year 28, Issue 1 (1st Iranian Conference on optical fiber sensors (ICOFS 2021) 2021)                   ICOP & ICPET _ INPC _ ICOFS 2021, 28(1): 52-54 | Back to browse issues page

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Refractive index gas sensor based on fano resonance induced by air holes in the bus-waveguide of a microring resonator
Zahra Rasuli Emadi1 , Mahdi Bahadoran * 1, Gholamreza Honarasa1
1- Department of Physics, Shiraz University of Technology, 31371555, Shiraz, Fars, Iran
Abstract:   (692 Views)
Applying two cylindrical holes on the bus-waveguide that jointed to the single ring resonator brings about realizing of three different types of resonance peaks including Lorentzian, Fano and electromagnetically induced transparency (EIT). The system was used as gas sensor and the sensitivity and quality factor were determined for all three types of resonant peaks. Results simulated using finite difference time domain method. A free spectral range as wide as 99 nm was realized by the proposed layout. Amongst all types of the realized resonances, the EIT and Fano resonances have the highest quality factor of 3074 and 2535,respectively  that are higher than those of reported for the conventional single ring resonators.
Keywords: two-Air-hole ring resonator, Optical sensor, Finite difference time domain, Gas sensor
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Type of Study: Research | Subject: Special
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