Browsing by Author "Benachour, Leila"

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    Modeling Of 2d Photonic Crystals Waveguides
    (Oum-El-Bouaghi University, 2018) Benachour, Leila; Hobar, Farida
    Abstract Photonic crystals are nanometric structures which are composed of periodic elements of different permittivity in two or three dimensions. The periodic variation of the refractive index prevents the propagation of electromagnetic waves of certain frequencies. This implies the existence of photonic band corresponding to the frequency band in which the radiation cannot propagate. Their guide mechanism is completely different from that existing in conventional waveguides, since it is not the total reflection due to the difference in refractive indices which ensures the guiding, but the existence of a photonic band gap. This property is based on the design and development of new components based on photonic crystals for optoelectronics applications. In this paper, the parameters of structures, and the electromagnetic field propagation analyze, are determined based on 2D photonic crystal. Several guiding structures two-dimensional photonic crystals (W1 waveguide, the photonic crystal (PhC)-based L-junction waveguide T-shaped and waveguide intersection) and their electromagnetic fields distribution are optimized, using FDTD method (Finite Difference Time Domain) method and the software RSOFT with its simulation modules BeamPROP, FullWAVE.