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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Metoda merenja talasne dužine monohromatske svetlosti primenom spektralno osetljivih optičkih komponenti / Method of measuring monochromatic light wavelength by using wavelengthsensitiveoptical components

Joža Ana 12 September 2019 (has links)
<p>U ovoj doktorskoj disertaciji dat je predlog nove metode za merenje talasne dužine monohromatske svetlosti pomoću spektralno osetljivih optičkih komponenti. Princip rada predložene metode se zasniva na kombinovanju spektralnih osetljivosti fiber-optičke račve i dva različita fotodetektora.<br />Izvršena je implementacija i karakterizacija senzorskog sistema za merenje talasne dužine monohromatske svetlosti. U eksperimentalnoj postavci korišćena je 2&times;2 fiber-optička račva, germanijumska (Ge) fotodioda i indijum-galijum-arsenid (InGaAs) fotodioda. Postignuta je linearnost sa faktorom korelacije R2=0.99942 i merna rezolucija od 17 pm u opsegu talasnih dužina svetlosti od 1575 do 1615 nm (L-opseg). U istom opsegu, dobijena je merna greška od približno &plusmn;0.2 nm i ponovljivost od &plusmn;0.16 nm. Ispitani su uticaji promena temperature, snage optičkog izvora i šuma na karakteristike senzorskog sistema.</p> / <p>In this thesis, a new method for measurement of monohromatic light<br />wavelength by using wavelength-dependent optical components is proposed.<br />The principle of operation of the proposed method is based on combining<br />spectral sensitivities of fiber-optic coupler and two different photodetectors.<br />Sensor system for measurement of monochromatic light wavelength is<br />implemented and characterized. Experimental setup consists of 2&times;2 fiberoptic<br />coupler, germanium (Ge) photodiode and indium-gallium-arsenide<br />(InGaAs) photodiode. Excellent linearity (R2=0.99942) and measurement<br />resolution of 17 pm are achieved in measurement range 1575-1615 nm (Lband).<br />In the same measurement range, measurement error of approximately<br />&plusmn;0.2 nm and repeatibility of &plusmn;0.16 nm are obtained. The influence of<br />temperature, optical source power and noise on sensor system characteristics<br />is investigated.</p>

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