DETAILY PROJEKTU
Název: Struktury s invertovaným profilem indexu lomu v oblasti nad 1,457 pro evanescentní chemické vláknové sensory
Poskytovatel: Grantová agentura ČR
Řešitel: Dr. Ing. Ivan Kašík
Člen: Ing. Zbyněk Berka, CSc.; Ing. Daniela Berková, CSc.; Ing. Miloš Hayer, CSc.; Dr. Ing. Pavel Honzátko; Ing. Miroslav Chomát, CSc.; Ing. Gabriela Kuncová, CSc.; Ing. Vlastimil Matějec, CSc.
Od: 2002-01-01
Do: 2004-12-31
The proposed deals with special optical fibres with the inverted graded-index (IGI) refractive-index profile for evanescent-wave detection. Up to now such special fibres with refractive index lower than that of silica have been studied. However, by using these fibres it is not possible to detect refractive-index changes in the region above 1.457 what can be considered as a certain limitation. To overcome this limitation it is proposed to solve the material and technological problem of preparation of novel type of special optical fibres exhibiting as high sensitivity to the refractive-index changes as possible in the refractive-index region above 1.457 and experimental verification of the sensitivity of prepared samples. Special fibres doped with GeO2, SnO2 and TiO2 will be prepared and for the region of higher refractive indices the step-index fibres from optical glasses will be drawn. Sensitivity of the prepared sensing fibres to the refractive-index changes (absorption coefficient changes) will be verified in immersion experiments. The technological know-how as a generic methodological basis of fiber preparation process and in-natura fiber samples with verified detection properties for the refractive-index changes in the region above 1.457 will be the main result of the project. This should make possible to monitore the states and their changes of certain materials (e.g. polymers) as well as to detect number of chemical compounds or biochemicals.