measure the temperature. During the fluorescence information processing , because of existence of the system noise interference, measurement reliability of fluorescence lifetime has been greatly affected, thereby reducing the temperature measurement precision. This paper presents an improved wavelet threshold de-noising method to signal processing, which improves the signal-to-noise ratio and increases the measurement of fluorescence lifetime precision, reduce the error of temperature measurements at the same time. The experimental results demonstrate that this method is effective.</p>

Стилі APA, Harvard, Vancouver, ISO та ін.

Xie, Fu Zhen. "Real-Time Information Processing Method and its Application in Optical Target Tracking System." Applied Mechanics and Materials 536-537 (April 2014): 192–96. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.192.

Повний текст джерела

Анотація:

Optical information processing systems have been widely applied, this paper studies the calculation of the amount of a reduction in the use of genetic algorithms to increase the diversity of the sample algorithm to reduce problems caused by the sample dilution with a resampling method, combined with the finite field resampling, resampling constitute a finite field of genetic algorithms. We using surface to capture the dynamics of template update, to prevent inappropriate tracking results into the template set, pending the outcome of the tracking template is added to the first test for cover. Detect occlusion control template updates. Prevent tracking results of drift.

Стилі APA, Harvard, Vancouver, ISO та ін.

YAHALOMI, EREZ M. "All-optical devices based on three-wave mixing for logic and information processing." Laser and Particle Beams 19, no. 2 (April 2001): 215–18. http://dx.doi.org/10.1017/s0263034601192086.

Повний текст джерела

Анотація:

A method of creating all-optical devices for logic information processing is presented. The mechanism is based on virtual photon interaction in quantum field description, or dipole moment interaction in classical description. The device consists of two optical information bits channels and one optical bits channel of logic commands like AND, NOT, OR. A variety of logic operations can be achieved on one optical setup by polarization change of the logic bits which determines the logic commands. I present another application for the method as an information channels selector.

Стилі APA, Harvard, Vancouver, ISO та ін.

Idesawa, Masanori. "Acquisition of 3-D Optical Information." Journal of Robotics and Mechatronics 1, no. 4 (December 20, 1989): 255. http://dx.doi.org/10.20965/jrm.1989.p0255.

Повний текст джерела

Анотація:

In order for a machine to have the capacity to operate flexibly in a 3-D environment, it is indispensable for it to be equipped with space information acquisition capability, and tools for distance measurement are in turn indispensable for obtaining space information. Indeed distance measurement is basic and important not only for a robot, but also for science and technology in general. Many methods have been proposed for obtaining distance information, ranging from the mechanical contact type through optical and acoustic to electric and magnetic methods, and many are in practical use. Among them the optical method permits measurement of distance without contact and from a remote position, advantages which have led to it being widely applied. One of the most important principles for measuring distance is the triangulation principle. This permits determination of the position of an object from the distance between two observation points together with the angles in the triangle formed by these two points and a target point on the object. Based on this principle, the detection of one specific point in each of the two images obtained from two sets of image input equipment installed at two observation points permits determination of coordinate values in 3-D space. However, this extraction of the point in the second image corresponding to a specified point in the first image is a very difficult subject of study, and no universal method has been developed. To cope with this, active methods, which evade the problem by applying projection of laser light on the surface of an object to identify a bright point or bright line, are widely used. The special feature articles on obtaining 3-D optical information in this issue present some principles and new trial applications of distance acquisition methods for 3-D information, the optical method in particular. There are three reports on active method optical systems developed for robots. These include (1) a high speed measurement method applying space encoding which employs a liquid crystal lattice to project light in changing lattice patterns onto an object dynamically; (2) realization of high speed measurement through projecting and processing multiple light spots; (3) development of a visual sensor for disaster prevention use which can detect objects in flames and smoke utilizing projection of a CO2 gas laser. These are nearly at the level of operational use and are expected to become visual sensors for robots.

Стилі APA, Harvard, Vancouver, ISO та ін.

Gurevich, Аndrei V., and Tatyana S. Bernik. "HOLOGRAPHIC INTERFEROMETRY AS A NON-DESTRUCTIVE TESTING METHOD." Interexpo GEO-Siberia 7, no. 1 (July 8, 2020): 14–17. http://dx.doi.org/10.33764/2618-981x-2020-7-1-14-17.

Повний текст джерела

Анотація:

This article discusses the possibilities of holographic interferometry when used in various fields of activity, such as optical processing of received information, optical-electronic instrumentation, interferometry, laser technology, registration and control of fast processes, non-destructive testing of test objects.

Стилі APA, Harvard, Vancouver, ISO та ін.

Lee, Jun-Pyo, Chul-Young Cho, Jong-Soon Lee, Tae-Yeong Kim, and Cheol-Hee Kwon. "An Optimal Video Editing Method using Frame Information Pre-Processing." Journal of the Korea Society of Computer and Information 15, no. 7 (July 31, 2010): 27–32. http://dx.doi.org/10.9708/jksci.2010.15.7.027.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Kawamura, Minaru, Takuji Morimoto, Yoshiyuki Mori, Ryuichi Sawae, Kenichi Takarabe, Yoshinori Manmoto, and Toshio Sakata. "Effective error correction method for quantum information processing." International Journal of Quantum Chemistry 107, no. 15 (2007): 3067–70. http://dx.doi.org/10.1002/qua.21450.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Santoniy, V. I., Ya I. Lepikh, L. M. Budianskaya, and V. I. Yanko. "FORMATION OF THE OBJECT IDENTIFICATION ZONE WITH LASER INFORMATION-MEASURING SYSTEMS AT SHORT DISTANCES." Sensor Electronics and Microsystem Technologies 18, no. 4 (December 31, 2021): 43–52. http://dx.doi.org/10.18524/1815-7459.2021.4.248179.

Повний текст джерела

Анотація:

The optimization of the methods for the formation of the spatial-energy distribution of the probing radiation power and the processing the receiving signal by the locating laser information-measuring systems (LIMS), taking into account the spatial-temporal structure, is carried out, and the analysis of the existing methods of their processing is carried out too. An assessment of the integral criteria for the LIMS functioning when operating in conditions of interference has been made. The calculation of the parameters of the LIMS main links was carried out, taking into account the correlation between the resolution of the optical system and the capabilities of object detection, recognition and classification. A method was developed for the formation of the probing radiation density distribution and the receiving signal processing, taking into account its space-time structure, which made it possible to determine the optimal duration of the laser probe pulse. The determined duration makes it possible to eliminate errors in measuring the parameters of an object's movement under the influence of a combination of destabilizing factors and a lack of signal processing time, which will ensure the accuracy of the target detection and recognition.

Стилі APA, Harvard, Vancouver, ISO та ін.

Zhao, Lan, and Tao Zeng. "Target Recognition Application of Real-Time Optical Information Processing System." Applied Mechanics and Materials 536-537 (April 2014): 197–200. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.197.

Повний текст джерела

Анотація:

This paper focuses on the visual tracking algorithm in optical imaging surveillance and tracking system. The tracking particle filter framework deemed find sparse representation problem, can effectively overcome the visual tracking algorithm appears in noise, occlusion, background interference and complex situations such as illumination changes. Morphological methods using digital occlusion area is detected to determine whether the date is added to the template tracking results set, thereby updating the control template, to effectively prevent the drift tracking results.

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Дисертації з теми "Optical information processing method"

Братова, Дар'я Романівна. "Формування вейвлет вікон для фільтрації оптичної інформації". Master's thesis, КиЇв, 2019. https://ela.kpi.ua/handle/123456789/30424.

Повний текст джерела

Анотація:

Дисертаційна робота присвячена розробці методу для оптичної обробки інформації. В інженерній практиці для дослідження різноманітних сигналів природного та штучного походження застосовуються різні класи перетворень – Фур’є, Лапласа тощо. З 80-х років минулого століття для частотночасового аналізу нестаціонарних сигналів переважно використовують вейвлетперетворення (ВП). Першими це зробили Морле та Гроссман, займаючись аналізом сейсмічних даних та когерентними квантовими станами відповідно. Математичні засади ВП було закладено Мейєром, який показав існування відповідних функцій (вейвлетів), що утворюють ортогональний базис в просторі L2(R), тобто в просторі дійсних функцій, квадрат котрих є інтегрованим. Добеші здійснила перехід від неперервного до дискретного ВП та розробила клас вейвлетів, що мають максимальну гладкість при фіксованій довжині свого носія. Наразі область застосування ВП – наближення функцій і сигналів, їх фільтрація та стиснення, пошук в сигналі певних особливостей тощо. Магістерська дисертація складається з чотирьох розділів. У першому розділі проаналізовано основні переваги і недоліки вейвлет та Фур’є перетворень та особливості їх використання. Також приведено приклади основних типів вейвлетів. У другому розділі приведено загальну класифікацію вейвлетів та кожного з загальних окремо. Окрім цього розглянуто узагальнені характеристики різноманітних вейвлетів та методи їх розрахунку. Третій розділ присвячено розробці метода формування вейвлет вікон для фільтраціі оптичної інформації. В третьому підрозділі продемонстровані результати аналізу експериментальних робіт попередників, які показують можливість створення синтезованих цифрових нелінійних голограм у якості вейвлет-фільтрів. Четвертий розділ присвячено розробці стартап-проекту «Формування вейвлет вікон для фільтрації оптичної інформації» і аналізу перспектив входження розробки на ринок з маркетологічної точки зору.
The dissertation is dedicated to developing a method for optical information processing. In engineering practice, different classes of transformation - Fourier, Laplace, etc. - are used to investigate the various signals of natural and artificial origin. Since the 1980s, wavelet transform (WF) has been predominantly used for frequency analysis of unsteady signals. Morle and Grossman were the first to do so, analyzing seismic data and coherent quantum states, respectively. The mathematical foundations of the WT were laid down by Meyer, who showed the existence of corresponding functions (wavelets) forming an orthogonal basis in the space L2 (R), that is, in the space of real functions whose square is integrated. Dobeshi made the transition from continuous to discrete WT and developed a class of wavelets that have maximum smoothness at a fixed length of their carrier. Currently, the scope of the WT is the approximation of functions and signals, their filtering and compression, searching for a signal of certain features, and more. The master's thesis consists of four sections. The first section analyzes the main advantages and disadvantages of wavelet and Fourier transforms and the features of their use. Examples of the main types of wavelets are also given. The second section provides a general classification of wavelets and each of them in general. In addition, the general characteristics of various wavelets and their calculation methods are considered. The third section is devoted to the development of a method of forming wavelet windows for filtering optical information. The third section presents the results of an analysis of the previous experimental works that show the possibility of creating synthesized digital nonlinear holograms as wavelet filters. The fourth section is devoted to the development of a startup project "Formation of wavelet windows for filtering optical information" and to analyze the prospects of entering the market from a marketing point of view.

Стилі APA, Harvard, Vancouver, ISO та ін.

ANDO, Hiroki, 大樹安藤, Takeshi SAKAI, 猛. 酒井, Goro OBINATA та 五郎大日方. "磁気記録評価装置用変位拡大位置決め制御機構の機構形状とコントローラの統合化設計". 日本機械学会, 2006. http://hdl.handle.net/2237/8963.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Potter, Duncan J. "Phase-only optical information processing." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/845.

Повний текст джерела

Анотація:

Historically, much scientific work has been performed with two optical systems - the telescope and the microscope. Although Galileo was probably not the first to invent the refracting telescope, his rapid development of the instrument from 1609 results in his association as the father of the telescope today. Certainly he was the first human to view the giant moons of the planet Jupiter - Io, Ganymede, Callisto and Europa - and thus dare to venture our world was not the centre of the universe, and save our race from another thousand years of mysticism. A year later, in 1610, Galileo invented the microscope and this led to the new field of science called 'microscopy' to open up the previously unsuspected world of the ultra small. Tiny life forms no larger than a pinhead were revealed, and with instrumental improvements by later scientists the existance of bacteria proven. This discovery prompted the sterilisation of surgical equipment taken for granted today, saving countless millions of lives since then through freedom from bacterial infection. It is beyond doubt that the new world opened by the invention of the microscope inspired the scientists of that time to seek yet greater magnification and sharper images, to delve deeper into this tiny world. Yet technical improvement in the design of the microscope wase hampered by the lack of a proper theory of image formation. Not until the late nineteenth century, when ABBE and RAYLEIGH provided the foundations of the present day diffraction theory of imaging was the microcope properly understood. The work of this thesis has its roots in the developments of the early twentieth century microscopists. For many years they had observed tiny, transparent organisms and sought ways to improve the visibility of these creatures so that their nature might better be understood. The problem was solved by F.Zernike in 1935 (1, 425 for ref.) when he considered the way the organisms altered the phase of the illuminating light field. By the correct positioning of a thin phase-plate in the back focal plane of the microscope lens, Zernike demonstrated that optical thickness variations of the organism may be rendered visible as intensity variations. In this thesis , the light distribution in the back focal plane of such a lens that results from a transparent object is analysed in detail. From the expression derived by Zernike to explain the operating principle of his invention, we evaluate alternative formulations of the problem and proceed to a full analytical expression for the light field . Though mathematically awkward, it is shown the expression is not unworkable and several useful results are derived. In place of a microscope the study is based on imaging in a modern image processing bench, the physical principles involved being identical. Zernike introduced the idea of image modification through the use of a basic form of phase filter. The second half of this thesis develops this idea to show the use of much more intricate phase filters, which may be used to 'recognise' particular objects. Filter design is followed by experimental results on a special type of phase object, the programmeable Spatial Light Modulator.

Стилі APA, Harvard, Vancouver, ISO та ін.

Le, Jeannic Hanna. "Optical Hybrid Quantum Information processing." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066596/document.

Повний текст джерела

Анотація:

Approche hybride du traitement quantique de l'information La dualité onde-particule a conduit à deux façons d'encoder l'information quantique, les approches continues et discrètes. L'approche hybride a récemment émergé, et consiste à utiliser les concepts et boites à outils des deux approches, afin de venir à bout des limitations intrinsèques à chaque champ. Dans ce travail de thèse, nous allons dans une première partie utiliser des protocoles hybrides de façon à générer des états quantiques non-gaussiens de la lumière. A l'aide d'oscillateurs paramétriques optiques, et de détecteur de photons supraconducteurs, nous pouvons générer des photons uniques extrêmement purs très efficacement, ainsi que des états chats de Schrödinger, qui permettent d'encoder l'information en variables continues. Nous montrons également en quoi des opérations de variables continues peuvent aider cette génération. La méthode utilisée, basée sur la génération " d'états-noyaux " rend en outre ces états plus robustes à la décohérence. Dans une seconde partie, dans le contexte d'un réseau hétérogène, basé sur différents encodages, relier de façon quantique les deux mondes, nécessite l'existence d'intrication hybride de la lumière. Nous introduisons la notion d'intrication hybride, entre des états continus et discrets, et nous en montrons une première application qui est la génération à distance de bit quantique continu. Nous implémentons ainsi également une plateforme polyvalente permettant la génération d'états " micro-macro " intriqués
In quantum information science and technology, two traditionally-separated ways of encoding information coexist -the continuous and the discrete approaches, resulting from the wave-particle duality of light. The first one is based on quadrature components, while the second one involves single photons. The recent optical hybrid approach aims at using both discrete and continuous concepts and toolboxes to overcome the intrinsic limitations of each field. In this PhD work, first, we use hybrid protocols in order to realize the quantum state engineering of various non-Gaussian states of light. Based on optical parametric oscillators and highly-efficient superconducting-nanowire single-photon detectors, we demonstrate the realization of a high-brightness single-photon source and the quantum state engineering of large optical Schrödinger cat states, which can be used as a continuous-variable qubit. We show how continuous-variable operations such as squeezing can help in this generation. This method based on so-called core states also enables to generate cat states that are more robust to decoherence. Second, in the context of heterogeneous networks based on both encodings, bridging the two worlds by a quantum link requires hybrid entanglement of light. We introduce optical hybrid entanglement between qubits and qutrits of continuous and discrete types, and demonstrate as a first application the remote state preparation of continuous-variable qubits. Our experiment is also a versatile platform to study squeezing-induced micro-macro entanglement

Стилі APA, Harvard, Vancouver, ISO та ін.

Deng, Zhijie. "Novel optical devices for information processing." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5863.

Повний текст джерела

Анотація:

Optics has the inherent advantages of parallelism and wide bandwidths in processing information. However, the need to interface with electronics creates a bottleneck that eliminates many of these advantages. The proposed research explores novel optical devices and techniques to overcome some of these bottlenecks. To address parallelism issues we take a specific example of a content-addressable memory that can recognize images. Image recognition is an important task that in principle can be done rapidly using the natural parallelism of optics. However in practice, when presented with incomplete or erroneous information, image recognition often fails to give the correct answer. To address this problem we examine a scheme based on free-space interconnects implemented with diffractive optics. For bandwidth issues, we study possible ways to eliminate the electronic conversion bottleneck by exploring all-optical buffer memories and all-optical processing elements. For buffer memories we examine the specific example of slow light delay lines. Although this is currently a popular research topic, there are fundamental issues of the delay-time-bandwidth product that must be solved before slow light delay lines can find practical applications. For all-optical processing we examine the feasibility of constructing circuit elements that operate directly at optical frequencies to perform simple processing tasks. Here we concentrate on the simplest element, a sub-wavelength optical wire, along with a grating coupler to interface with conventional optical elements such as lenses and fibers. Even such a simple element as a wire has numerous potential applications. In conclusion, information processing by all-optical devices are demonstrated with an associative memory using diffractive optics, an all-optical delay line using room temperature slow light in photorefractive crystals, and a subwavelength optical circuit by surface plasmon effects.

Стилі APA, Harvard, Vancouver, ISO та ін.

Clark, Alex S. "Quantum information processing in optical fibres." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557975.

Повний текст джерела

Анотація:

The use of quantum particles provides unprecedented improvements for some computational tasks and has applications in provably secure communications. The choice of quantum particles for such processes is wide but single photons are a promising candidate due to their extremely low decoherence and light speed trans- mission. Current technology for the generation and processing of single photons is of exceptional experimental interest and forms the basis of my investigations in this thesis. I show the background theory of quantum information and communication, with a general analysis of qubits and optical quantum gates before looking more specifically at different sources of photonic qubits and the generation of photons. I then show recent improvements in photon generation using photonic crystal fi- bres (PCFs), most especially the use of cross-polar phase matching solutions that allow the generation of pure state photons via four wave mixing effects in a X(3} nonlinear medium. These therefore require no spectral filtering to be used for quantum information tasks, thereby improving collection rates and experimental integration times which are crucial when performing multi-photon experiments. The optimization of the parameters for such a source are achieved through the use of an analytical model, and the purity of the photons are tested through the use of quantum interference effects. I move on to show the construction and character- ization of a common two qubit gate, namely the controlled-NOT gate, in optical fibres using fibre based sources and describe it's usefulness and integrability into quantum communication networks. I then calculate bounds on the average gate fidelity of 0.83 < Fave < 0.91 and create a model to show the main sources of error in the controlled-NOT gate operation. If the PCF used in the above sources is pumped in opposite directions in a Sagnac loop configuration, pairs of photons are generated in a maximally entangled Bell state where the polarization of one photon is perfectly correlated with the other photon of the pair. If two such pairs are generated in separate sources and one photon from each pair mixed on a polarizing beam splitter, a fusion operation is performed that entangles those two photons creating a four photon cluster state where all photons are entangled. This cluster state is a universal resource for measurement based quantum computing. In this thesis I show the generation and characterisation of such a cluster state and describe its use to perform a universal set of gates through single qubit measurements. I finally describe future experiments using PCFs and cluster states.

Стилі APA, Harvard, Vancouver, ISO та ін.

Soutar, Colin. "Optical information processing using photorefractive BSO." Thesis, Abertay University, 1991. https://rke.abertay.ac.uk/en/studentTheses/a757b4d3-6c1e-4600-aed8-430e7078c6c5.

Повний текст джерела

Анотація:

Several optical information processing tasks are implemented using photorefractive BSO as a dynamic holographic medium. The physical basis for the mechanism which allows the implementation of these devices is studied. The properties of BSO which make it particularly attractive as a processing medium are highlighted, and experimental results are presented to demonstrate its practical limitations. An extensive study is presented of the influence of optical bias on the grating formation characteristics. This leads to a documentation of the optimum conditions for transient enhancement of a beam diffracted from such a grating. This transient enhancement can be controlled to provide ideal characteristics for the implementation of transient devices such as a novelty filter. A novelty filter utilising this transient enhancement is subsequently demonstrated. It exhibits good temporal discrimination through the choice of suitable external optical conditions, and the use of digital thresholding. The overall device operates at T.V. frame rates. Results are also presented of various optical correlators using BSO. These include the optical intensity correlator. The unique properties of the intensity correlator are stressed by practical demonstration. Specifically, the relative intolerance of the intensity correlator (compared with coherent correlators) to the position of the various components is demonstrated. Also, the spatially incoherent readout light allows the use of a low-optical quality liquid crystal television (LCTV) as a low-cost spatial light modulator. Output results are then presented from the correlator using the LCTV as a dynamic readout device. This provides an updateable hologram as the reference of the correlator which is interrogated at frame rates by the LCTV. Finally, the temporal discrimination of the novelty filter is combined with the character recognition ability of the intensity correlator. This produces an optical processor which will recognise a particular object but will only register it at the output stage when it is moving.

Стилі APA, Harvard, Vancouver, ISO та ін.

Tian, Kehan. "Three dimensional (3D) optical information processing." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35627.

Повний текст джерела

Анотація:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.
Includes bibliographical references (p. 141-151).
Light exhibits dramatically different properties when it propagates in or interacts with 3D structured media. Comparing to 2D optical elements where the light interacts with a sequence of surfaces separated by free space, 3D optical elements provides more degrees of freedom to perform imaging and optical information processing functions. With sufficient dielectric contrast, a periodically structured medium may be capable of forbidding propagation of light in certain frequency range, called band gap; the medium is then called a photonic crystal. Various "defects", i.e. deviations from perfect periodicity, in photonic crystals are designed and widely used as waveguides and microcavities in integrated optical circuits without appreciable loss. However, many of the proposed waveguide structures suffer from large group velocity dispersion (GVD) and exhibit relatively small guiding bandwidth because of the distributed Bragg reflection (DBR) along the guiding direction. As optical communications and optical computing progress, more challenging demands have also been proposed, such as tunable guiding bandwidth, dramatically slowing down group velocity and active control of group velocity. We propose and analyze shear discontinuities as a new type of defect in photonic crystals.
(cont.) We demonstrate that this defect can support guided modes with very low GVD and maximum guiding bandwidth, provided that the shear shift equals half the lattice constant. A mode gap emerges when the shear shift is different than half the lattice constant, and the mode gap can be tuned by changing the amount of the shear shift. This property can be used to design photonic crystal waveguides with tunable guiding bandwidth and group velocity, and induce bound states. The necessary condition for the existence of guiding modes is discussed. By changing the shape of circular rods at the shear interface, we further optimize our sheared photonic crystals to achieve minimum GVD. Based on a coupled resonator optical waveguide (CROW) with a mechanically adjustable shear discontinuity, we also design a tunable slow light device to realize active control of the group velocity of light. Tuning ranges from arbitrarily small group velocity to approximately the value of group velocity in the bulk material with the same average refractive index. The properties of eigenstates of tunable CROWs: symmetry and field distribution, and the dependence of the group velocity on the shear shift are also investigated.
(cont.) Using the finite-difference time-domain (FDTD) simulation, we demonstrate the process of tuning group velocity of light in CROWs by only changing the shear shift. A weakly modulated 3D medium diffracts light in the Bragg regime (in contrast to Raman-Nath regime for 2D optical elements), called volume hologram. Because of Bragg selectivity, volume holograms have been widely used in data storage and 3D imaging. In data storage, the limited diffraction efficiency will affect the signal-noise-ratio (SNR), thus the memory capacity of volume holograms. Resonant holography can enhance the diffraction efficiency from a volume hologram by enclosing it in a Fabry-Perot cavity with the light multiple passes through the volume hologram. We analyze crosstalk in resonant holographic memories and derive the conditions where resonance improves storage quality. We also carry out the analysis for both plane wave and apodized Gaussian reference beams. By utilizing Hermite Gaussian references (higher order modes of Gaussian beams), a new holographic multiplexing method is proposed - mode multiplexing.
(cont.) We derive and analyze the diffraction pattern from mode multiplexing with Hermite Gaussian references, and predict its capability to eliminate the inter-page crosstalk due to the independence of Hermite Gaussian's orthogonality on the direction of signal beam as well as decrease intra-page crosstalk to lower level through apodization. When using volume holograms for imaging, the third dimension of volume holograms provided more degrees of freedom to shape the optical response corresponding to more demanding requirements than traditional optical systems. Based on Bragg diffraction, we propose a new technique - 3D measurement of deformation using volume holography. We derive the response of a volume grating to arbitrary deformations, using a perturbative approach. This result will be interesting for two applications: (a) when a deformation is undesirable and one seeks to minimize the diffracted field's sensitivity to it and (b) when the deformation itself is the quantity of interest, and the diffracted field is used as a probe into the deformed volume where the hologram was originally recorded.
(cont.) We show that our result is consistent with previous derivations motivated by the phenomenon of shrinkage in photopolymer holographic materials. We also present the analysis of the grating's response to deformation due to a point indenter and present experimental results consistent with theory.
by Kehan Tian.
Ph.D.

Стилі APA, Harvard, Vancouver, ISO та ін.

Davison, Alan Stephen. "All-optical signal processing devices." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316729.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Arain, Muzamil Arshad. "INTERFEROMETRY-BASED FREE SPACE COMMUNICATION AND INFORMATION PROCESSING." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3304.

Повний текст джерела

Анотація:

This dissertation studies, analyzes, and experimentally demonstrates the innovative use of interference phenomenon in the field of opto-electronic information processing and optical communications. A number of optical systems using interferometric techniques both in the optical and the electronic domains has been demonstrated in the filed of signal transmission and processing, optical metrology, defense, and physical sensors. Specifically it has been shown that the interference of waves in the form of holography can be exploited to realize a novel optical scanner called Code Multiplexed Optical Scanner (C-MOS). The C-MOS features large aperture, wide scan angles, 3-D beam control, no moving parts, and high beam scanning resolution. A C-MOS based free space optical transceiver for bi-directional communication has also been experimentally demonstrated. For high speed, large bandwidth, and high frequency operation, an optically implemented reconfigurable RF transversal filter design is presented that implements wide range of filtering algorithms. A number of techniques using heterodyne interferometry via acousto-optic device for optical path length measurements have been described. Finally, a whole new class of interferometric sensors for optical metrology and sensing applications is presented. A non-traditional interferometric output signal processing scheme has been developed. Applications include, for example, temperature sensors for harsh environments for a wide temperature range from room temperature to 1000 degree C.
Ph.D.
Optics and Photonics
Optics

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Книги з теми "Optical information processing method"

Mikaėli͡an, A. L. Optical methods for information technologies. [New York, N.Y.]: Allerton Press, 1994.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Zhang, Tianxu, Yuehuan Wang, and Sheng Zhong. Guidance Information Processing Methods in Airborne Optical Imaging Seeker. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6994-0.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

IMA Conference on Image Processing : Mathematical Methods, Algorithms and Applications (3rd 2000 De Montfort University). Image processing III: Mathematical methods, algorithms and applications. Chichester: Horwood Pub. for the Institute of Mathematics and its Applications, 2001.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Andreychikov, Aleksandr, and Ol'ga Andreychikova. Intelligent information systems and artificial intelligence methods. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1009595.

Повний текст джерела

Анотація:

The textbook discusses the methods of artificial intelligence and their application to solve problems from various subject areas. Methods of acquisition, representation and processing of knowledge in intelligent systems, as well as technologies for designing and implementing intelligent systems, are described. Special attention is paid to the application of intelligent systems for the selection of collective solutions, the design of complex systems( objects), the analysis and forecasting of the enterprise. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students enrolled in groups of training master's degree program "Management in technical systems", "Computer and information science", "computer science", "engineering and technology land transport", "engineering and construction technology", "Photonics, instrumentation, optical and biotechnical systems and technology", "aerospace engineering", "engineering and technologies of shipbuilding and water transport", and also in the areas of "automation of technological processes and productions", "mechatronics and robotics".

Стилі APA, Harvard, Vancouver, ISO та ін.

Ahmad, Falih. Optical information processing. Trivandrum, Kerala, India: Research Signpost, 2008.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Optical information processing. Malabar, Fla: R.E. Krieger Pub. Co., 1990.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Casasent, David Paul. Optical metrology for industrialization of optical information processing. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1997.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

W, Lovett Brendon, ed. Introduction to optical quantum information processing. Cambridge: Cambridge University Press, 2010.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Electro-optical system design for information processing. New York: McGraw-Hill, 1991.

Знайти повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Berikashvili, Valeriy. The coherent optics and optical information processing. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/999893.

Повний текст джерела

Анотація:

Presented in the textbook materials relate to the disclosure of the common features of radio and optical telecommunication systems. In detail the device and principles of operation of gas, solid and semiconductor lasers, photodetectors, key photoelectric devices, phototransistors, of photothyristors. The studied display device. Great attention is paid to the elemental basis of fiber-optical systems of collecting and information transfer. Meets the requirements of Federal state educational standards of higher education of the last generation. For students in the areas of "Photonics and Optoinformatics", "Instrumentation" and "optical engineering".

Стилі APA, Harvard, Vancouver, ISO та ін.

Більше джерел

Частини книг з теми "Optical information processing method"

Takeda, Shuntaro, and Akira Furusawa. "Optical Hybrid Quantum Information Processing." In Principles and Methods of Quantum Information Technologies, 439–58. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55756-2_20.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Saggau, P. "Optical Recording of Neuronal Activity: Parallel Versus Serial Methods." In Chemosensory Information Processing, 291–304. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75127-1_20.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Zhang, Tianxu, Yuehuan Wang, and Sheng Zhong. "Optical Imaging Homing Information Processing Method for Fixed Targets." In Guidance Information Processing Methods in Airborne Optical Imaging Seeker, 99–179. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6994-0_5.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Zhang, Tianxu, Yuehuan Wang, and Sheng Zhong. "Optical Imaging Homing Information Processing Method for Moving Targets." In Guidance Information Processing Methods in Airborne Optical Imaging Seeker, 181–272. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6994-0_6.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Gao, Xiaoyang, Tieshan Li, and Qihe Shan. "Optimal Control for Dynamic Positioning Vessel Based on an Approximation Method." In Neural Information Processing, 269–78. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-04239-4_24.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Victora, Michelle, Fumihiro Kaneda, Fedor Bergmann, Jia Jun Wong, Austin Graf, and Paul Kwiat. "Time-Multiplexed Methods for Optical Quantum Information Processing." In Springer Series in Optical Sciences, 179–206. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-98402-5_5.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Xia, Rongsheng, Qingxian Wu, and Xiaohui Yan. "Disturbance Observer Based Optimal Attitude Control of NSV Using $$\theta -D$$ Method." In Neural Information Processing, 219–27. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70136-3_24.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Dong, Bo, Keping Liu, Hui Li, and Yuanchun Li. "A Learning-Based Decentralized Optimal Control Method for Modular and Reconfigurable Robots with Uncertain Environment." In Neural Information Processing, 11–21. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70136-3_2.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Duan, Lijuan, Xuebin Wang, Zhen Yang, Haiyan Zhou, Chunpeng Wu, Qi Zhang, and Jun Miao. "An Emotional Face Evoked EEG Signal Recognition Method Based on Optimal EEG Feature and Electrodes Selection." In Neural Information Processing, 296–305. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24955-6_36.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Zhang, Tianxu, Yuehuan Wang, and Sheng Zhong. "Theoretical Model for Optical Seeker Guidance Information Processing." In Guidance Information Processing Methods in Airborne Optical Imaging Seeker, 11–39. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6994-0_2.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Optical information processing method"

Zhou, CanLin, Fang Li, YiLan Kang, and FuSheng Yu. "Digital speckle correlation method improved by hybrid method." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.668186.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Li, Xiang-rong, Yan-feng Qiao, Wei Liu, and Yao-yu Zhang. "Grating interferometry method for torsion measurement." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.668322.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Gu, Rui, and Ming Zhu. "An edge extracting method of fuzzy thresholding value." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.667951.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Han, Qiu-lei, Miing Zhu, and Zhi-jun Yao. "A segment detection method based on improved Hough transform." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.668296.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Shi, Chao, Zheng Wang, Zhangyuan Chen, Yuping Zhao, and Juhao Li. "A novel method for the implementation of optical interleaving." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.667911.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Wang, Nian, Yi-Zheng Fan, Wen-xia Bao, Dong Liang, and Sui Wei. "An alternative method on camera calibration with one-dimensional objects." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.668303.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Zhou, Huaide, Guangze Li, Chuanwei Xiao, and Zhihang Hao. "A new method for number recognition based on feature extract." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.668325.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Wu, Chuan, Ming Zhu, and Dong Yang. "An object recognition method based on fuzzy theory and BP networks." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.668321.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Fu, Jian-wei, Li-zhi Xiao, Yuan-zhong Zhang, Xiao-liang Zhao, and Hai-feng Chen. "A new method for fiber Bragg grating wavelength demodulation with calibration." In ICO20:Optical Information Processing, edited by Yunlong Sheng, Songlin Zhuang, and Yimo Zhang. SPIE, 2006. http://dx.doi.org/10.1117/12.668395.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Alioshin, V., and K. Shchepakin. "Synchronization method in discrete message transformation systems." In Optical Information Processing: International Conference, edited by Yuri V. Gulyaev and Dennis R. Pape. SPIE, 1994. http://dx.doi.org/10.1117/12.165939.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Звіти організацій з теми "Optical information processing method"

Leith, E. N. White Light Optical Information Processing. Fort Belvoir, VA: Defense Technical Information Center, May 1985. http://dx.doi.org/10.21236/ada160311.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Casasent, David, and C. L. Wilson. Optical metrology for industrialization of optical information processing. Gaithersburg, MD: National Institute of Standards and Technology, 1997. http://dx.doi.org/10.6028/nist.ir.6060.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Yu, Francis T. White-Light Optical Information Processing and Holography. Fort Belvoir, VA: Defense Technical Information Center, July 1985. http://dx.doi.org/10.21236/ada170224.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Tanguay, Armand R. Devices and Systems for Nonlinear Optical Information Processing. Fort Belvoir, VA: Defense Technical Information Center, November 1988. http://dx.doi.org/10.21236/ada203034.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Tsai, Chen S. Integrated Acoustooptic Device Modules for Optical Information Processing. Fort Belvoir, VA: Defense Technical Information Center, July 1988. http://dx.doi.org/10.21236/ada198061.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Schafer, Ronald W. Two-Dimensional Signal Processing, Optical Information Storage and Processing, and Electromagnetic Measurements. Fort Belvoir, VA: Defense Technical Information Center, May 1994. http://dx.doi.org/10.21236/ada281937.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Dodin, I. Y., and N. J. Fisch. Dynamic Volume Holography and Optical Information Processing by Raman Scattering. Office of Scientific and Technical Information (OSTI), September 2002. http://dx.doi.org/10.2172/809839.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Case, Steven K. Gordon Research Conference on Holography and Optical Information Processing (1987). Fort Belvoir, VA: Defense Technical Information Center, February 1987. http://dx.doi.org/10.21236/ada179703.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Schafer, Ronald W. Multidimensional Digital Signal Processing Optical Devices for Information Processing and Electromagnetic Analysis and Measurement. Fort Belvoir, VA: Defense Technical Information Center, July 1996. http://dx.doi.org/10.21236/ada384663.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

I.Y. Dodin and N.J. Fisch. Storing, Retrieving, and Processing Optical Information by Raman Backscattering in Plasmas. Office of Scientific and Technical Information (OSTI), January 2002. http://dx.doi.org/10.2172/793016.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!