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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): 43-45 | Back to browse issues page

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Babakhani-Fard M, Daraei A, Ghahremani Moghadam M, Zibaii M I. Modeling of a Polarization Rotator Photonic Crystal Resonator on Insulator for Label-Free DNA Detection. ICOP & ICPET _ INPC _ ICOFS 2021; 28 (1) :43-45
URL: http://opsi.ir/article-1-2505-en.html
1- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran.
2- Dept. of Physics, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran.
3- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
Abstract:   (569 Views)
In this paper, a structure of photonic crystal resonator biosensor based upon a quad-core silicon- silicon nitride cross-beam on silica insulator with the elliptical geometry of tapered walls including periodic air grating along the entire structure is modeled. The computational results showed that the structure can be used to detect biological parameters in a wide range of frequencies by intensifying the sensing mode with a large quality factor Q≈9827.8 and confining with a very small modal volume Vmode=0.001(λres/neff)3 in the microcavity area and creating a wide bandgap of 646.5 nm. This structure is capable of detecting a very small surface area of 0.0045 μm2 from the analyzed solution of DNA molecules with very high surface and resonance Sensitivities equal to Ssur≈0.0008 RIU/nm and Sres≈340.6 nm/RIU, respectively.
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Type of Study: Research | Subject: Special

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