0303631 - URE-Y 20000021 RIV US eng C - Conference Paper (international conference)
Matějec, Vlastimil - Berková, Daniela - Chomát, Miroslav - Kuncová, Gabriela
Modification of the selectivity of thin porous layers coated by the sol-gel method on silica optical fibers to gases.
Bellingham: SPIE The International Society for Optical Engineering, 2000. Proceedings of SPIE, 4016. ISBN 0-8194-3641-0. ISSN 0277-786X. In: Photonics, Devices, and Systems. - (Hrabovský, M.; Tománek, P.; Miler, M.), s. 112-117
[Photonics Prague'99 /3./. Prague (CZ), 21.06.1999-23.06.1999]
R&D Projects: GA ČR GA102/98/1358
Institutional research plan: CEZ:AV0Z2067918
Keywords : optical fibres * sol-gel processing * sensitivity
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

This paper deals with modification of the sensivity and selectivity of siloxane gel layers coated on silica fibers to vapours of hydrocarbons and chlorinated hydrocarbons. This modification is based on doping the layers with TiOTi chains and/or immobilizing in them Cu-ephedrine and Cu-phthalocyanine. The fibers were excited with inclined laser beams. Both negative and positive changes of the output optical power were observed which were caused by contact of the layers with the vapours.
Permanent Link: http://hdl.handle.net/11104/0113819