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Optical fiber polygon for testing of services
Frolka, Jan ; Horváth, Tomáš (referee) ; Dejdar, Petr (advisor)
Bachelor’s thesis describes the types of optical fibers, their structures and properties. The basic parameters of optical fibers and standards for single-mode fibers are defined. The differences between the various connectors and the polishing of the ferrules are also described. The next section describes the multichannel transmission technology and its modifications, as well as the FFTx technology. In the next part, the work deals with measurements on optical fibers, the most common measurement methods are listed. The reader will learn what to do and also what not to do when manipulating with optical elements. The attached diagrams show the test polygon, as well as the measured and calculated values of the attenuation of its parts.
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Random number generator using wireless networks
Frolka, Jan ; Dvořák, Jan (referee) ; Člupek, Vlastimil (advisor)
This master's thesis introduces the reader to the types of random number generators and the possibilities of their implementation. The methods of testing random numbers and different types of statistical test sets are described. The thesis includes the design and implementation of a custom random number generator using wireless networks. The value of the signal strength multiplied by the difference in time since the previous packet was received is used as the source of randomness. The generator is controlled by a web application that allows the user to generate, store and test random numbers using the NIST STS test suite. The generated sequences from the generator were further tested using the ENT suite. The results are further compared with the generator using atmospheric noise from the website.
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Optical fiber polygon for testing of services
Frolka, Jan ; Horváth, Tomáš (referee) ; Dejdar, Petr (advisor)
Bachelor’s thesis describes the types of optical fibers, their structures and properties. The basic parameters of optical fibers and standards for single-mode fibers are defined. The differences between the various connectors and the polishing of the ferrules are also described. The next section describes the multichannel transmission technology and its modifications, as well as the FFTx technology. In the next part, the work deals with measurements on optical fibers, the most common measurement methods are listed. The reader will learn what to do and also what not to do when manipulating with optical elements. The attached diagrams show the test polygon, as well as the measured and calculated values of the attenuation of its parts.
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