Teaching Documents by MD.NAZMUS SAKIB
Arduino based solar street light with auto intensity control
SOLAR ADVANCEMENT IN BANGLADESH
Book Reviews by MD.NAZMUS SAKIB
Design and Characterization of Highly Sensitive Dual Core D-shape Photonic Crystal Fiber Biosensor, 2017
In this thesis paper, I numerically demonstrate a D-shaped photonic crystal fiber (PCF) biosensor... more In this thesis paper, I numerically demonstrate a D-shaped photonic crystal fiber (PCF) biosensor based on the principle of surface plasmon resonance (SPR). The finite element method (FEM) with circular perfectly matched layer (PML) boundary condition is applied to evaluate the performance of the proposed sensor. A thin gold layer is deposited outside the PCF structure, which acts as the plasmonic material for this design. The sensing layer (analyte) is implemented in the outermost polishing layer, which permits easy and more practical fabrication process compared to analyte is put inside the air holes. It is demonstrated that, at gold layer thickness of 40 nm, the proposed sensor shows maximum sensitivity of 8000 nm/RIU using the wavelength interrogation method in the sensing range between 1.45–1.48. Besides, using an amplitude interrogation method, a maximum sensitivity of 560 RIU-1 and a maximum sensor wavelength resolution of 1.25 × 10-5 RIU and amplitude resolution 1.7857 ×10-5 RIU are obtained. We also discuss how phase matching points are varied with different fiber parameters. Owing to high sensitivity and simple design, the proposed sensor may find important applications in biochemical and biological analyte detection.
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Teaching Documents by MD.NAZMUS SAKIB
Book Reviews by MD.NAZMUS SAKIB