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Dispersion measurements of optical transmissions.
Motúz, Rastislav ; Urban, František (referee) ; Filka, Miloslav (advisor)
This thesis firstly theoretically describes phenomena which appear in optical fiber transmission. The theoretical part of the thesis deals with linear and non-linear phenomena, and later on proceeds to dispersions with a more significant effect on the optical transmission quality. It puts polarization to the centre of the phenomenon called Polarization mode dispersion (PMD), which is the main object of our interest. It leads to a deep PMD description from the point of view of polarization states, limit values, compensation methods, and methods of measurement. The practical part of this thesis deals with a draft of PMD measurement via Fixed Analyzer method. For the purposes of this measurement, we used the optical spectral analyzer MS9740A. In order to compare measured values, the proposed idea then proceeds to the reference measurement by using a modular platform EXFO FTB--200 in combination with CD/PMD module EXFO FTB-5700. Results of measurements have been evaluated for the limit values defined by the standard. In the last chapter of this thesis, the reference measurements are compared to the Fixed Analyzer method. All the advantages and disadvantages of individual measurement methods are identified at the end of this chapter too.
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Elaboration of quality manual for aqua-chemical laboratories
Hrubá, Lucie ; Čáslavský, Josef (referee) ; Vávrová, Milada (advisor)
The thesis is oriented on working-out of the quality manual for hydrochemical laboratory conformable with standards ISO 9000 and 16000. The quality manual describes principles and working processes for utilisation in standard audited and accredited hydrochemical laboratory. It is focused on management system of quality created in laboratory in conformity with standard ČSN EN ISO 9001. It presents basic information about politics and goals of laboratory´s quality. In the practical part of the thesis, there are reviews of various Standards operation procedure, which are components of the Quality Manual.
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Development in 3D Packaging for Modern Electronics Systems
Prikryl, Petr ; Švecová, Olga (referee) ; Szendiuch, Ivan (advisor)
The aim of this diploma thesis is 3D package design study and elaboration of rules for effective thermal and electrical design. There are recommendations and equations for calculating parameters affecting design of modern SOP and SIP packages mentioned in this thesis. Advantages of modern technologies in thermal management of packages are demonstrated in the second part of thesis using ANSYS workbench.
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Utilization and Suppression of Birefringence Phenomena in Optical Fiber Sensory Applications
Motúz, Rastislav ; Hudcová, Lucie (referee) ; Vlček, Čestmír (referee) ; Drexler, Petr (advisor)
The thesis deals with integral and distributed optical fiber sensors of electric current. In the area of integral sensors the analysis is performed by Jones matrix calculus and the simultaneous influence of induced circular and undesired linear birefringence using an ortho-conjugation retroreflector. Furthermore, the proposed conjugation loop variant using half-wave phase retarders is analyzed. The theoretical conclusions are confirmed by simulation and experimental measurement. In the field of distributed fiber optic sensors, analysis and simulation for the detection of plasma currents in thermonuclear fusion reactors, based on the POTDR technique, is performed. An improvement procedure is proposed for circular-shaped vacuum vessel reactors. Plasma current detection procedure in divertor-type reactors have been newly designed and simulated to investigate the effect of the OTDR detector noise on plasma current detection accuracy.
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Advancing Packiging and 3D systems
Nicák, Michal ; Šandera, Josef (referee) ; Szendiuch, Ivan (advisor)
This project consists of three parts. The first part is aimed to summarize list of actual packaging systems and especially systems using 3D construction. Project continues in the second part, which is more practical and contains design and production of organic and inorganic testing substrates for lead-free soldered 3D structures. Last experimental part is about tests performed on soldered substrates and evaluation of results of these practical tests.
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Quality system management and its application in environmental analysis
Holoubek, Vladimír ; Doležalová Weissmannová, Helena (referee) ; Vávrová, Milada (advisor)
This thesis has a theoretical character. The first part consists of quality manual for a small fictive laboratory concerned with environmental analysis and collection of soil samples. Quality manual is made in accordance with ISO 17025. In second practical part of thesis the Standard operating procedures are designed for specific environmental analysis. These analyses are performed within the frame of subject Practice of Environmental analysis. Standard operating procedures will be virtually used in the university laboratory of environmental analysis.
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EU Common Commercial Policy's Perception by Ghana - based Businesses
Ago, Enoch Kpakpo
ABSTRACT Ago, E.K. EU Common Commercial Policy’s Perception by Ghana- Based Businesses. Diploma thesis; Brno: Mendel University, Brno , 2019 This diploma thesis covers extensive investigations into the existing EU-Ghana bilateral trade, and provides recommendations instructive for top managerial decision making regarding how best trade ties between the two organizations will be tightened and ensure effective trade relations. The thesis provides deep insights information that is vital for Ghanaian companies on the EU common commercial policies and the 2016 stepping stone Economic Partnership Agreement. Analyses were based on qualitative and quantitative approaches on general perception by Ghanaian companies about the European Union Economic Partnership Agreement and commercial policy. The questionnaire data has shown that most companies in Ghana are willing to transact business with the EU within a favourable framework of trade. Keywords: CCP, Economic Partnership Agreement, EU, Ghana - Based Companies, Stepping Stone
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Utilization and Suppression of Birefringence Phenomena in Optical Fiber Sensory Applications
Motúz, Rastislav ; Hudcová, Lucie (referee) ; Vlček, Čestmír (referee) ; Drexler, Petr (advisor)
The thesis deals with integral and distributed optical fiber sensors of electric current. In the area of integral sensors the analysis is performed by Jones matrix calculus and the simultaneous influence of induced circular and undesired linear birefringence using an ortho-conjugation retroreflector. Furthermore, the proposed conjugation loop variant using half-wave phase retarders is analyzed. The theoretical conclusions are confirmed by simulation and experimental measurement. In the field of distributed fiber optic sensors, analysis and simulation for the detection of plasma currents in thermonuclear fusion reactors, based on the POTDR technique, is performed. An improvement procedure is proposed for circular-shaped vacuum vessel reactors. Plasma current detection procedure in divertor-type reactors have been newly designed and simulated to investigate the effect of the OTDR detector noise on plasma current detection accuracy.
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Dispersion measurements of optical transmissions.
Motúz, Rastislav ; Urban, František (referee) ; Filka, Miloslav (advisor)
This thesis firstly theoretically describes phenomena which appear in optical fiber transmission. The theoretical part of the thesis deals with linear and non-linear phenomena, and later on proceeds to dispersions with a more significant effect on the optical transmission quality. It puts polarization to the centre of the phenomenon called Polarization mode dispersion (PMD), which is the main object of our interest. It leads to a deep PMD description from the point of view of polarization states, limit values, compensation methods, and methods of measurement. The practical part of this thesis deals with a draft of PMD measurement via Fixed Analyzer method. For the purposes of this measurement, we used the optical spectral analyzer MS9740A. In order to compare measured values, the proposed idea then proceeds to the reference measurement by using a modular platform EXFO FTB--200 in combination with CD/PMD module EXFO FTB-5700. Results of measurements have been evaluated for the limit values defined by the standard. In the last chapter of this thesis, the reference measurements are compared to the Fixed Analyzer method. All the advantages and disadvantages of individual measurement methods are identified at the end of this chapter too.
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