22 February 2012 Theoretical analysis of the modal behavior of 2D random photonic crystals
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We present the effect of structural randomness on the formation of Anderson localization (AL) in random photonic crystals (RPCs) by using a two-dimensional FDTD (Finite-Difference Time-Domain) computational method. The RPC consists of a silicon substrate with an array of air holes aligned in a triangular lattice shape. The structural randomness is introduced by randomly dislocating the positions of air holes. By investigating impulse response of the system, we obtained frequency spectra and Q-factors of long-lived modes. The modal characteristics of the modes as a function of structural randomness in RPCs and optimization of the structural randomness to achieve high photon confinement efficiency are achieved.
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Shimpei Hamada, Seiji Takeda, Pierre Viktorovitch, Minoru Obara, "Theoretical analysis of the modal behavior of 2D random photonic crystals", Proc. SPIE 8269, Photonic and Phononic Properties of Engineered Nanostructures II, 826924 (22 February 2012); doi: 10.1117/12.906960; https://doi.org/10.1117/12.906960


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