Browsing by Author "Bouchemat, Mohamed"

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    Channel Drop Filter Based On Coupled Cavity In Photonic Crystals
    (Oum-El-Bouaghi University, 2014) Bendjelloul, Rahima; Bouchematand, Touraya; Bouchemat, Mohamed
    In this paper, a five channel drop filter has been designed in a two dimensional photonic crystal with high dielectric rods in air. Each channel consists of a photonic crystal coupled cavity waveguide with double cavities combined with a line defect waveguide. Desired wavelengths are selected by setting different radii of the two point defects in the photonic crystal coupled cavity waveguides. Defect rods placed at the same channel have an identical radius. The performance of the designed filter has been numerically calculated using the finite difference time domain method. In the designed structure, higher efficiencies in all channels have been achieved.
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    Magneto-optical properties of magnetic photonic crystal fiber of Cerium substituted yttrium iron garnet medium (Ce -YIG) filled with magnetic fluid Fe3O4
    (University of Oum El Bouaghi, 2021) Ghalem, Salim; Lebbal, Mohamed Redha; Bouchemat, Mohamed
    In this work, we propose a photonic crystal fiber based on magneto-photonic crystal (MPC), formed by a triangular ring of circular air holes filled with magnetic fluid (MF) based on magnetic nanoparticle Fe3O4, in a Cerium substituted yttrium iron garnet medium (Ce -YIG), in this fiber, we have theoretically studied the conversion mode, reported and studied the effect of some parameters such as the radius and using a beam propagation method (BPM) in two dimensions. In our proposed structure the maximum conversion modes ratio equal to 98% with low coupling length Lc=15μm is obtained for gyrotropy g=0.35 and Faraday Rotation FR=1900 × 104 deg ∕cm.