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Quantification of turbulence by the Equivalent Temperature Gradient
Kovaľová, Alžbeta ; Látal,, Jan (referee) ; Hudcová, Lucie (advisor)
The diploma thesis is focused on the optical beam propagating in the atmosphere in a wireless communication optical link. The first part of the work explains the atmospheric transmission media with turbulence and its effects on reliability of the optical system. The second part introduces methods for turbulence determination based on a statistical approach to turbulence quantification are introduced. In the third part, method of equivalent temperature gradient is described with the advantage of immediate turbulence evaluation. The output of this thesis is the model of turbulent environment formed by the optical elements. Analysis of turbulent properties and non-reciprocal nature of turbulent channel is processed by a 2D simulator based on the mentioned model and method of equivalent temperature gradient.
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Laser coupling system
Dell, Roman ; Wilfert, Otakar (referee) ; Barcík, Peter (advisor)
This bachelor's thesis deals with the usage of a tunable pulsed laser for coupling to a single-mode fiber. At first, the thesis explains the principle of laser functioning, its basic technical components, properties of laser radiation and main types of tunable pulsed lasers. Next, it describes main types of optical fibres, their key properties and the methods for laser to fibre coupling. Finally, the thesis explains the basic concepts of matrix optics, its application to the Gaussian beam transformation and the calculation of coupling efficiency.
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Quantification of turbulence by the Equivalent Temperature Gradient
Kovaľová, Alžbeta ; Látal,, Jan (referee) ; Hudcová, Lucie (advisor)
The diploma thesis is focused on the optical beam propagating in the atmosphere in a wireless communication optical link. The first part of the work explains the atmospheric transmission media with turbulence and its effects on reliability of the optical system. The second part introduces methods for turbulence determination based on a statistical approach to turbulence quantification are introduced. In the third part, method of equivalent temperature gradient is described with the advantage of immediate turbulence evaluation. The output of this thesis is the model of turbulent environment formed by the optical elements. Analysis of turbulent properties and non-reciprocal nature of turbulent channel is processed by a 2D simulator based on the mentioned model and method of equivalent temperature gradient.
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Laser coupling system
Dell, Roman ; Wilfert, Otakar (referee) ; Barcík, Peter (advisor)
This bachelor's thesis deals with the usage of a tunable pulsed laser for coupling to a single-mode fiber. At first, the thesis explains the principle of laser functioning, its basic technical components, properties of laser radiation and main types of tunable pulsed lasers. Next, it describes main types of optical fibres, their key properties and the methods for laser to fibre coupling. Finally, the thesis explains the basic concepts of matrix optics, its application to the Gaussian beam transformation and the calculation of coupling efficiency.
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Laser coupling system
Dell, Roman ; Wilfert, Otakar (referee) ; Barcík, Peter (advisor)
This bachelor's thesis deals with the usage of a tunable pulsed laser for coupling to a single-mode fiber. At first, the thesis explains the principle of laser functioning, its basic technical components, properties of laser radiation and main types of tunable pulsed lasers. Next, it describes main types of optical fibres, their key properties and the methods for laser to fibre coupling. Finally, the thesis explains the basic concepts of matrix optics, its application to the Gaussian beam transformation and the calculation of coupling efficiency.
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