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Abstract
Averaging and shifting the refractive index profiles of quasiperiodic structure reveals the formation of several localized modes in the reflectivity spectrum and were used to generate different spectral barcodes. By associating the depth and wavelength of the observed resonant modes to the thickness and position of blackbars, respectively, the possibility to generate multiple codes has been shown. An experimental verification was carried out with multilayered dielectric porous silicon structures with reflectivity spectra revealing unique photonic fingerprints.
Published Version
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