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year 28, Issue 1 (1st Iranian Conference on optical fiber sensors (ICOFS 2021) 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 28(1): 13-15 |
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Borjikhani P, Zibaii M I, Granpayeh N. Comparison of Tapered Optical Fiber Sensors Based on Gold, Silver, Copper and Aluminum Nanoparticles. ICOP & ICPET _ INPC _ ICOFS 2021; 28 (1) :13-15
URL: http://opsi.ir/article-1-2495-en.html
URL: http://opsi.ir/article-1-2495-en.html
Comparison of Tapered Optical Fiber Sensors Based on Gold, Silver, Copper and Aluminum Nanoparticles
1- Center of Excellence in Electromagnetics, Optical Communication Laboratory, Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran
2- Laser & Plasma Research Institute, Shahid Beheshti University, Tehran, Iran.
2- Laser & Plasma Research Institute, Shahid Beheshti University, Tehran, Iran.
Abstract: (1075 Views)
Four tapered optical fiber sensors based on the localized surface plasmon resonance (LSPR) method with Au, Ag, Cu, and Al nanoparticles on the fiber waist area are simulated and investigated. The simulation method is a combination of the finite-difference time-domain (FDTD) and finite element method (FEM). The transmittance spectrum of the tapered optical fiber by variation of analyte refractive index is obtained for these four sensors and their amplitude and wavelength sensitivities are compared. It is shown that the Au sensor has the highest amplitude sensitivity of -4.5 per refractive index unit (1/RIU) and the Ag sensor has the highest wavelength sensitivity of 174.9 (nm/RIU) among these sensors. The results show that if the environmental conditions and the possibility of design for these sensors are provided, each sensor has its own advantages for diagnosing the diseases with the analyte refractive index range of 1.333‑1.403.
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