Browsing by Author "Hocini, Abdesselam"

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    A new design of high-sensitive photonic crystal biosensor based on ring-shape holes for detecting glucose concentration
    (University of Oum El Bouaghi, 2021) Daas, Assia; Mouetsi, Souheil; Hocini, Abderraouf; Hocini, Abdesselam; Lariouri, Fateh
    In this work an optical sensors has been designed and studied with different parameters to select the best result of Q factor and sensitivity; for that, we choose a 2D photonic crystal (PhC). The refractive index (RI) sensor is formed by a pointdefect resonant cavity in the quasi-sandwiched waveguide with a hexagonal lattice of air holes. The properties of the sensor are simulated using a couple of two methods finite-difference timedomain method (FDTD) and the plane wave method (PWE). The calculation results show that a change in ambient RI is apparent; the sensitivity of the sensor is achieved. The objective of our research was primarily modeling and optimization geometry of a first coupling path between a waveguide and a ring resonator with base of photonic crystals in order to improve the coupling properties in this structure. It is in this context that we have exploited all the parameters already developed for improve the biodetection properties in a photonic crystal-based structure. The role of our design is to sens small RI changes for detecting glucose concentration using resonant microcavity (RMC).
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    NOVEL DESIGN OF PHOTONIC CRYSTAL STRUCTURE BASED ON A COUPLED MICROCAVITYWAVEGUIDES FOR ALL-OPTICAL AND LOGIC GATES
    (University of Oum El Bouaghi, 2021) Derdour, Roumaissa; Lebbal, Mohamed Redha; Mouetsi, Souheil; Hocini, Abdesselam; Sadoun, Boumediene
    In this study, the transmission of the all-optical AND logic gate using a structure connected with a triangular photonic crystal lattice is improved. The proposed logic gate consists of a photonic crystal nano-resonator formed by changing the size of the air holes. In addition to the simplicity, the response time is very short and the designed nano-resonator increases the bit rate of the logic gate. The twodimensional finite difference time domain (2DFDTD) method is used to simulate the structure, the transmission obtained is about 98% with very negligible losses. The proposed photonic crystal AND logic gate are widely used in future integrated optical microelectronics.
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    Structure of the proposed RI biosensor (sensor with two functions)
    (University of Oum El Bouaghi, 2021) Hocini, Abderraouf; Daas, Assia; Hocini, Abdesselam
    Photonic sensors, in light of proposed structures comprised of rhombus– molded gaps matched with two waveguides, have been developed as another enthusiasm for specialists in science and technology. In this paper, it has been demonstrated that by utilizing the rhombus–formed openings examination, they got outcomes which are brilliant inside the depression locale. Consequently, the quality factor (Q) and the affectability (S) can be essentially improved for the proposed structure. This investigation are performed by reproduction utilizing limited contrast time area (FDTD). Different affectability are acquired as 565.38 nm/RIU and quality factor as high as 2.61×105have been accomplished, deducing in a location breaking points 1.03×10-6. This blend angle gives the proposed structure an extra exhibition as a component to play out a name free biosensing for the biomedical visualization.