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Simulation of fiber-optic components for fiber optic sensors
Jakoubek, Petr ; Urban, František (referee) ; Čučka, Milan (advisor)
This diploma thesis describes the function of commonly used elements among optical network, with an emphasis on fiber optic sensors. The basics of optical transmission and types of fibers are described, in addition to active and passive optical components, optical splitters and couplers. Optical fiber sensors are divided in two groups: intrinsic and extrinsic. Interferometric types of sensors are described in detail. The thesis compares theoretical assumptions and practical measurements of two serially-connected couplers. A~new module fulfilling real optical coupler function was made using Matlab. This module can be implemented into the VPIphotonics library. Finally, interferometric function of two serially-connected couplers was tested.
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Pupil`s preconceptions in geometrical optics
Zedník, Michal ; Kolářová, Růžena (referee) ; Mandíková, Dana (advisor)
I was concerned with the preconceptions of the pupils in the area of geometric optics in my diploma work. I did the research among the pupils of grammar schools and multi-annual secondary schools. The used test contained ten questions. My choice of the questions was based on the researches concerning the misconceptions in optics that have been already done. I also mention the survey of these researches in my diploma work. I compiled the summary of the textbooks that are used at grammar schools and in the lower degrees of secondary schools in the next part. These textbooks are focused on the topics contained in the questions of the test. The survey of the testing results creates main part of my diploma work. I tested before and after the teaching of optics 162 pupils from eight classes of grammar schools and multi-annual secondary schools took part in the investigation. The table with the most frequent misconceptions that were ascertained during the testing is part of this survey. I devoted to the differences in the results between the pupils from grammar schools and multi-annual secondary schools and also the differences in the results of boys and girls.
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Comparison of old and current cine lenses in combination with modern digital camera
Jakubec, František ; HOJDA, Petr (advisor) ; MIKŠ, Antonín (referee)
A Director of Photography has many artistic possibilities when working with cine lenses. Today, we can produce many optical effects in digital post-productions; however, working with lenses and with their defects (aberrations) is very interesting when you use them with modern recording technology. This thesis examines a small part of these issues. The theoretical part is about general qualities of optical systems, their aberrations, and measurement of picture quality. Furthermore, there is also a description of the movie camera and lenses, which were used for testing. The analytical part is about analyzing real footage from tests.
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Detached house with an opticians in Ružomberok
Dvorská, Dominika ; Vlach, František (referee) ; Štěpánek, Ladislav (advisor)
This bachelor´s thesis deals with a design of a detached house with an opticians in Ružomberok. The object has a partial basement. On the first floor there is a shop with glasses , this place has an accessible entrance. The first floor has also common areas for the occupants of the house, including a garage for two cars. On the second and third floor two apartments for three-four member family are situated. The third floor is designed as an attic. The roof of the house is a gabled one.
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Pulsed driver for laser diodes
Pernica, Lukáš ; Křepelka, Pavel (referee) ; Drexler, Petr (advisor)
This semestral thesis describes creation of laser radiation in the semiconductor material, the structure of the laser diode and the possibility of using power laser diodes in pulsed mode with high switching frequencies. In the thesis are described methods of casing of power laser diodes and their cooling possibilities and solutions to their switching, evaluating the pros and cons of these solutions and select the most suitable one for the best completion of all requirements.
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Database system for optometrician shops
Dlouhý, Lukáš ; Borská, Eva (referee) ; Kříž, Jiří (advisor)
This thesis deals with creating a suitable database system for an specific existing company that manufactures and sells glasses. The thesis focuses on describing the development of the database system in SQL, HTML, PHP and also on the structuring of the database. It aims to create a database system, which will comply with the company's requirements.
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A Brief Design of Optical Resonators
Hubík, Daniel ; Nešpor, Dušan (referee) ; Kadlec, Radim (advisor)
This bachelor thesis is focused on analysis of split-ring resonators in THz region. Simulations were made by finite elements method and by finite-difference time-domain method. At first we created a resonating structure that works in GHz region. Then we were observing a dependence of movement of resonant frequency on the size of resonator. In the final chapter we assigned frequency dependent values of permitivity to such structure. As the result we simulated working resonator at frequency 500THz. All simulations have been made in program HFSS ANSYS and Lumerical FDTD Solutions.
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Design and Construction of Device for Skin Optical Capturing
Doleželová, Lenka ; Smolík, Luděk (referee) ; Drahanský, Martin (advisor)
This bachelor's thesis deals with creation and testing of device for biometric liveness detection research facilitation. Initially it was necessary to design and construct a hardware device for acquirement of skin pictures illuminated by a light of specific wavelength. The second part of this work was to design and to develop a software application for processing of the acquired pictures. Subsequently the scannning of group of volunteers was done in order to acquire a sufficient amount of skin pictures for volunteer-profile creating by an implemented software application. Text of this thesis describes a design and construction of all necessary hardware parts, design and implementation of software application and the process and results of testing both hardware and software parts.
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Basic Optical Elements 2D Raytracing
Danczi, Dávid ; Havel, Jiří (referee) ; Seeman, Michal (advisor)
This bachelor's thesis describes analysis, design and implementation of an application, which simulates the method of ray tracing through simple optical elements. Further it examines the issue of computer graphics and description of the Windows API programming interface.
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Laser diode driver
Pučálka, Jan ; Látal, Jan (referee) ; Diblík, Jan (advisor)
The thesis describes the function and an energizer fount design for a laser diode.The main aim was to be familiarized with the requirements for the laser diode construction and to realize the equipment which enables an intensive modulation of a radiated cluster accompanied with a dynamics at least 80% of a maximum radiated output. The introduction of the thesis is focused on the issue of the primary features and elementary ideas concerning the matter of the laser. Moreover the types, infiltration application and the essential laser diode wiring are defined.The conclusion of the thesis is concentrated on the energizer fount linkage for the laser diode.
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