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    Unidirectional light propagation photonic crystal waveguide incorporating modified defects

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    Authors
    Soltani, A.
    Ouerghi, F.
    AbdelMalek, Fathi
    Haxha, Shyqyri
    Ademgil, Huseyin
    Akowuah, Emmanuel K.
    Affiliation
    Université de Tunis El Manar
    University of Bedfordshire
    European University of Lefke
    Kwame Nkrumah University of Science and Technology
    Issue Date
    2016-11-29
    Subjects
    photonic crystal waveguides
    optical diode
    integrated optics
    
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    Abstract
    In this paper, we have proposed a design of an Optical Diode-like in two-dimensional (2D) Photonic Crystal (PC) waveguide. The proposed device consists of 2D square-lattice PC structures, and it is based on two PC waveguides with different symmetric guiding modes, where various configurations of defects, including elliptic or/and semi-circular defects have been incorporated. The proposed one-way light propagation Optical Diode has been designed and optimized by employing in-house 2D Finite Difference Time Domain (FDTD) numerical method. We have reported that the unidirectional light propagation depends strongly on the coupling region between the introduced defects and the adjacent waveguides, and it also depends on the matching and mismatching between the defects and waveguide modes. It has been shown also that owing to its tunable features, the proposed Optical Diode can be potentially applied as a building block in future complex optical integrated circuits.
    Citation
    Soltani A, Ouerghi F, AbdelMalek F, Haxha S, Ademgil H, Akowuah E (2017) 'Unidirectional light propagation photonic crystal waveguide incorporating modified defects', Optik, 130, pp.1370-1376.
    Publisher
    Elsevier GmbH
    Journal
    Optik
    URI
    http://hdl.handle.net/10547/623891
    DOI
    10.1016/j.ijleo.2016.11.179
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S0030402616315157
    Type
    Article
    Language
    en
    ISSN
    0030-4026
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.ijleo.2016.11.179
    Scopus Count
    Collections
    Computing

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