The goal of the Master's Thesis is to describe and analyze the current situation of the management system with regard to compliance of standard ČSN EN ISO 9001:2009 requirements at OFA Ltd. The result of the thesis will be used as basic information for implementation and subsequent certification of the quality management system at the company. The Master's Thesis contains improvement recommendations and suggestions oriented on quality management system at OFA Ltd. In the theoretical part is described the term quality and explain why quality is important nowadays. In that part are also mentioned some concrete quality management systems including the system of the international standard ISO 9001.

Disertační práce se zabývá optickým digitálně-analogovým převodníkem, jako alternativou optické části koncové vysílací jednotky (optický front-end) určené pro VLC (visible light communication) aplikace. Stěžejní část práce, která se věnuje numerickému modelování optického kanálu, prezentuje vliv bitové hloubky, topologie koncové části optického vysílače a geometrického uspořádání na přenášený signál. Součástí práce je návrh, realizace a ověření parametrů optického digitálně-analogového převodníku vycházející z předcházejících simulací. V poslední řadě práce obsahuje demonstraci vysokorychlostní optické komunikace s využitím navrženého VLC optického vysílače.

Diploma thesis focuses on the theoretical analysis of precise time and stable frequency transfer. It describes what time and frequency is, their properites and options of their generation. Next part deals with different possibilities of time and frequency transfer especially using fiber optics. In the practical part equipment for analysing effects of temperature changes on precise time transfer is puted into operation. Arduino platform is used for monitoring temperature changes on fiber. For testing of frequency stability in variable temperature conditions of environmental chamber device is created using highly coherent laser.

This thesis describes the problem of fiber gratings, focusing primarily on the use of Bragg's grids in the sensor. It describes the types of fiber mesh production, especially the method of writing with a phase mask. The next part deals with the possibilities of using apodization in fiber optic systems. It deals with the various functions that can be used to describe apodization. The following part describes the moire principle, especially the method of overlapping two phase masks with a different period.

This master's thesis deals with the measurement of soil temperature. In the theoretical part, optical fiber systems were explained, with a focus on DSTS systems and their use. In the practical part, a functional system was created to measure the soil temperature at depths of 0.1-1~m using the Arduino platform. Furthermore, the temperature measurement was demonstrated on the test polygon using the optical fiber of the FTB 2505 instrument in laboratories.

This diploma thesis deals with the issue of measuring the ambient temperature using a~single-mode optical fiber used as a temperature sensor. The thesis describes the basic knowledge about polarized light, its propagation in optical fiber and describes special fibers that preserve polarization. It also deals with the representation of polarization states on a Poincaré sphere and the use of Stokes and Jones vectors. In the practical part, several selected methods of optical signal supply to the temperature sensor are measured. Subsequently, the suitability of the given methods is evaluated from the measured results and the courses are compared with the records measured from real routes. This thesis aims to select a suitable connection of a temperature sensor for a long route of optical fiber and verify its functionality.

This diploma thesis deals with creation of a measuring application using optical sensor and robotic arm in the RobotStudio software. The literature review of the thesis describes the field of optical measuring and calibration. Furthermore, the thesis includes the process of creating a measuring application and outlining issue of calibration of individual parts. The work is supplemented by a demonstration of repeatability measurements and a description of possible errors that may occur if the robot is set incorrectly.

Master's thesis treat of optical connection. The aim of this work was also the practical implementation and successful testing. Communications signal is low frequency in the range of 20 to 15 kHz and intended length of the coupling is approximately 200 m. The first is the work carried out theoretical analysis issues. Then is described the design and implementation of its own facility. In conclusion, the measurement is done and evaluate the parameters. I have dealt the optical connection with using a laser beam that is modulated frequency modulation. This optical signal is converted in the receiver using a PIN photodiode (type PIN) back to the electrical signal. Then there is the demodulation and amplification. The frequency modulator and demodulator is phase lock loop. It realizes the type of circuit CMOS 4046. The work is designed properly functioning equipment. It serves for the transmission of speech and audio signal line. It has good properties that match the criteria. The connection can be used outdoors due to the use of cover. The scope of communication may be even greater than 200 meters

Moderní elektronika se stává nezbytnou součástí dnešních automobilů. Dynamicky se rozvíjející informační a telematické služby nacházejí široké uplatnění v automobilovém prostředí. Moderní aplikace vyžadují přenos velkého množství dat, což jim zajišťují dnešní komunikační protokoly. Cílem mé diplomové práce je analýza a návrh implementace multimediálních sítí do automobilů. Jednotlivé návrhy jsou charakterizovány a srovnány podle požadavků, kterým jsou v automobilovém prostředí vystaveny. Navržené topologie využívají nejen dnes používané technologie, ale jsou zde i návrhy, které nebyly dosud v automobilovém prostředí použity. Jednotlivé návrhy jsou srovnány a vyhodnoceny z pohledu automobilového výrobce.

This master thesis deals with design and construction of device for optic biosensor. The device are using for detected halogen compound in the water. For excitation testing sample is used LED diode about wave length 590 nm. Photocounter is used for detection of the emitted light after fluorescence Such as fluorescent marker are 5(6)-carboxynaphthofluorescein. The thesis is divided into three head parts. The first part includes the theory needed for realization; the second part takes in detail description of the construction and function of the device and the last part describes measurements with the device.