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Free-Space Optics data link
Šála, Jakub ; Číž, Radim (referee) ; Šporik, Jan (advisor)
In this thesis, shows a current issue for free space optics, limiting their use in practice with regard to the availability and reliability. They conducted measurements on wireless optical links and the observed values is calculated by the availability of the connection. Subsequently, measurements are performed on alternate versions of wireless and copper connections. Observed values were compared with a wireless optical link. It is made of optical design of wireless connections at home.
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Technology of translucent architectural concrete
Adámková, Aneta ; Novosad,, Petr (referee) ; Hela, Rudolf (advisor)
The bachelor thesis deals with problems of light transmitting concrete. The aim was to design a process for the production of light transmitting concrete. The theoretical part was compiled from foreign knowledge, which led to an assessment of the availability and price of optical fibers in the Czech Republic. The experimental part deals with the issues of different types of anchores in production and the selection of adequate diametr of the optical fiber from the three tested diameters. In the conclusion are the findings that led to the design of the production proces that is also described.
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Influence of optical connectors and of other effects on optical link attenuation
Winkler, Aleš ; Křepelka, Václav (referee) ; Filka, Miloslav (advisor)
In this time the metalic wires meet not the requirements of high capacitance and rate wire and so the new, modern fiber wires are more and more being used. This bachelor`s thesis deals with three basic kinds of connections of fiber wires, optical connector, mechanical coupling a optical weld, and their effect on optical link attenuation realized by fiber optics. The optical link is possible realized number of kinds fiber optics. In this thesis are most often used multimod and a little multimod fiber optics. By mechanical coupling are explored their effects of attenuation on optical link a their detrition after disconnection and next connection back to the optical line. For optical weld is explored quality assignet optic welder. For optical connectors is explored their quality of cleanness through apparatus OTDR( Optical Time Domain Reflectometer) and geometrical properties through apparatus FIBO 250.
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Optical Fiber Output Power Temperature Sensor Measuring Optimization
Koláčková, Aneta ; Grenar, David (referee) ; Filka, Miloslav (advisor)
This bachelor thesis deals with the issue of measuring optic power on the output of single mode fiber, used like temperature sensor, using birefringent. Thesis describes the basic knowledge about measuring power, standards and function of optical power meters. It also deals with polarization and representation polarization states using the Poincare sphere. In the practical portion is measured optic power on the output of the temperature sensor with a photodiod and after that is verifed by a polarimeter. The aim of this thesis is miniaturization of ending device for measuring intensity of light, that means replacing expensive and large polarimeter by cheap and small photodiod.
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Use of optical fiber as a temperature sensor
Procházka, Jakub ; Škorpil, Vladislav (referee) ; Filka, Miloslav (advisor)
This diploma thesis is focused on use of polarization mode dispersion for measurement of temperature. It also deals with representation of polarization mode dispersion in Poincaré sphere and a mathematical description of polarization mode dispersion by using Stokes and Jones vectors. Here are described basic alternatives of settings, selected temperature relationships and dependence and relationship between coherency and polarization. The practical portion of the diploma thesis examines behavior of the temperature sensor at different temperatures for wavelength 1550 nm and 633 nm.
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Effect of optical connectors quality on transmission
Bernkopf, Miroslav ; Křepelka, Václav (referee) ; Filka, Miloslav (advisor)
This diploma thesis deals with optic fiber connectors and their influence on transmissions realized via fiber optics. Optical fibers and lightguides play the key role in telecommunications because of constant demands of higher bandwidth and data rates. Original metalic wires do not meet market requirements and so the fiber optics are more and more being used. There are various types of fibers and there are also many ways of connections. This work deals with demountable way of connection – optical connectors, which have the biggest influence on a total attenuation and route length. Connector has to meet various requirements such as cleannes, quality, mechanical construction and ferrule polishing.
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Transmitting television signal via fiber optics
Abbasi, Farhad ; Vojtěch, Josef (referee) ; Münster, Petr (advisor)
Hlavním cílem této práce je teoretická analýza přenosového DVB TV signálu prostřednictvím optických vláken, analýza sítě CATV a modulační techniky pro její přenos. První částí této práce je zavedení šíření signálů v optických vláknech a pasivních součástech optických sítí, následované obecnými informacemi o digitálním rozhlasovém vysílání, sítí CATV a modulačním formátu pro jejich přenos. V druhé části, která se nazývá praktická část, vysvětluje výsledek měření, který se skládá ze srovnání různých měřicích parametrů, jako jsou "Power SIGNAL", "C / N", "Kanálový výkon" pro rozdílné délky optických vláken.
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Structured cabling system design for hotel
Novák, Lukáš ; Jordán, Vilém (referee) ; Sedlák, Petr (advisor)
This thesis deals with a proposal of structured cabling in a business object of Pentagon Hotel. The proposal addresses the use of horizontal and backbone infrastructure of the building using both metallic and fiber wires. The proposal does not deal with active parts of the network, it addresses just their recommended connection. The thesis also deals with the financial aspect of the proposal in the form of a complete budget.
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Distributed acoustic sensing system data analysis applied for perimeter protection
Senčák, Jakub ; Dejdar, Petr (referee) ; Tomašov, Adrián (advisor)
Táto práca sa zameriava na snímanie optických vlákien pomocou distribuovaného akustického snímania. Cieľom bolo vytvoriť multiplatformovú aplikáciu na vizualizáciu údajov získaných zariadení Optasense ODH-F. Táto práca bola motivovaná nedostatkom aplikácií s otvoreným zdrojovým kódom na vizualizáciu pre snímanie pomocou optických vlákien. Práca vysvetľuje distribuované akustické snímanie a efekty rozptylu svetla, ako je Rayleighov, Ramanov a Mandelsamov-Brillouinov rozptyl. Výsledkom práce je webová aplikácia. Aplikácia sa skladá z dvoch hlavných častí - server napísaný v jazyku Python a klientská časť implementovaná vo frameworku Svelte. Výsledky tejto práce možno použiť ako základ pre vytvorenie vizualizačného softvéru pre distribuované akustické snímanie.
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Technology of translucent architectural concrete
Adámková, Aneta ; Novosad,, Petr (referee) ; Hela, Rudolf (advisor)
The bachelor thesis deals with problems of light transmitting concrete. The aim was to design a process for the production of light transmitting concrete. The theoretical part was compiled from foreign knowledge, which led to an assessment of the availability and price of optical fibers in the Czech Republic. The experimental part deals with the issues of different types of anchores in production and the selection of adequate diametr of the optical fiber from the three tested diameters. In the conclusion are the findings that led to the design of the production proces that is also described.
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