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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 793-796 |
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Riahi A, Vahedi M, Khalilzadeh J. Theoretical Investigation of the Effect of Absorbing Layer Thickness and Geometry Effect on the Sensitivity of Tapered-Fiber Sensors. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :793-796
URL: http://opsi.ir/article-1-1951-en.html
URL: http://opsi.ir/article-1-1951-en.html
1- Physics department, Iran University of Science and Technology
2- Optics and Laser Research Center, Imam Hossein University of Technology
2- Optics and Laser Research Center, Imam Hossein University of Technology
Abstract: (1596 Views)
In this paper, a comprehensive study was conducted to determine the optimum geometry resulting in the largest sensitivity for the tapered fiber-optic gas sensors. A staircase concatenation method was introduced to investigate the effect of geometry and the absorbing layer thickness. The sensitivity of the sensor is increased with increasing of the tapering angle and decreasing of the tapered diameter. Refractive index of the layer is an important parameter affecting the sensitivity. If refractive index of the layer is larger than refractive index of the fiber, some optimum points are observed and for the case that the refractive index of the layer is smaller than that of the fiber, the sensitivity is increased by increasing the layer thickness.
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