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12 May 2014 Active structural waveguide for sensing application
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Proceedings Volume 9228, Optical Fibers and Their Applications 2014; 92280V (2014)
Event: 15th Conference on Optical Fibers and Their Applications, 2014, Lipowy Most, Poland
In the article a microstructural active optical fiber for sensing application was presented. Construction consists of three hexagonal rings and a core made of SiO2 - Al2O3 - Sb2O3 glass co-doped with 1Yb2O3/0.1Tm2O3 [mol%]. Developed optical fiber is characterized by upconversion luminescence (λp=980nm) at 480nm (Tm3+: 1G43H6) and 650 nm (Tm3+ : 1G43F4). Population of thulium levels was attained in result of the Yb 3+→Tm3+ upconversion energy transfer. Sensing application of elaborated active photonic structure was presented on the example of aqueous fluorescein solution. Fabricated microstructural optical fiber enables to measure of the fluorescein solutions with the concentration of (0.25 - 5.42)·10-4 [mol%]. Sensitivity of the elaborated measurement setup is 1.51·104 [1/mol%].
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Karol Czajkowski, Marcin Kochanowicz, Jacek Zmojda, Piotr Miluski, and Dominik Dorosz "Active structural waveguide for sensing application", Proc. SPIE 9228, Optical Fibers and Their Applications 2014, 92280V (12 May 2014);

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