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Title: Metaheuristic approach enabled mode order conversion in photonic crystals: numerical design and experimental realization
Authors: Bor, Emre
Kurt, Hamza
Turduev, Mirbek
Keywords: Photonic crystals
mode order conversion
inverse design
Issue Date: 2019
Publisher: Institute of Physics Publishing
Source: Bor, E., Kurt, H., and Turduev, M. (2019). Metaheuristic approach enabled mode order conversion in photonic crystals: numerical design and experimental realization. Journal of Optics, 21(8), 085801.
Abstract: In the presented study, we proposed a design approach based on optimization algorithm to obtain mode order conversion in photonic crystal (PC) structures and experimentally verify the numerical result of the corresponding approach. The finite-difference time-domain method is integrated with an evolutionary algorithm to develop the introduced design method. Here, we designed two different mode order converter PCs with ultra-compact sizes that transform a fundamental mode to a higher order mode. The first designed structure realizes a mode order conversion in free-space host medium, and the second structure performs the same operation in a PC waveguide with optimized region. Also, asymmetric light transmission effect in PC waveguide structure is investigated. Additionally, we performed microwave experiments to confirm the numerical results of mode order conversion. In conclusion, we demonstrated a novel design approach to obtain mode order conversion, which can be feasible to design diverse photonic structures in the future applications of nanophotonics.
ISSN: 2040-8978
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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