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Proceedings Paper

AFM investigation of sol-gel layers for optical fibre sensors
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Paper Abstract

In this paper a project of a simple optical fibre ultraviolet sensor was presented. As the main part of the sensor, the active layer containing an organic dye able to absorb ultraviolet radiation and afterwards emit radiation in a visible range underwent the detailed investigation. The Atomic Force Microscopy (AFM) images of the gel active layers clearly proved a relation between the surface structure, time of sol's hydrolysis and the compositions of the sols which differed with the molar ratio of three alkoxysilanes (TEOS- tetraethoxysilane, MTES- methyltriethoxysilane and PhTES- phenyltriethoxysilane). The experiment was being carried out during 42 days with the measurements every 7th day. Additionaly, a dependence between the structure of the examined surface (which means also a dependence of both remaining factors mentioned above) and emission's intensity of the sensor while excitated with a banknote-control UV standard lamp has been noticed. The obtained results give an obvious prove the optical properties of UV optical fibres' sensor in which a gel active layer is applied depend on many different factors, which adequately matched may result in a big sensitivity and efficiency of such a sensor.

Paper Details

Date Published: 26 April 2006
PDF: 8 pages
Proc. SPIE 6159, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments IV, 61592A (26 April 2006); doi: 10.1117/12.674823
Show Author Affiliations
Eliza Chodkowska, Maria Curie-Sklodowska Univ. (Poland)
Jan Rayss, Maria Curie-Sklodowska Univ. (Poland)


Published in SPIE Proceedings Vol. 6159:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments IV
Ryszard S. Romaniuk, Editor(s)

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