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Volume 25 - ICOP & ICPET 2019                   ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 389-392 | Back to browse issues page

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Riahi A, Dastjerdi V, Vahedi M, Khalilzadeh J, Shahamat Y. Design and Simulation of Hydrogen Gas Non-adiabatic Tapered Optical Fiber Sensor . ICOP & ICPET _ INPC _ ICOFS 2019; 25 :389-392
URL: http://opsi.ir/article-1-1892-en.html
1- Physics department, Iran University of Science and Technology, Tehran, Iran
2- Optics and Laser Research Center, Imam Hossein University of Technology, Tehran, Iran
Abstract:   (1678 Views)
In this paper, we report simulation of a gas sensor based on tapered optical fiber in the presence of different hydrogen concentrations. It is shown that by increasing the percentage of the hydrogen gas in the surrounding medium, we can see the shift of the interference pattern. The Beam Propagation Method (BPM) is used to simulate the fibers. The fiber parameters used for simulations are those of the laboratory prepared fibers. The fiber is a commercial optical fiber (with 125μm cladding and 9μm core) that is tapered to different diameters at different angles. The input wavelength is 1550 nm. Results demonstrate good agreement with experimental results. The sensitivity of the sensor increases by increasing the taper angle and reducing the taper diameter. The obtained sensitivity makes hydrogen detection below 4% easy and accurate.
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Type of Study: Research | Subject: Special

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