Browsing by Author "Abdesselam Hocini"

Now showing 1 - 4 of 4
  • Thumbnail Image
    ItemOpen Access
    Existence of high Faraday rotation and transmittance in magneto photonic crystals made by silica matrix doped with magnetic nanoparticles
    (Université de M'sila, 2019) Nassim Dermeche; Mounir Bouras; Reza Abdi-Ghaleh; Ahmed Kahlouche; Abdesselam Hocini
    This paper focuses on studying the potential of CoFe2O4-doped magnetic nanoparticles SiO2 / ZrO2 matrix to produce high-performance one-dimensional magnetophotonic crystals (MPC) and to solve the problem of integrating magneto-optical devices. Given the importance of the magneto- optical Faraday effecton most non-reciprocal optical components, we studied the influence of different 1D structures on Faraday rotations.The potential of these structures offers a wide range of applications in the field of miniaturized and integrated non-reciprocal devicessuch as isolators
  • Thumbnail Image
    ItemOpen Access
    High-Sensitive Mid-Infrared Photonic Crystal Sensor Using Slotted-Waveguide Coupled-Cavity
    (Université de M'sila, 2022) Hadjira Tayoub; Abdesselam Hocini; Ahlam Harhouz
    Abstract|In this paper, a novel high-sensitive mid-infrared photonic crystal-based slotted-waveguide coupled-cavity sensor to behave as a refractive index sensing device is proposed at a mid-infrared wavelength of 3.9 m. We determine the sensitivity of our sensor by detecting the shift in the resonance wavelength as a function of the refractive index variations in the region around the cavity. Comparison shows that mid-infrared photonic crystal-based slotted-waveguide coupled-cavity has higher sensitivity to refractive index changes than mid-infrared photonic crystal-based slotted-waveguide. The sensitivity can be improved from 938 nm/per refractive index unit (RIU) to 1161 nm/RIU within the range of n = 1{ 1.05 with an increment of 0.01 RIU in the wavelength range of 3.3651 m to 4.1198 m by creating a microcavity within the proposed structure, calculated quality factor (Q-factor) of 1:0821 107 giving a sensor gure of merit (FOM) up to 2:917 106, and a low detection limit of 3:9 10􀀀6 RIU. Furthermore, an overall sensitivity is calculated to be around S = 1343:2 nm/RIU for the case of higher refractive indices of analytes within the range of n = 1{1.2 with an increment of 0.05 RIU. The described work and the achieved results by performing 2D- nite-difference time-domain (2D-FDTD) simulations con rm the ability to realize a commercially viable miniaturized and highly sensitive mid-infrared photonic crystal- based slotted-waveguide coupled-cavity sensor.
  • Thumbnail Image
    ItemOpen Access
    Mid-Infrared Micro-Displacement Measurement with a Bidimensional Silicon Photonic Crystal
    (Université de M'sila, 2020) Tarek Zouache; Abdesselam Hocini
    In this work, a micro displacement sensor based on dual micro-cavities coupled to a photonic crystal waveguide is proposed. The defects are introduced to create a sharp resonance in the structure which makes it useful for detecting micro displacement changes. The sensing principle is based on the change of the output signal transmission with the change of the displacement of a moving part compared to a fixed part of sensor structure. The proposed structure reached a good sensitivity of 9.52a−1
  • Thumbnail Image
    ItemOpen Access
    Photonic Crystal Based Bio-Sensor Detection in Nanophotonic Structure Using FEM Method
    (Université de M'sila, 2019) Mehdi Ghoumazi; Abdesselam Hocini
    Background & Objective: In this article, a nano-cell coupled 2D photonic crystal waveguide bio- detection platform is proposed for the detection of organic liquids such as water, ethanol, glycerol, benzene and bromine for different refractive indices (n). The detection characteristics are analyzed and obtained for the band diagram, before and after change of radius (r) as well as after the injection of liquids into the heart of the nanostructure cell at the resonant wavelength (λ res). Also, we extracted variations from the power flow norm (P) to the resonance and the transmission (T) for each material. This nanostructure for different (n) materials used, gives (P) at different levels to the resonance. This explains the importance of the refractive index parameter (n) which plays a crucial role in the detection of materials.