20.500.12556/RUL-155375 Optični vlakenski interferometer za zaznavanje spremembe temperature Optical fiber interferometer for measuring temperature shifts Delo se osredotoča na meritve sprememb lomnega količnika zaradi segrevanja medija kot posledica absorpcije svetlobe v nečistočah. Motivacija za magistrsko delo je merjenje koncentracije delcev črnega ogljika in aerosolov v zraku. Podoben pristop lahko uporabimo tudi za meritve nečistoč v drugih medijih, na primer v vodi. V nalogi smo zasnovali eksperimentalno postavitev optičnega vlakenskega Mach-Zehnder interferometra. Pokazali smo, da z zasnovano eksperimentalno postavitvijo zaznamo spremembe v razdalji optične poti, ki so lahko posledica spremembe temperature ali pomika v merilni veji interferometra. Prav tako smo zasnovali eksperimentalno postavitev, ki poleg optičnega vlakenskega interferometra vsebuje črpalni laser, s katerim segrevamo vodo v merilni veji interferometra. Pokazali smo, da je takšna zasnova eksperimentalne postavitve primerna za zaznavo spremembe lomnega količnika zaradi temperaturne spremembe vode. This work focuses on measurements of refractive index changes due to temperature shifts of the medium, which occur because of particles absorbing light. The main motivation for the master’s thesis is measuring the concentration of black carbon particles and other aerosols. The same approach can also be used with other media, such as water. In the thesis we designed an experimental optical-fiber Mach-Zehnder interferometer. We have shown that it can be used to detect changes of the optical path, which can happen due to temperature shifts. We improved the setup by adding an additional pump laser, with which we heat the water in the measuring branch of the interferometer. With this improvement we have shown that we are able to detect changes in the refractive index of the water, which happen because of temperature shifts. optična vlakna interferometer Mach-Zehnder črni ogljik absorpcija temperaturne spremembe optical fibers interferometer Mach-Zehnder black carbon particles absorption temperature shifts true false false [K. Nemanič] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2024-03-28 08:30:54 2024-03-28 08:30:57 2024-04-02 11:05:35 0000-00-00 00:00:00 2024 0 Ljubljana 0 XX, 58 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 535:621.3.017:667.521.4(043.2) 260034 191056387 32968.pdf 32968.pdf 1 7F85CA60F6B192CA51BFDE3865C14F04 ae3a9f27a85095ab077dc7c55f328ba21effcdb2a824546707c57fdf08070ad0 1e15a584-ecd5-11ee-a8ca-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182228 Fakulteta za strojništvo 0 0 0