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100G passive optical network
Sporni, Alex ; Tomašov, Adrián (referee) ; Horváth, Tomáš (advisor)
This diploma thesis deals with the current state of development of passive optical networks, with the main emphasis on high-speed passive optical networks of 50 Gb/s and higher. The opening part of the thesis provides a theoretical introduction to optical access networks, their division, elements of passive optical networks and the subsequent analysis of the latest standards. As part of the implementation, simulation topologies for various simulation scenarios are designed in the VPIphotonics Transmission Maker tool. The proposed simulations are properly evaluated in the next chapter. The quality of the proposed simulation topology is assessed using bit/symbol error rate and in some cases in combination with an eye diagram (quality factor). The output of the work are simulation scenarios for various configurations and modulation formats of the proposed optical networks. The output of the work is also a laboratory task, which will be used for teaching purposes.
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High speed (100G) access networks
Chlápek, Jan ; Münster, Petr (referee) ; Horváth, Tomáš (advisor)
This paper was focused on describing the development, parameters and needs for High-bandwidth access networks. The introductory part of the theoretical analysis is devoted to a basic description of optical access networks. Next the attention is aimed at comparing PON standards of organizations ITU-T and IEEE. Main segment of the theoretical analysis is focused on describing the next generation PON development where there were analyzed standards NG-PON2 and 100G EPON that are currently in development. The practical task was focused on application of gained information about PON by creating a simulation of XG-PON access network. Goal of this simulation was an analysis of downstream transmission in terms of network quality and BER.
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Partial renovation of metropolitan optical network infrastructure
Cichra, Petr ; Lávička Otakar, Mgr., MU, https://is.muni.cz/osoba?prezdivka=xlavick1 (referee) ; Novotný, Vít (advisor)
This bachelor thesis is focused on rebuilding of active metallic-optical network in locality Brno – Zábrdovice, in the streets Šámalova, Kuldova a Krokova on purely passive optical network based on xPON technology with possibility of further expansion of capacity. The partial goal is a thorough analysis of the current state and the main proposal is the solution of modernization of the existing network infrastructure into xPON and then implement this proposal. The theoretical part of the bachelor thesis describes the problems associated with these technologies with regard to current and future trends in the construction of optical networks. Furthermore, the economic intensity of the investment in this reconstruction will be evaluated.
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Quality of Services in Optical Access Networks
Šifta, Radim ; Křepelka, Václav (referee) ; Vlček, Čestmír (referee) ; Filka, Miloslav (advisor)
The thesis focuses on the optical access networks and deals with the issue of transmission parameters of the physical layer, their negative impact on the quality of the services parameters and the possibilities of reducing their effect using the polarization multiplexing. The first and second chapter describe the theoretical background necessary for understanding the subsequent parts. The third chapter contains the practical part of the thesis. At first the optical routes in the Czech Republic in terms of polarization mode dispersion, which is together with insertion loss the main limiting parameter of high-speed optical networks, are evaluated. In the following part the measuring of the temperature changes effects on the polarization mode dispersion of the passive components and the effect of temperature changes to the polarization multiplexed signal are evaluated. To double the bandwidth and reduce the influence of polarization mode dispersion on the quality of services, the two simulation models of optical access networks using polarization multiplexing were carried out. These theoretical outputs were verified by the practical measurements in the laboratory and subsequently on the real optical route. Finally, a draft of the broadband optical access network based on wavelength and polarization multiplexing was designed based on obtained knowledge.
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Influence of Dynamic Bandwidth Allocation over Optical Network Unit
Sikora, Pavel ; Oujezský, Václav (referee) ; Horváth, Tomáš (advisor)
This thesis deals with DBA algorithms used in XG-PON networks. It describes reference appearance of the DBA algorithm, as well as, three specific DBA algorithms discussed in professional articles. Particularly speaking about GIANT, HYRA and modified Max-Min Fair DBA. The thesis provides description of frames utilized by DBA algorithms in XG-PON networks, specifically XGEM frame and XGTC frames. The thesis also presents a simulation tester of DBA algorithms tested on a virtual XG-PON network. Finally, it contains the results of testing these DBA algorithms with a description.
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Simulation of high-speed optical data transmissions
Chaloupka, Tomáš ; Münster, Petr (referee) ; Horváth, Tomáš (advisor)
The aim of this master thesis is comparation of simulation tools OptSim™ and PHOTOSS which are used to create simulations of data traffi cs in access and metropolitan networks. The outcome of this thesis is three laboratory exercises and their theoretical bases which should explain the way of working in diff erent simulation environments to students.
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The data transfer technologies in optical access networks (FTTx)
Matušík, Lukáš ; Míča, Ivan (referee) ; Reichert, Pavel (advisor)
The objective of diploma thesis is describe problems connected with designed of FTTX networks and bring the reader problems of data transmission in optical acces networks the type of PON. In the introduction are mentinoned individual technologies that already operate, and there are describe advantages disadvantages of the use topology point-to-point and point-to-multipoint. In the following chapters are dealt with problems with data broadcasting in the direction from final participant. In the other part of diploma thesis are described elements, that were used for the proposed transmission route. The own PON acces network was presented on the basis information obtained by comparing the various networks and the elements involved in them. The network presented in conclusion diploma thesis is involved in topology point to multipoint. This transmission route is simulated in the program that allows the involvement of network by the user’s need with real values. The acces network is simulated for different transmission speed and different distances. The assesment of created optical route results from the measured values, theirs source is program OptiSystem, these values are summarized in the final chapter.
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Laboratory exercise: Modeling of photonic communication networks
Kovaříková, Hana ; Horváth, Tomáš (referee) ; Münster, Petr (advisor)
The bachelor’s thesis deals with the issue of modern high-speed data networks and their simulation in the MATLAB Simulink environment. The theoretical part is devoted to optical networks, fibers, their properties and standards. The thesis also explains the subject of passive and active optical networks, including their components. Laboratory tasks are devoted to the simulation of the transmission of a passive optical network with a splitter and an active optical network with an amplifier.
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100G passive optical network
Sporni, Alex ; Tomašov, Adrián (referee) ; Horváth, Tomáš (advisor)
This diploma thesis deals with the current state of development of passive optical networks, with the main emphasis on high-speed passive optical networks of 50 Gb/s and higher. The opening part of the thesis provides a theoretical introduction to optical access networks, their division, elements of passive optical networks and the subsequent analysis of the latest standards. As part of the implementation, simulation topologies for various simulation scenarios are designed in the VPIphotonics Transmission Maker tool. The proposed simulations are properly evaluated in the next chapter. The quality of the proposed simulation topology is assessed using bit/symbol error rate and in some cases in combination with an eye diagram (quality factor). The output of the work are simulation scenarios for various configurations and modulation formats of the proposed optical networks. The output of the work is also a laboratory task, which will be used for teaching purposes.
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Graphic User Interface For Pasive Optical Network Configuration
Kováč, Dávid
This paper presents a Graphic user interface for the configuration of the optical line terminalin passive optical networks. The aim of the GUI is to create an app that makes the configurationof the OLT easier. The GUI connects to the OLT with the Secure Shell protocol. The GUI notonly allows the configuration of the OLT but also has the ability to show the status of the connectedoptical network units and show the activity on the OLT.
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