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Dissertations / Theses on the topic 'Optical transmission system'

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Published: 4 June 2021

Last updated: 25 May 2024

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1

Moura, Luis Miguel da Silva Carvalho de. "Circuit techniques for very high speed digital optical transmission : timing extraction sub-system." Thesis, Bangor University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262231.

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2

Liu, Tao. "Advanced Coded Modulation for High Speed Optical Transmission." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/613291.

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In the recent years, the exponential Internet traffic growth projections place enormous transmission rate demand on the underlying information infrastructure at every level, from the long haul submarine transmission to optical metro networks. In recent years, optical transmission at 100 Gb/s Ethernet date rate has been standardized by ITU-T and IEEE forums and 400Gb/s and 1Tb/s rates per DWDM channel systems has been under intensive investigation which are expected to be standardized within next couple of years.To facilitate the implementation of 400GbE and 1TbE technologies, the new advanced

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3

Al-Dabbagh, Rasha Khalid Mohammed. "A photonic generation and transmission system for millimetre-wave futuristic communications." Thesis, Brunel University, 2018. http://bura.brunel.ac.uk/handle/2438/16249.

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In this thesis, a fully millimetre-wave (mm-wave) generation and transmission system is proposed for futuristic communications. Significant challenges have been dealt with regarding the proposed system, including designing the mm-wave generation and transmission technique, and its application in cellular networks. These challenges are presented through five main contributions and validated via Optiwave Design Software and MATLAB simulation tools. Firstly, three novel photonic generation methods are proposed and designed based on the characteristics of Brillouin fibre laser and the Stimulated B

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4

CIGLIUTTI, ROBERTO. "Multilevel Nyquist-WDM Ultra-Long-Haul Coherent Optical Transmission Systems." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2506370.

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The continuous expansion of multimedia terminals, like smart-phones, besides the introduction of new multimedia services, like the high-definition streaming television, determines a constant increase in the demand of high-speed connectivity. This scenario requires a permanent update of the data capacity in local access networks. Nevertheless, a proper capacity upgrades plan, with new optical links deployment, has required for back-bone optical networks in order to avoid possible networks congestions. Such effect has theoretically forecast as probable in actual networks within next few tenths y

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5

Carbó, Meseguer Alexis. "Semiconductor optical amplifiers for ultra-wideband optical systems." Thesis, Evry, Institut national des télécommunications, 2018. http://www.theses.fr/2018TELE0010/document.

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Au cours des dernières décennies, le monde a subi une révolution majeure qui a profondément affecté comment on utilise les réseaux de communication. De nouveaux services et applications ont été apparus, tels que les réseaux sociaux, les jeux en ligne ou le streaming en direct, qui exigent une augmentation constante de la capacité des systèmes optiques. La motivation de ce travail est donc d'étudier la mise en œuvre d'un nouvel amplificateur SOA à très large bande avec une bande passante de plus de 100 nm afin d’étendre la capacité du système. L'utilisation de l'amplification SOA change complèt

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6

Larson, Bruce C. (Bruce Carl). "An optical telemetry system for wireless transmission of biomedical signals across the skin." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/16716.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Vita.<br>Includes bibliographical references (p. 236-239).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>A technology base for optically-coupled systems was developed that permits in-vivo transmission of biomedical signals across the skin. By complete implantation of sensors and instrumentation electronics, problems with percutaneous connectors were eliminated. Optical pow

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7

Kaiser, Wilfried [Verfasser]. "Impact of advanced modulation formats on the system performance of high-speed optical transmission systems / Wilfried Kaiser." Aachen : Shaker, 2003. http://d-nb.info/1181600766/34.

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8

Carbó, Meseguer Alexis. "Semiconductor optical amplifiers for ultra-wideband optical systems." Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2018. http://www.theses.fr/2018TELE0010.

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Au cours des dernières décennies, le monde a subi une révolution majeure qui a profondément affecté comment on utilise les réseaux de communication. De nouveaux services et applications ont été apparus, tels que les réseaux sociaux, les jeux en ligne ou le streaming en direct, qui exigent une augmentation constante de la capacité des systèmes optiques. La motivation de ce travail est donc d'étudier la mise en œuvre d'un nouvel amplificateur SOA à très large bande avec une bande passante de plus de 100 nm afin d’étendre la capacité du système. L'utilisation de l'amplification SOA change complèt

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9

Xu, Tianhua. "Digital Dispersion Equalization and Carrier Phase Estimation in 112-Gbit/s Coherent Optical Fiber Transmission System." Licentiate thesis, KTH, Optik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34034.

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Coherent detection employing multilevel modulation format has become one of the most promising technologies for next generation high speed transmission system due to the high power and spectral efficiencies. With the powerful digital signal processing (DSP), coherent optical receivers allow the significant equalization of chromatic dispersion (CD), polarization mode dispersion (PMD), phase noise (PN) and nonlinear effects in the electrical domain. Recently, the realizations of these DSP algorithms for mitigating the channel distortions in the transmission system are the most attractive investi

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10

Reyhanioglu, Erinc. "Selection Of Light Source And Implementation Of Data Acquisition System Of An Optical Experimental Setup." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/1044361/index.pdf.

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The construction of an optical experimental setup is the objective, to measure transmission coefficient of optical components used in plasma investigations. Thus, proper light source either with continuous or line radiation spectrum should be used. In addition, the detectors&rsquo<br>output signal is recorded on a PC based data recorder after being digitized by an analog to digital converter card.

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11

Chen, Hang. "Optical Encryption Techniques for Color Image and Hyperspectral Data." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0374.

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La sécurité est un problème important dans la transmission et le stockage de l'image, tandis que le cryptage est un moyen d'assurer la sécurité qui est requise dans de nombreuses applications (télévision par câble, la communication d'images militaires, systèmes d'imagerie confidentielle, etc.). Toutefois, à l'instar du message texte, les données images présentent des caractéristiques spéciales telles que la haute capacité, la redondance et la haute corrélation entre les pixels, et nécessite souvent une transmission et des traitements temps réel pour certaines applications. Construire un systèm

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12

Al-Olofi, Mohammed [Verfasser]. "Transmission of Ultra-Wideband Radio System over Optical Wireless Links using Intensity Modulation Direct Detection / Mohammed Al-Olofi." München : Verlag Dr. Hut, 2016. http://d-nb.info/1113335602/34.

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13

Jarajreh, Mutsam Abdel-karim. "Coherent optical OFDM modem employing artificial neural networks for dispersion and nonlinearity compensation in a long-haul transmission system." Thesis, Northumbria University, 2012. http://nrl.northumbria.ac.uk/9596/.

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In order to satisfy the ever increasing demand for the bandwidth requirement in broadband services the optical orthogonal frequency division multiplexing (OOFDM) scheme is being considered as a promising technique for future high-capacity optical networks. The aim of this thesis is to investigate, theoretically, the feasibility of implementing the coherent optical OFDM (CO-OOFDM) technique in long haul transmission networks. For CO-OOFDM and Fast-OFDM systems a set of modulation formats dependent analogue to digital converter (ADC) clipping ratio and the quantization bit have been identified,

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14

Almeida, Hugo Miguel Moreira de. "Planeamento de redes de transporte de dados para o SKA (Square Kilometre Array)." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13614.

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Mestrado em Engenharia Eletrónica e Telecomunicações<br>The SKA (Square Kilometre Array) will be the world’s largest and most sensitive radio telescope with a square kilometre (one million square metres) of collecting area, expecting to be able to clarify some of the main questions about the universe. This project is currently in the preparatory phase, having already established the regions and distributions of the various antennas and the location of signal processing and storage units. In order to satisfy the scientific requirements, the SKA is comprised of thousands of radio wave receivers

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15

Šustr, Pavel. "Optický zesilovač v laboratorní výuce." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218165.

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The aim of this thesis is to introduce to reader the application and use of optical EDFA amplifiers in optical transmission and to show wiring and practical test, including measurements on amplifier. The aim of this thesis is to propose the use of optical amplifier in laboratory practice for subject Optical networks. The thesis briefly introduces the problems of data transmissions through optical fibers with a focus on the use of optical amplifiers. The basic characteristic of optical transmission paths and the reasons for the use of optical amplifiers are described here. One entire chapter is

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16

Silva, Edson Porto da 1988. "Transmissão óptica com recepção coerente e alta eficiência espectral aplicando sequências de pulsos RZ e pré-filtragem optica em canais limitados em banda." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259687.

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Orientadores: Michel Zamboni Rached, Julio Cesar Rodrigues Fernandes de Oliveira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-23T22:08:51Z (GMT). No. of bitstreams: 1 Silva_EdsonPortoda_M.pdf: 2920023 bytes, checksum: 44d415ca69c358709f1b816f7e603047 (MD5) Previous issue date: 2013<br>Resumo: O Resumo poderá ser visualizado no texto completo da tese digital<br>Abstract: The complete Abstract is available with the full electronic document.<br>Mestrado<br>Telecomunicações e Telemática<br>M

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17

Al-Bermani, Ali Verfasser], Reinhold [Akademischer Betreuer] Noé, and Ulrich [Akademischer Betreuer] [Rückert. "Implementation and investigation of a real-time optical 16-QAM transmission system with FPGA-based coherent receiver / Ali Al-Bermani. Betreuer: Reinhold Noé ; Ulrich Rückert." Paderborn : Universitätsbibliothek, 2013. http://d-nb.info/1042230412/34.

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18

Ringar, Octave. "Utilisation des techniques avancées d’Emission / Réception multi-antennes pour une transmission optique large bande." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0100/document.

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Les systèmes de communication FSO sont des candidats potentiels pour de solutions de transmission spatiale à large bande. C’est pourquoi la présente thèse s’inscrit dans une contribution d’une nouvelle architecture de réseau FSO dans le cas d’une liaison de communication entre un satellite géostationnaire et une station terrienne. Elle traite aussi de l’influence de l’angle zénithal sur la qualité de la liaison optique en raison de la variation de la scintillation due à la complexité de l’atmosphère. Nous avons établi un nouveau canal de communication tenant compte de la subdivision de l’atmos

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19

Abobaker, Abdosllam M. "Analytical design of dispersion-managed optical fibre transmission systems." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=24668.

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20

Rotich, Enoch Kirwa. "Fibre optic network supporting high speed transmission in the square kilometre array, South Africa." Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/6552.

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This thesis provides in-depth information on the high speed optical transport requirements for the Square Kilometre Array. The stringent data rates as well as timing and synchronization requirements are dealt with respect to the optical fibre technology. Regarding the data transport, we draw a clear comparison between a typical telecommunication access network and a telescope network. Invoking simulations and experiments on the field and laboratory test bed, we successfully implement a suitable telescope network using vertical cavity surface emitting laser (VCSEL) technology. Polarization effe

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21

Blank, Lutz Christian. "High capacity optical fibre transmission systems." Thesis, Bangor University, 1992. https://research.bangor.ac.uk/portal/en/theses/high-capacity-optical-fibre-transmission-systems(39ab5e67-373b-4ff4-ab06-ebb362123c5f).html.

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In this thesis a number of system design options are studied for the generation and processing of ultra—high speed optical data, based on the technique of Optical Time Division Multiplexing. The limits are investigated with regard to maximum unregenerated transmission distances for linear propagation over single mode fibre with large chromatic dispersion. Overall, the aim is to minimise the bandwidth requirements of electronic and opto—electronic system components for a given optical line capacity whilst at the same time maximising the chromatic dispersion limited propagation distances, thus e

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22

Pudo, Dominik. "On the temporal Talbot effect in optical communication systems." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103279.

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Presented in this thesis is a study of the Temporal Talbot effect within the context of return-to-zero data communication systems. First, we examine its features and limitations subject to realistic input conditions. We consider three independent impairments in the incident pulse train: excessively broad pulse width, amplitude noise, and timing jitter. In addition to determining and quantifying the effects of all these impairments, we demonstrate a beneficial, mitigating effect of the Talbot self-imaging process on the two last ones. We then demonstrate a novel, tunable pulse repetition multip

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23

Rothnie, Derek Malcolm. "Link optimisation for optical WDM transmission systems." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298281.

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24

RAMIREZ, MISAEL ALBERTO RABANAL. "ON-OFF DIGITAL TRANSMISSION IN OPTICAL SYSTEMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1989. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9248@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Uma análise de desempenho da transmissão digital, com modulação tipo ON-OFF através de fibras óticas foi feita incluindo todos os estágios do circuito. A partir desta análise foi desenvolvido um método para o dimensionamento e o cálculo da qualidade destes sistemas óticos digitais. O método permite calcular o comprimento máximo da fibra ótica em função das características dos diversos circuitos que compõem o enlace, taxa de transmissão e objetivo de qualidade.<br>It was made an analysis of performance of digital transmi

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25

Wong, William Siu-Cheong. "Optical pulse storage rings and transmission systems." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36577.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.<br>Includes bibliographical references (leaves 67-71).<br>by William Siu-Cheong Wong.<br>M.S.

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26

Guiomar, Fernando Pedro Pereira. "Digital nonlinear equalization for optical transmission systems." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15977.

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Doutoramento em Engenharia Eletrotécnica<br>This thesis focuses on digital equalization of nonlinear fiber impairments for coherent optical transmission systems. Building from well-known physical models of signal propagation in single-mode optical fibers, novel nonlinear equalization techniques are proposed, numerically assessed and experimentally demonstrated. The structure of the proposed algorithms is strongly driven by the optimization of the performance versus complexity tradeoff, envisioning the near-future practical application in commercial real-time transceivers. The work is initia

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27

Widdowson, Terence. "Ultra-long haul optical fibre transmission systems." Thesis, Aston University, 1995. http://publications.aston.ac.uk/8093/.

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This thesis examines experimentally options for optical fibre transmission over oceanic distances. Its format follows the chronological evolution of ultra-long haul optical systems, commencing with opto-electronic regenerators as repeaters, progressing to optically amplified NRZ systems and finally solitonic propagation. In each case recirculating loop techniques are deployed to simplify the transmission experiments. Advances in high speed electronics have allowed regenerators operating at 10 Gbit/s to become a practical reality. By augmenting such devices with optical amplifiers it is possibl

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28

Ma, Xiaobing. "Analysis and simulation of the Kerr effect in long haul in-line fiber amplifier transmission systems." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-171804/.

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29

Altuncu, Ahmet. "Distributed erbium doped fibre amplifiers (DEDFAs) for use in long haul and high bit rate soliton transmission systems." Thesis, University of Essex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388156.

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30

Gu, Xuanye. "Very long distance optical fibre transmission using coherent systems and optical amplifiers." Thesis, University of East London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334070.

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31

Ursini, Leonora. "Optical Chaotic Transmission Systems For Secure Data Communication." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3425929.

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The optical chaos dynamics are investigated for obtaining the secure transmission of an information message. A detailed numerical analysis of an optical chaotic transmission system, based on the synchronization of two chaotic lasers is presented. At the transmitter, the chaotic waveform is superposed on the information message; at the receiver, the message is recovered by subtracting the synchronized chaotic wave from the received signal. The aim is the investigation of the system performance for various configurations. Original methods are also proposed for improving the performance. Finall

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32

Cameron, John. "Polarization mode dispersion in optical fiber transmission systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ65453.pdf.

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33

Sousa, e. Castro Jorge Costa de. "Gain-lever lasers in optical subcarrier transmission systems." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314197.

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34

Leong, Miu Yoong. "Coherent Optical Transmission Systems : Performance and Coding Aspects." Doctoral thesis, KTH, Optik och Fotonik, OFO, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176637.

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Since the invention of fiber-optic systems in the 1970s, user demand has driven innovation forward, and each new generation of products has achieved higher data rates than its predecessor. Today, the most promising approach for further increasing data rates is coherent transmission with multi-level modulation and digital signal processing (DSP). By using multi-level modulation, data rates can be increased without increasing the spectral bandwidth of the signal. Digital signal processing has a highly-predictable design flow, and solutions are likely to become more attractive in the future as te

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35

LI, RIXIN. "mixed modulation format for future optical transmission systems." Doctoral thesis, Politecnico di Torino, 2016. http://hdl.handle.net/11583/2641453.

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Developing a flexible network to fully utilize the existing spectral resource is a hot topic in the novel paradigm of optical transmission systems. In this thesis, I analysed hybrid modulation formats as an effective technique for the implementation of flexible transponders that are capable of trading-off the delivered data rate by the light path quality of transmission with a finer granularity. The flexible transponder is an enabling technology to introduce the elastic paradigm in the state-of-the-art networks, while maintaining compatibility with the installed equipment, including fibers, mu

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36

Edirisinghe, Sumuda G. "Dispersion compensation techniques in high bit rate transmission systems." Thesis, University of Essex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343578.

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37

Okonkwo, Igweani Uchenna Titus. "Optical fiber transmission systems for in-door next generation broadband access network." Thesis, Brunel University, 2014. http://bura.brunel.ac.uk/handle/2438/10539.

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This thesis investigates the generation and radio-over-fibre (RoF) transport of unlicensed 60 GHz millimetre-wave (mm-wave) frequency band. The investigated benefits of transmission schemes applicable for the mm-wave generation include optical carrier suppression (OCS), optical frequency multiplication (OFM) and remote heterodyne detection (RHD). For the in-door cabling of the mm-wave transmission, a low-cost polymer optical fibre (POF) along with bend-insensitive single mode fibre (BI-SMF) has been investigated for short-range networks. Transporting mm-wave generated signals over POF and BI-S

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Sherif, M. "Decision point steering in optical fibre communication systems." Thesis, University of Kent, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233964.

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Tayebi, Niloufar. "Laser nonlinearity compensation for subcarrier multiplexed optical transmission systems." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7665.

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Subcarrier multiplexing efficiently uses the available fiber bandwidth in video transmission. Semiconductor lasers are usually used as optical transmitters in such systems. A semiconductor laser exhibits nonlinear characteristics. Nonlinearity degrades system performance. For nonlinearity compensation, a nonlinear predistortion block is assumed to be incorporated prior to the laser. Characteristics of this nonlinear block invert those of the laser. Performance of the subcarrier multiplexed system with and without predistortion is evaluated by harmonic distortion and intermodulation distortion

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Oliveira, Inês do Vale Marques. "Digital chromatic dispersion equalization in optical coherent transmission systems." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/21735.

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Mestrado em Engenharia Eletrónica e Telecomunicações<br>A crescente procura de largura de banda tem obrigado a área de comunicações óticas a explorar diferentes soluções, de forma a evitar a ”crise de capacidade” [1]. O investigadores têm trabalhado no sentido de atingir o equilíbrio entre os vários compromissos, repensando a forma como o sinal ótico é enviado e recebido, para que a perda de informação seja mínima ao longo do canal de propagação. No inıcio desta década, começaram a ser adotados formatos de modulação avançada, os quais apresentam elevada eficiência espetral, bem como deteção c

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41

Murray, Neil. "Advanced techniques for the improvement of optical transmission systems." Thesis, Aston University, 2014. http://publications.aston.ac.uk/23418/.

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This thesis presents the experimental investigation into two novel techniques which can be incorporated into current optical systems. These techniques have the capability to improve the performance of transmission and the recovery of the transmitted signal at the receiver. The experimental objectives are described and the results for each technique are presented in two sections: The first experimental section is on work related to Ultra-long Raman Fibre lasers (ULRFLs). The fibre lasers have become an important research topic in recent years due to the significant improvement they give over lu

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42

Detwiler, Thomas Frederick. "Continuous phase modulation for high speed fiber-optic links." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42867.

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Fiber-optic networks are continually evolving to accommodate the ever increasing data rates demanded by modern applications and devices. The current state-of-the art systems are being deployed with 100 Gb/s rates per wavelength while maintaining the 50 GHz channel spacing established for 10 Gb/s dense wavelength division multiplexed (DWDM) systems. Phase modulation formats (in particular quadrature phase shift keying - QPSK) are necessary to meet the spectral efficiency (SE) requirements of the application. The main challenge for phase modulated optical systems is fiber nonlinearities, where c

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43

Stojkovska, Biljana. "Optimal transmission investment strategies for sustainable power systems." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/9255.

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Maintaining security and reliability in the electricity supply is fundamental to the functioning of a modern society and drives the need for adequate transmission capacity for both market participants and customers. Planning the investment in transmission has always been a complicated undertaking due to the high development costs and long lead times. Furthermore, to anticipate the future needs of customers is a task as difficult as that of cost-effective planning and construction of new facilities. Trying to find treatments for some of these issues represents a major motivation for this thesis

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Zeraatzade, Mahbube. "Transmission congestion management by optimal placement of FACTS devices." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4710.

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This thesis describes the implementation of the Flexible AC Transmission Systems (FACTS) devices to develop a market-based approach to the problem of transmission congestion management in a Balancing Market. The causes, remedies and pricing methods of transmission congestion are briefly reviewed. Balancing Market exists in markets in which most of the trading is done via decentralized bilateral contracts. In these markets only final adjustments necessary to ensure secure system operation is carried out at a centralized Balancing Market. Each market player can participate in the Balancing Marke

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Tohme, Philip Edward. "Optical switching and its application in Sonet-based transmission systems." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-10242009-020314/.

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46

Prodaniuc, Cristian. "Advanced Signal Processing for Pulse-Amplitude Modulation Optical Transmission Systems." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/117315.

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[ES] Los sistemas de transmisión óptica no-coherente se emplean actualmente en las redes ópticas de corto alcance (< 80 km), como son las redes de ámbito metropolitano. La implementación más común en el estado del arte se basa en sistemas que emplean multiplexación por división en longitud de onda (WDM, wavelength division multiplexing) de cuatro longitudes de onda (¿) proporcionando un régimen binario de 100 Gbps (4¿×25 Gbps). En los últimos años, los sistemas de transmisión ópticos no-coherentes están evolucionando desde 100 Gbps a 400 Gbps (4¿×100 Gbps). Dado que este mercado comprende un g

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El, Shazli Abdalla. "The synchronization of time-slotted photonic star networks /." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99759.

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Photonics is a technology capable of supporting very high bit-rates of data. However, with the current state of photonic technologies logic and memory functions are very difficult to implement in the photonic domain. In photonic star networks using time division multiplexing (such as the Agile All Photonic Network), timeslots from the edges of the network have to arrive at the star point at exactly the same instant to be switched because they cannot be buffered in the photonic domain. The switching requires that the time at which the timeslots are transmitted must be coordinated and tightly co

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Kreikebaum, Frank Karl. "Control of transmission system power flows." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50392.

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Power flow (PF) control can increase the utilization of the transmission system and connect lower cost generation with load. While PF controllers have demonstrated the ability to realize dynamic PF control for more than 25 years, PF control has been sparsely implemented. This research re-examines PF control in light of the recent development of fractionally-rated PF controllers and the incremental power flow (IPF) control concept. IPF control is the transfer of an incremental quantity of power from a specified source bus to specified destination bus along a specified path without influenc

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James, Jonathan C. "Imaging systems based on the encoding of optical coherence functions." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/15607.

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Doubková, Veronika. "Bezpečnostní rizika podle standardu ISO 27001." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-412984.

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This diploma thesis deals with the management of security information, according to ISO/IEC 27005 and it is implementation in the Verinice software environment. The risk information management process is applied to a critical infrastructure, that is connected to a optical fiber network. The work focuses on incidents aimed at threatening data from optical threats and active network elements in transmission systems. The result of the work is defined as a risk file in the .VNA format containing identified risks, for which appropriate measures are implemented in connection with the requirements of

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