Готові списки джерел за темами / HYBRID WDM

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Автор: Grafiati

Опубліковано: 11 вересня 2023

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Статті в журналах з теми "HYBRID WDM"

Yang, Jiang Nan, Li Qun Huang, and Xue Li Tang. "Simulation Research on 40Gbit/s Hybrid WDM/TDM PON System." Applied Mechanics and Materials 602-605 (August 2014): 3035–38. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.3035.

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Recently, wavelength division mulplexing (WDM) technology has been extensively studied, and various WDM-PON architectures have been proposed for next-generation passive optical network (PON). In this paper, we combine the TDM with WDM architecture to achieve high-speed, long-distance transmission. To reduce the cost of ONU, we achive the colorless ONU by placing a Reflective Semiconductor Optical Amplifier (RSOA) in the uplink transmission. We build the whole architecture to simulate the Hybrid WDM/TDM PON System in Optisystem and the experimental results prove that the architecture is feasible and reasonable.

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Nyachionjeka, Kumbirayi, and Wellington Makondo. "Effects of Modulation Techniques (Manchester Code, NRZ or RZ) on the Operation of Hybrid WDM/TDM Passive Optical Networks." International Scholarly Research Notices 2014 (October 30, 2014): 1–8. http://dx.doi.org/10.1155/2014/984157.

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In this paper, the performance and feasibility of a hybrid wavelength division multiplexing/time division multiplexing passive optical network (WDM/TDM PON) system with 128 optical network units (ONUs) is analysed. In this system, triple play services (video, voice and data) are successfully communicated through a distance of up to 28 km. Moreover, we analysed and compared the performance of various modulation formats for different distances in the proposed hybrid WDM/TDM PON. NRZ rectangular emerged as the most appropriate modulation format for triple play transmission in the proposed hybrid PON.

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DELFYETT, P. J., B. MATHASON, I. NITTA, and H. SHI. "NOVEL MULTIWAVELENGTH MODE-LOCKED SEMICONDUCTOR LASERS: PHYSICS AND APPLICATIONS." International Journal of High Speed Electronics and Systems 10, no. 01 (March 2000): 309–17. http://dx.doi.org/10.1142/s0129156400000337.

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We develop and study the physics of a novel hybrid wavelength-division-multiplexed, optical timedivision-multiplexed (WDM-OTDM) mode-locked semiconductor laser for applications in ultra-high data rate communication links, computer interconnects, and optical sampling applications. The key philosophy behind using a hybrid approach is that state-of-the-art system performance can be achieved without the necessity of operating at the limits of a either a pure WDM or OTDM technology platform.

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Kumar, Chakresh, and Ghanendra Kumar. "Novel flattened gain using RAMAN-Erbium doped silica fiber hybrid optical amplifier for super dense wavelength division multiplexing system." International Journal of Engineering, Science and Technology 12, no. 2 (June 1, 2020): 11–17. http://dx.doi.org/10.4314/ijest.v12i2.2.

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We have proposed a very advanced super dense wavelength division multiplexing (SD-WDM) system using RAMANErbium doped silica fiber optical amplifier (EDSFA) hybrid optical amplifier (HOA) in this paper. Performance is evaluated in term of flattened gain and noise figure for C-band. Effect of proposed hybrid optical amplifier also compared with EDFARAMAN, EDFA-SOA and SOA-SOA HOA for the same characteristics. Best rating gain of 37.5 dB with noise figure of 5.4 dB ever recorded from RAMAN-EDSFA HOA. It is also observed that out come from SOA-SOA HOA is not acceptable in term of noise figure of 9.1 dB for 400 x 10 GB/s SD-WDM system. Keywords: SD-WDM, RAMAN-EDSFA, EDFA-RAMAN, EDFA-SOA, SOA-SOA, noise figure, gain

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Róka, Rastislav. "An Effective Evaluation of Wavelength Scheduling for Various WDM-PON Network Designs with Traffic Protection Provision." Symmetry 13, no. 8 (August 23, 2021): 1540. http://dx.doi.org/10.3390/sym13081540.

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Recently, metropolitan and access communication networks have markedly developed by utilizing a variety of technologies. Their bearer communication infrastructures will be mostly exploiting the optical transmission medium where wavelength division multiplexing techniques will play an important role. This contribution discusses the symmetric sharing of common optical network resources in wavelength and time domains. Wavelength-Division Multiplexed Passive Optical Networks (WDM-PON) attract considerable attention regarding the next generation of optical metropolitan and access networks. The main purpose of this contribution is presented by the analysis of possible scheduling of wavelengths for our novel hybrid network topologies considered for WDM-PON networks. This contribution briefly deploys adequate Dynamic Wavelength Allocation (DWA) algorithms for selected WDM-PON network designs with the provision of traffic protection when only passive optical components in remote nodes are utilized. The main part of this study is focused on the use of wavelength scheduling methods for selected WDM-PON network designs. For evaluation of offline and online wavelength scheduling for novel hybrid network topologies, a simulation model realized in the Matlab programming environment allows to analyze interactions between various metropolitan and access parts in the Optical Distribution Network (ODN) related to advanced WDM-PON network designs. Finally, wavelength scheduling methods are compared from a viewpoint of utilization in advanced WDM-PON networks designs.

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Rabiei, P., and A. F. J. Levi. "Analysis of hybrid optoelectronic WDM ADC." Journal of Lightwave Technology 18, no. 9 (September 2000): 1264–70. http://dx.doi.org/10.1109/50.871704.

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Naim, Nani Fadzlina, Muhammad Amirul Hafiz Mohamed Hashim, Suzi Seroja Sarnin, Norsuzila Ya'acob, and Latifah Sarah Supian. "Design of L-Band Multiwavelength Laser for TDM/WDM PON Application." Baghdad Science Journal 18, no. 4(Suppl.) (December 20, 2021): 1365. http://dx.doi.org/10.21123/bsj.2021.18.4(suppl.).1365.

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This paper presents on the design of L-Band Multiwavelength laser for Hybrid Time Division Multiplexing/ Wavelength Division Multiplexing (TDM/WDM) Passive Optical Network (PON) application. In this design, an L-band Mulltiwavelength Laser is designed as the downstream signals for TDM/WDM PON. The downstream signals ranging from 1569.865 nm to 1581.973 nm with 100GHz spacing. The multiwavelength laser is designed using OptiSystem software and it is integrated into a TDM/WDM PON that is also designed using OptiSystem simulation software. By adapting multiwavelength fiber laser into a TDM/WDM network, a simple and low-cost downstream signal is proposed. From the simulation design, it is found that the proposed design is suitable to be used in TDM/WDM PON for up to 64 Optical Network Units (ONUs).

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V. Nguyen, Thang, Minh-Tu V. Pham, Hien T. T. Pham, Hai-Chau Le, and Ngoc T. Dang. "A Performance Comparison of Gigabit-Capable Backhauling Solutions for 5G Cellular Networks." Journal of Science and Technology: Issue on Information and Communications Technology 3, no. 1 (March 31, 2017): 38. http://dx.doi.org/10.31130/jst.2017.36.

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A high-capacity, flexible, cost, and energy efficient backhaul network based on the convergence of optical and wireless technologies is proposed this research work. The proposed backhaul network, which is deployed on wavelength-division multiplexing passive optical network (WDM-PON), supports three backhauling solutions including pure WDM-PON, hybrid WDM-PON/free-space optics (FSO), and hybrid WDM-PON/millimeter-wave (MMW) radio frequency (RF). We firstly have developed mathematical models for performance analysis of the downlink for three comparative backhaul solutions. We then theoretically and comprehensively analyzed the system performance while considering various system parameters such as the total distance, wireless link distance, splitting ratio, amplifier gain, and the bit rate as well as key environment parameters including rain attenuation and atmospheric turbulence. We have also compared the performance of the three alternative backhaul solutions to verify the trade-off between the system performance and the system flexibility/mobility. The numerical results verify the system performance of each backhaul solution. It is demonstrated that combination of these approaches can exploit PON, FSO and RF technologies to provide a flexible and gigabit-bandwidth-capable solution for the fifth generation (5G) backhaul networks.

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Hai-Han Lu, Wen-Shing Tsai, Yen-Liang Lui, and Ya-Lin Chen. "A radio-on-hybrid WDM transport system." IEEE Photonics Technology Letters 17, no. 7 (July 2005): 1576–78. http://dx.doi.org/10.1109/lpt.2005.848262.

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Aldhaibani, A. O., S. A. Aljunid, Hilal A. Fadhil, and M. S. Anuar. "Increasing Capacity and Suppress the Crosstalk by Using Hybrid Optical OFDM/WDM System." Key Engineering Materials 594-595 (December 2013): 1041–44. http://dx.doi.org/10.4028/www.scientific.net/kem.594-595.1041.

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Hybrid optical OFDM/WDM system is proposed to provide longer reach and larger capacity comparing with existing PON systems in order to meet the ever increasing bandwidth demand and data rate of next generation optical access networks. In this paper, two channels using different modulation at 10 Gb/s are used for downstream link. OFDM signals occupy different portions of the available signal spectrum for signal transmissions by using WDM. As a result, the system has good performance based on SNR with 50 km distance and QAM modulation delivers better performance compared with PSK.

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Дисертації з теми "HYBRID WDM"

Huang, Hong. "Hybrid and resilient WDM mesh optical networks." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/15751.

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Bhandari, Saurabh Choi Baek-Young Park E. K. "A hybrid approach for efficient multicasting in WDM networks." Diss., UMK access, 2007.

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Thesis (M.S.)--School of Computing and Engineering. University of Missouri--Kansas City, 2007.
"A thesis in computer science." Typescript. Advisor: Baek-Young Choi and E.K. Park. Vita. Title from "catalog record" of the print edition Description based on contents viewed Dec. 18, 2007. Includes bibliographical references (leaves 55-57). Online version of the print edition.

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Xu, Guoda, John Bartha, Sean Zhang, Wei Qiu, Freddie Lin, Stuart McNamee, and Larry Rheaume. "Electro-Optic Hybrid Rotary Joint (EOHRJ)." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/606501.

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International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California
An advanced electro-optic hybrid rotary joint (EOHRJ) has been developed in Phase II of an AF SBIR effort with Physical Optics Corporation (POC) to replace cable wrap structure for multi-channel rotation-to-fixed (RTF) signal transmission. The EOHRJ meets AFFTC and other range special needs with a generic, high performance, rotary joint solution. At the moment, we have successfully installed and tested the EOHRJ on our KTM tracker system with the following capabilities: 1) able to accommodate hundreds of transmission channels, including electrical power, control, feedback, and low-speed signals; 2) able to accommodate multiple channel, high data rate (over gigabits per second), and bi-directional signal transmission; 3) able to be reliable for harsh environmental operation, adaptive to stringent sized requirement, and accommodating existing electrical and mechanical interfaces. The completed EOHRJ contains three uniquely integrated functional rings. The first and the outmost one is power ring, which provides RTF transmission channels for over 50 high voltage and high current channels. The second and the middle one is low speed electrical signal ring, which provides RTF transmission for over hundred control, feedback, and low speed data signals. The third and the inmost one is optical fiber slip ring, which, incorporating with current advanced signal multiplexing technologies (either time division or wavelength division multiplexing ) is able to provide multiple channel, high data rate, and bi-directional signal transmission. At the moment, the prototype module of the tree-layer EOHRJ has been successfully assembled in Air Force’s tracker system, and is providing a satisfactory performance. This paper presents our joint work on this project.

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Khan, Rameez Ahmed. "Analysis of the performance of Hybrid TWDM Passive OpticalNetworks (NG-PON2)." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-102467.

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In this study, a review of research literature has been carried out to investigate Hybrid Time and wavelength Division Multiplexing techniques with respect to reach, split ratio, and speed of the network. This was done to overcome challenges presented by Passive Optical Networks, such as the reach and the high split ratio. A comparison of different methods clarifies that Hybrid PassiveOptical Networks have a high power-budget that ensure efficient signal transmission. The Optisys software has been used to analyze the performance of the different techniques.

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Ibrahim, Roger. "Amplificateurs optiques à stabilisation de gain rapide : étude et proposition de configurations WDM hybrides EDFA-SOA." Evry, Institut national des télécommunications, 2008. http://www.theses.fr/2008TELE0001.

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Ayi-Yovo, Folly Eli. "Évaluation d’un module électro-optique hybride combinant la photonique sur silicium et sur verre pour des applications de multiplexage en longueur d’onde (WDM)." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT046/document.

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La demande sans cesse croissante des besoins des télécommunications a mis en relief les limites intrinsèques de l’électronique. La photonique s’est révélée comme une solution appropriée à ses limitations. STMicroelectronics a développé une plateforme photonique sur silicium dénommée PIC25G permettant une transmission monocanale à 25 Gb/s. Cependant, l’augmentation du débit avec du multiplexage en longueur d’onde (WDM) se heurte à certaines contraintes. La solution suggérée repose sur une approche hybride intégrant la photonique sur silicium et sur verre par échange d’ions développée au laboratoire IMEP LaHC. La solution consiste en un interposeur verre sur lequel est assemblée une puce photonique sur silicium. Les études ont d’abord porté sur les composants de la puce silicium en particulier sur l’optimisation des coupleurs à réseau et les multiplexeurs à base d’interféromètres de Mach Zehnder cascadés. Ensuite, les composants passifs optiques et électriques de l’interposeur verre ont aussi été étudiés et réalisés. La faisabilité d’un couplage optique entre la puce silicium et l’interposeur a été démontrée. Enfin, les structures de tests nécessaires à la validation de la solution proposée ont été étudiées. Ces structures de tests ont permis de transmettre des signaux radiofréquences jusqu’à 40 GHz entre la puce silicium et l’interposeur verre. Une nouvelle approche de fabrication des guides d’onde optiques de l’interposeur a été suggérée et réalisée afin de répondre aux problèmes du procédé de fabrication. A terme, elle permettra d’avoir un module électro-optique pour des applications haut-débit
The ever-increasing demand for telecommunications needs has highlighted the intrinsic limitations of electronics. Photonics has proven to be a suitable solution to its limitations. STMicroelectronics has developed a silicon photonic platform called PIC25G that allows single-channel transmission at 25 Gb/s. The data rate increase with wavelength division multiplexing (WDM) encounter some constraints. The proposed solution is based on a hybrid approach integrating silicon photonics and glass ions exchanged photonics developed at the IMEP-LaHC laboratory. The solution consists of a glass interposer on which a silicon photonics chip is assembled. First, the studies focused on the components of the silicon chip especially on the optimization of grating couplers and (de)-multiplexers based on cascaded Mach Zehnder interferometers. Then, the optical and electrical passive components of the glass interposer were studied and realized. The feasibility of an optical coupling between the silicon chip and the glass interposer has been demonstrated. Finally, the test structures needed to validate the proposed solution were studied. These test structures allowed to transmit radiofrequency signals up to 40 GHz between the silicon chip and the glass interposer. A new approach to realize the optical waveguides of the interposer has been suggested and carried out in order to address the fabrication issues. Ultimately, this approach will provide an electro-optical module for high-speed applications

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Gatti, Sylvain. "Inscription laser UV pulsé sur nouveau matériau hybride pour codeurs optiques intégrés." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2007. http://tel.archives-ouvertes.fr/tel-00258256.

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L'optique intégrée est une technique très prometteuse pour une fabrication de masse de circuits optiques pour les télécommunications et/ou l'instrumentation.
La technologie sol-gel a déjà démontré son potentiel. Un nouveau matériau sol-gel hybride à polymérisation cationique de type Epoxy a été développé dans le but de la simplification de la synthèse et de l'amélioration des performances en particulier l'adhérence.
Ce travail a pour objectif le développement d'un banc d'écriture laser UV dans une couche Epoxy et l'établissement du protocole de fabrication associé. Ce procédé de polymérisation locale est une alternative prometteuse aux techniques lithographiques par masque.
Ce nouveau banc utilise un laser pulsé travaillant à faible longueur d'onde pour une meilleure résolution et une meilleure polymérisation.
Ce travail a montré la faisabilité de circuits complexes de type multiplexeurs WDM avec un procédé d'inscription à faible coût. Nous avons réalisé les premiers prototypes de circuits dédiés à la sélection multiple de longueurs d'onde pour le (dé)codage du CDMA optique spectral.

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Wallach, Thomas. "A dynamic circadian protein-protein interaction network." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://dx.doi.org/10.18452/16604.

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Die dynamische Regulation von Protein-Protein Interaktionen (PPIs) ist wichtig für den Ablauf von biologischen Prozessen. Die circadiane Uhr, die einen ~24 Stunden Rhythmus generiert und eine Vielzahl von physiologischen Parametern steuert kann auch die Dynamik von PPIs regulieren. Um neue Erkenntnisse über regulatorische Mechanismen innerhalb des molekularen Oszillators zu gewinnen, habe ich zunächst alle möglichen PPIs zwischen 46 circadianen Komponenten mittels eines systematischen yeast-two-hybid (Y2H) Screens bestimmt. Dabei habe ich 109 bis dahin noch unbekannte PPIs identifiziert und einen repräsentativen Anteil mittels Co-Immunopräzipitationsexperimenten in humanen Zellen validiert. Unter den neuen PPIs habe ich bis dahin unbekannte Modulatoren der CLOCK/BMAL1 Transaktivierung identifiziert und dabei die Rolle der Proteinphosphatase 1 (PP1) als dynamischen Regulator der BMAL1 Stabilität funktionell charakterisiert. Das experimentelle PPI Netzwerk wurde mit bereits aus der Literatur bekannten PPIs und Interaktionspartnern ergänzt. Eine systematische RNAi Studie belegte außerdem die Relevanz der aus der Literatur stammenden Interaktoren für die ~24 Stunden Periodizität. Um eine Aussage über die Dynamik der PPIs im Netzwerk treffen zu können, wurden circadiane mRNA Expressionsdaten in das PPI Netzwerk integriert. Systematische Perturbationsstudien, in denen alle Komponenten des experimentellen Netzwerkes mittels RNAi herunterreguliert oder überexprimiert wurden, zeigten eine essentielle Bedeutung für die dynamischen PPIs innerhalb des circadianen Oszillators auf. Desweiteren wurden im circadianen PPI Netzwerk funktionelle Module identifiziert, welche dynamisch organsiert sind. Durch eine systemweite Analyse des humanen Proteoms wurden viele dynamische PPIs identifiziert, die biologische Prozesse wie z.B. Signaltransduktion und Zellzyklus miteinander verbinden. Rhythmische PPIs sind daher von Bedeutung für die zeitliche Organisation zellulärer Physiologie.
Essentially all biological processes depend on protein-protein interactions (PPIs). Timing of such interactions is crucial for regulatory function. Although circadian (~24 hrs) clocks constitute fundamental cellular timing mechanisms regulating important physiological processes PPI dynamics on this timescale are largely unknown. To elucidate so far unknown regulatory mechanisms within the circadian clockwork, I have systematically mapped PPIs among 46 circadian components using high-throughput yeast-two-hybrid (Y2H) interaction experiments. I have identified 109 so far uncharacterized interactions and successfully validated a sub-fraction via co-immunoprecipitation experiments in human cells. Among the novel PPIs, I have identified modulators of CLOCK/BMAL1 function and further characterized the role of protein phosphatase 1 (PP1) in the dynamic regulation of BMAL1 abundance. Furthermore, to generate a more comprehensive circadian PPI network, the experimental network was enriched and extended with additional interactions and interaction partners from literature, some of which turned out to be essential for normal circadian dynamics. The integration of circadian mRNA expression profiles allowed us to determine the interaction dynamics within our network. Systematic genetic perturbation studies (RNAi and overexpression in oscillating human cells) revealed a crucial role of dynamic regulation (via rhythmic PPIs) for the molecular clockwork. Furthermore, dynamic modular organization as a pervasive circadian network feature likely contributes to time-of-day dependent control of many cellular processes. Global analysis of the proteome regarding circadian regulation of biological processes via rhythmic PPIs revealed time-of-day dependent organization of the human interactome. Circadian PPIs dynamically connect many important cellular processes like signal transduction and cell cycle, which contribute to temporal organization of cellular physiology.

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Weimann, Mareike. "A proteome-wide screen utilizing second generation sequencing for the identification of lysine and arginine methyltransferase protein interactions." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://dx.doi.org/10.18452/16581.

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Proteinmethylierung spielt eine immer größere Rolle in der Regulierung zellulärer Prozesse. Die Entwicklung effizienter proteomweiter Methoden zur Detektion von Methylierung auf Proteinen ist limitiert und technisch schwierig. In dieser Arbeit haben wir einen neuen Hefe-Zwei-Hybrid-Ansatz (Y2H) entwickelt, der Proteine, die miteinander wechselwirken, mit Hilfe von Sequenzierungen der zweiten Generation identifiziert (Y2H-Seq). Der neue Y2H-Seq-Ansatz wurde systematisch mit dem Y2H-Seq-Ansatz verglichen. Dafür wurde ein Bait-Set von 8 Protein-Arginin-Methyltransferasen, 17 Protein-Lysin-Methyltransferasen und 10 Demethylasen gegen 14,268 Prey-Proteine getestet. Der Y2H-Seq-Ansatz ist weniger arbeitsintensiv, hat eine höhere Sensitivität als der Standard Y2H-Matrix-Ansatz und ist deshalb besonders geeignet, um schwache Interaktionen zwischen Substraten und Protein-Methyltransferasen zu detektieren. Insgesamt wurden 523 Wechselwirkungen zwischen 22 Bait-Proteinen und 324 Prey-Pr oteinen etabliert, darunter 11 bekannte Methyltransferasen-Substrate. Netzwerkanalysen zeigen, dass Methyltransferasen bevorzugt mit Transkriptionsregulatoren, DNA- und RNA-Bindeproteinen wechselwirken. Diese Daten repräsentieren das erste proteomweite Wechselwirkungsnetzwerk über Protein-Methyltransferasen und dienen als Ressource für neue potentielle Methylierungssubstrate. In einem in vitro Methylierungsassay wurden exemplarisch mit Hilfe massenspektrometrischer Analysen die methylierten Aminosäurereste einiger Kandidatenproteine bestimmt. Von neun getesteten Proteinen waren sieben methyliert, zu denen gehören SPIN2B, DNAJA3, QKI, SAMD3, OFCC1, SYNCRIP und WDR42A. Wahrscheinlich sind viele Methylierungssubstrate im Netzwerk vorhanden. Das vorgestellte Protein-Protein-Wechselwirkungsnetzwerk zeigt, dass Proteinmethylierung sehr unterschiedliche zelluläre Prozesse beeinflusst und ermöglicht die Aufstellung neuer Hypothesen über die Regulierung Molekularer Mechanismen durch Methylierung.
Protein methylation on arginine and lysine residues is a largely unexplored posttranslational modification which regulates diverse cellular processes. The development of efficient proteome-wide approaches for detecting protein methylation is limited and technically challenging. We developed a novel workload reduced yeast-two hybrid (Y2H) approach to detect protein-protein interactions utilizing second generation sequencing. The novel Y2H-seq approach was systematically evaluated against our state of the art Y2H-matrix screening approach and used to screen 8 protein arginine methyltransferases, 17 protein lysine methyltransferases and 10 demethylases against a set of 14,268 proteins. Comparison of the two approaches revealed a higher sensitivity of the new Y2H-seq approach. The increased sampling rate of the Y2H-seq approach is advantageous when assaying transient interactions between substrates and methyltransferases. Overall 523 interactions between 22 bait proteins and 324 prey proteins were identified including 11 proteins known to be methylated. Network analysis revealed enrichment of transcription regulator activity, DNA- and RNA-binding function of proteins interacting with protein methyltransferases. The dataset represents the first proteome-wide interaction network of enzymes involved in methylation and provides a comprehensively annotated resource of potential new methylation substrates. An in vitro methylation assay coupled to mass spectrometry revealed amino acid methylation of candidate proteins. Seven of nine proteins tested were methylated including SPIN2B, DNAJA3, QKI, SAMD3, OFCC1, SYNCRIP and WDR42A indicating that the interaction network is likely to contain many putative methyltransferase substrate pairs. The presented protein-protein interaction network demonstrates that protein methylation is involved in diverse cellular processes and can inform hypothesis driven investigation into molecular mechanisms regulated through methylation.

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Lan, Hsiao-Chin, and 藍孝晉. "Grismlens Hybrid WDM System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/43417504384143943181.

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Книги з теми "HYBRID WDM"

Seņkāns, Uģis. Development and Evaluation of Hybrid FBG Sensors and WDM-PON Fiber Optical Systems. RTU Press, 2021. http://dx.doi.org/10.7250/9789934227004.

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With the development of fiber optical data transmission technologies and infrastructure on a global scale, the use of fiber optical sensors to perform sensing functions is becoming increasingly important mainly due to their advantages, such as small size, light weight, multiplexing capabilities and others. Therefore, in order to ensure more efficient use of optical sensor technologies, it is necessary to research and search for new solutions for the integration and use of fiber optical sensors in existing and future fiber optical communication system architecture. The main goal of the Doctoral Thesis is to study and evaluate the interaction of FBG fiber optical sensor networks and WDM-PON metro-access transmission systems implemented in a single system with theoretical and experimental research. In order to evaluate their performance in a unified system, a detailed study of the interaction between the FBG optical sensor network and the fiber optic data transmission system has been performed by implementing mathematical modeling and experimental development of such systems.

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anandarajah, Prince M. Generation and optimization of picosecond optical pulses for use in hybrid WDM/OTDM networks. 2003.

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Datta, Debasish. Optical Networks. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198834229.001.0001.

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This book presents an in-depth deliberation on optical networks in four parts, capturing the past, present, and ensuing developments in the field. Part I has two chapters presenting an overview of optical networks and the enabling technologies. Part II has three chapters dealing with the single-wavelength optical networks: optical LANs/MANs, optical access networks using passive optical network architecture, SONET/SDH, optical transport network and resilient packet ring. Part III consists of four chapters on WDM-based optical networks, including WDM-based local/metropolitan networks (LANs/MANs) using single and multihop architectures over passive-star couplers, WDM/TWDM access networks as an extension of PONs with WDM transmission, WDM metro ring networks covering circuit-switched (using point-to-point WDM and wavelength-routed transmission) plus packet-switched architectures and WDM long-haul backbone networks presenting the offline and online design methodologies using wavelength-routed transmission. Part IV deals with some selected topics in six chapters. The first deals with transmission impairments and power-consumption issues in optical networks, while the next three chapters deal with the survivable optical networks, network control and management techniques, including GMPLS, ASON, and SDN/SDON, and datacenter networks using electrical, optical, and hybrid switching techniques. The final two chapters present elastic optical networks using flexible grid for better utilization of the optical-fiber spectrum and optical packet and burst-switched networks. The three appendices present the basics of the linear programming techniques, noise processes encountered in the optical communication systems, and the fundamentals of queuing theory and its applications in telecommunication networks. (238 words)

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Частини книг з теми "HYBRID WDM"

Melián, Belén. "Using Memory to Improve the VNS Metaheuristic for the Design of SDH/WDM Networks." In Hybrid Metaheuristics, 82–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11890584_7.

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Podnar, Hrvoje, and Jadranka Skorin-Kapov. "A Genetic Algorithm for Optimizing Throughput in Non-broadcast WDM Optical Networks." In Hybrid Information Systems, 323–38. Heidelberg: Physica-Verlag HD, 2002. http://dx.doi.org/10.1007/978-3-7908-1782-9_24.

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Slothouber, Frans N. C., Sonia M. Heemstra de Groot, and Ignas G. M. M. Niemegeers. "Management of Dynamically Configurable WDM Hybrid Fiber Access Networks." In Optical Networking, 288–99. London: Springer London, 1999. http://dx.doi.org/10.1007/978-1-4471-0525-1_31.

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Vardakas, John S., Vassilios G. Vassilakis, and Michael D. Logothetis. "Blocking Analysis in Hybrid TDM-WDM Passive Optical Networks." In Performance Modelling and Analysis of Heterogeneous Networks, 441–65. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003339052-26.

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Singh, Mehtab, and Jyoteesh Malhotra. "4 × 10 Gbps Hybrid WDM-MDM FSO Transmission Link." In Proceedings of the International Conference on Paradigms of Computing, Communication and Data Sciences, 443–51. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-7533-4_34.

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Kato, T., M. Tsukitani, M. Hirano, E. Yanada, M. Onishi, M. Nakamura, Y. Ohga, E. Sasaoka, Y. Makia, and M. Nishimura. "Ultra Low Nonlinearity Pure Silica Core Fiber and its Application to Hybrid Transmission Lines." In Massive WDM and TDM Soliton Transmission Systems, 365–77. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/0-306-47125-6_23.

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Jin, Yongdong, and Mohsen Kavehrad. "Performance Analysis of a WDM-SDM Hybrid Optical Cross-Connect System." In Applications of Photonic Technology 2, 287–92. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-9250-8_47.

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Talay, A. Cagatay, and Sema Oktug. "A GA/Heuristic Hybrid Technique for Routing and Wavelength Assignment in WDM Networks." In Lecture Notes in Computer Science, 150–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24653-4_16.

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Sundar, D. Shanmuga, V. Nidhyavijay, T. Sridarshini, and A. Sivanantha Raja. "Performance analysis of a multichannel WDM hybrid optical communication system for long haul communication." In Frontier Research and Innovation in Optoelectronics Technology and Industry, 347–54. London, UK : CRC Press/Balkema, an imprint of the Taylor & Francis Group, [2019]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429447082-51.

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Cavendish, Dirceu, Aleksandar Kolarov, and Bhaskar Sengupta. "Minimizing the Number of Wavelength Conversions in WDM Networks with Hybrid Optical Cross-Connects." In Operations Research/Computer Science Interfaces Series, 203–24. Boston, MA: Springer US, 2006. http://dx.doi.org/10.1007/0-387-29234-9_11.

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Тези доповідей конференцій з теми "HYBRID WDM"

Rabiei, P., and A. F. J. Levi. "Hybrid optoelectronic WDM ADC." In Conference on Lasers and Electro-Optics (CLEO 2000). Technical Digest. Postconference Edition. TOPS Vol.39. IEEE, 2000. http://dx.doi.org/10.1109/cleo.2000.907481.

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Liu, Yang, Guoping Zhang, and Qing Li. "WDM/TDM Hybrid GPON Technology." In 2011 Symposium on Photonics and Optoelectronics (SOPO 2011). IEEE, 2011. http://dx.doi.org/10.1109/sopo.2011.5780515.

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Miyazaki, Noriyuki, Keiji Tanaka, and Yukio Horiuchi. "Hybrid TDM-WDM EPON Repeater." In 2008 Conference on Optical Fiber Communication - OFC 2008 Collocated National Fiber Optic Engineers. IEEE, 2008. http://dx.doi.org/10.1109/ofc.2008.4528267.

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Parker, M. C. "Digital holographic tuning mechanism for WDM." In IEE Colloquium on Optical and Hybrid Access Networks. IEE, 1996. http://dx.doi.org/10.1049/ic:19960321.

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Xiaowen Dong, Taisir El-Gorashi, and Jaafar M. H. Elmirghani. "Hybrid-power IP over WDM network." In 2010 Seventh International Conference on Wireless and Optical Communications Networks - (WOCN). IEEE, 2010. http://dx.doi.org/10.1109/wocn.2010.5587357.

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Braun, Steve W. "Hybrid WDM Ring-Bus Optical Network." In 2008 Conference on Optical Fiber Communication - OFC 2008 Collocated National Fiber Optic Engineers. IEEE, 2008. http://dx.doi.org/10.1109/ofc.2008.4528159.

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Vohra, Sandeep, Anthony Dandridge, Bruce Danver, and Alan Tveten. "An Hybrid WDM/TDM Reflectometric Array." In Optical Fiber Sensors. Washington, D.C.: OSA, 1996. http://dx.doi.org/10.1364/ofs.1996.th329.

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Lin, Wen-I., Ming-Huei Shyu, Chia Hsien Lee, Ardhendu Sekhar Patra, and Hai-Han Lu. "Radio-on-Hybrid WDM Transport Systems." In Coherent Optical Technologies and Applications. Washington, D.C.: OSA, 2008. http://dx.doi.org/10.1364/cota.2008.jmb5.

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Gilfedder, T. H. "Interferometric noise in dense WDM routed passive optical networks." In IEE Colloquium on Optical and Hybrid Access Networks. IEE, 1996. http://dx.doi.org/10.1049/ic:19960320.

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Conombo, Saidou, Mamadou Diallo Diouf, Samuel Ouya, and Ahmed Dooguy Kora. "WDM-OIL-TDM Hybrid Passive Optical Network." In 2020 International Conference on Electrical, Communication, and Computer Engineering (ICECCE). IEEE, 2020. http://dx.doi.org/10.1109/icecce49384.2020.9179347.

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Звіти організацій з теми "HYBRID WDM"

Kazovsky, Leonid G., Ian White, Matt Rogge, Kapil Shrikhande, and Erie Hu. Internet Protocol-Hybrid Opto-Electronic Ring Network (IP-HORNET): A Novel Internet Protocol-Over-Wavelength Division Multiplexing (IP-Over-WDM) Multiple-Access Metropolitan Area Network (MAN). Fort Belvoir, VA: Defense Technical Information Center, April 2003. http://dx.doi.org/10.21236/ada415560.

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Ghaffari, B., and E. Geraniotis. Analysis of Coherent Random-Carrier CDMA and Hybrid WDMA/CDMA Multiplexing for High-Capacity Optical Networks. Fort Belvoir, VA: Defense Technical Information Center, January 1989. http://dx.doi.org/10.21236/ada454792.

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Ohad, Nir, and Robert Fischer. Regulation of Fertilization-Independent Endosperm Development by Polycomb Proteins. United States Department of Agriculture, January 2004. http://dx.doi.org/10.32747/2004.7695869.bard.

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Arabidopsis mutants that we have isolated, encode for fertilization-independent endosperm (fie), fertilization-independent seed2 (fis2) and medea (mea) genes, act in the female gametophyte and allow endosperm to develop without fertilization when mutated. We cloned the FIE and MEA genes and showed that they encode WD and SET domain polycomb (Pc G) proteins, respectively. Homologous proteins of FIE and MEA in other organisms are known to regulate gene transcription by modulating chromatin structure. Based on our results, we proposed a model whereby both FIE and MEA interact to suppress transcription of regulatory genes. These genes are transcribed only at proper developmental stages, as in the central cell of the female gametophyte after fertilization, thus activating endosperm development. To test our model, the following questions were addressed: What is the Composition and Function of the Polycomb Complex? Molecular, biochemical, genetic and genomic approaches were offered to identify members of the complex, analyze their interactions, and understand their function. What is the Temporal and Spatial Pattern of Polycomb Proteins Accumulation? The use of transgenic plants expressing tagged FIE and MEA polypeptides as well as specific antibodies were proposed to localize the endogenous polycomb complex. How is Polycomb Protein Activity Controlled? To understand the molecular mechanism controlling the accumulation of FIE protein, transgenic plants as well as molecular approaches were proposed to determine whether FIE is regulated at the translational or posttranslational levels. The objectives of our research program have been accomplished and the results obtained exceeded our expectation. Our results reveal that fie and mea mutations cause parent-of-origin effects on seed development by distinct mechanisms (Publication 1). Moreover our data show that FIE has additional functions besides controlling the development of the female gametophyte. Using transgenic lines in which FIE was not expressed or the protein level was reduced during different developmental stages enabled us for the first time to explore FIE function during sporophyte development (Publication 2 and 3). Our results are consistent with the hypothesis that FIE, a single copy gene in the Arabidopsis genome, represses multiple developmental pathways (i.e., endosperm, embryogenesis, shot formation and flowering). Furthermore, we identified FIE target genes, including key transcription factors known to promote flowering (AG and LFY) as well as shoot and leaf formation (KNAT1) (Publication 2 and 3), thus demonstrating that in plants, as in mammals and insects, PcG proteins control expression of homeobox genes. Using the Yeast two hybrid system and pull-down assays we demonstrated that FIE protein interact with MEA via the N-terminal region (Publication 1). Moreover, CURLY LEAF protein, an additional member of the SET domain family interacts with FIE as well. The overlapping expression patterns of FIE, with ether MEA or CLF and their common mutant phenotypes, demonstrate the versatility of FIE function. FIE association with different SET domain polycomb proteins, results in differential regulation of gene expression throughout the plant life cycle (Publication 3). In vitro interaction assays we have recently performed demonstrated that FIE interacts with the cell cycle regulatory component Retinobalsoma protein (pRb) (Publication 4). These results illuminate the potential mechanism by which FIE may restrain embryo sac central cell division, at least partly, through interaction with, and suppression of pRb-regulated genes. The results of this program generated new information about the initiation of reproductive development and expanded our understanding of how PcG proteins regulate developmental programs along the plant life cycle. The tools and information obtained in this program will lead to novel strategies which will allow to mange crop plants and to increase crop production.

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