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(Color online) Relative variation of PSi refractive index layer with as a function of layer liquid fraction for different refractive indices (a); as a function of for different layer liquid fractions.
Experimental reflectivity spectra of Bragg mirror (a, solid line) and Thue-Morse sequence (b, solid line) composed by 64 layers. In dashed line are reported the reflectivity spectra after exposure to methanol. and are the wavelength monitor for Bragg and Thue-Morse multilayer, respectively.
Calculated relative wavelength shift for BM and TMM (dashed line) as a function of layer liquid fraction after exposure of methanol .
(Color online) Experimental response curve of TMM and BM.
Chemical organic substances and its refractive index used in the sensing experiment. and are the wavelength shift and the layer liquid fraction for Thue-Morse (Bragg) structures. The reference wavelength is for TMM and for BM.
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