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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2025-07-06 15:49 |
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Conference: Bucharest University Faculty of Physics 2025 Meeting
Section: Polymer Physics
Title:
Enhanced Photonic BandGap (PBG) Systems for Flexible Optical Applications
Authors:
Alexandru MACOVEI (1), Valentin BARNA (1), Catalin BERLIC (1), Cristina MIRON (1), Adrian BERLIC (1,2), Lucian Dragos FILIP (3)
Affiliation:
1) University of Bucharest, Faculty of Physics, 405 Atomistilor Street, 077125, Magurele, Romania
2) National Meteorological Administration, 97 Soseaua Bucuresti - Ploiesti, Bucharest, Romania
3) National Institute of Materials Physics, Bucharest-Magurele, 077125, Romania
E-mail
barnavalentin@yahoo.com
Keywords:
photonic BandGap (PBG), polymeric periodic materials, aperiodic layered configurations, optical applications
Abstract:
We present a comprehensive preliminary investigation into the simulation of potential Photonic BandGap (PBG) structures within systems comprising both periodic and aperiodic layered configurations constructed from diverse materials (including here nematic liquid crystals, polymers, air, and other dielectrics) aimed at serving as tunable, compact optical amplification units or reflective components within the visible and near-infrared (NIR-IR) spectral domains. Our research encompasses detailed simulations of various prospective periodic architectures at the micrometer scale, assembled from multilayered media exhibiting refractive indices ranging from 1.0 to 1.8. Through strategic selection of layer thicknesses and material combinations, we demonstrate the capability to engineer customizable, high-performance optical amplifiers and laser sources tailored to specific wavelength regimes, alongside highly selective bandpass and notch optical filtering functionalities. The incorporation of birefringent materials (such as liquid crystal mesophases) further facilitates active modulation and real-time fine-tuning of these PBG structures, thereby broadening their applicability and enhancing their operational versatility across disciplines including optics, photonics, and nanotechnology.
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